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High Pressure Flow Meters for Liquids-Steam-Gas

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Are high pressure flow meters the same as regular flow meters? Can high pressure flow meters be replaced by ordinary flow meters?
Of course not.

You need to measure the flow of fluids under high pressure, but you’re not sure which type of flow meter is best for your application.

Choosing the right flow meter can be difficult, because there are so many different types available on the market. How do you know which one is right for your specific application?

Sino-Inst offers a wide range of high pressure flow meters that are specifically designed to operate in demanding applications. Our high pressure flowmeters are made from stainless steel construction and are ideal when measuring the flow of fluids under high pressures.

High Pressure Flow Meters
RFQ Flowmeters

If you’re not sure which high pressure flow meter is right for your application, please contact us and we will be happy to help you select the best model for your needs.

High Pressure Flow Meters Types

There are various types of high pressure flow meters available on the market including: positive displacement, turbine, magnetic, gear, coriolis mass flow meters. Each type of meter has its own advantages and disadvantages that should be considered when selecting a high pressure flow meter for a particular application. Read more about: Flow Meter Selection Guide

High pressure turbine flow meter is one of the most popular types of high pressure flow meters due to its high accuracy and repeatability. It is also relatively easy to install and maintain. High pressure turbine flow meters work by measuring the rotation of a turbine blade that is caused by the flow of fluid passing through the meter. It is the best choice for flow measurement of various high-pressure liquids and oils.

The housing is made of stainless steel. The meter has a simple structure and optimized structural design. High-pressure butt-weld flange clamping or high-pressure threaded connection structure is used.

  • High pressure structure design, up to 40MPa.
  • Advanced micro-power high-tech, low power consumption.
  • new sensors, low initial flow and low pressure loss.
  • High accuracy with good overlap
  • multiple output modes for easy system integration.

Main applications.
Chemical high-pressure pipeline, hydraulic oil, circulating oil, oil stations, construction machinery and other high-pressure occasion liquid.

The main disadvantage of high pressure turbine flow meters is that they are not suitable for applications where the fluid contains solids or particles, as these can damage the meter.

Extended reading: How To Install The Pressure Sensor When Measuring The Flow Pipeline?

High-pressure electromagnetic flowmeter is used to measure the flow of conductive fluids in mining energy, steel, petroleum, chemical, electric power, industry, water conservancy, and other sectors. Can also measure acid, alkali, salt and other corrosive conductive liquids.

  • Measurement medium: water, acid, alkali, seawater and other strong corrosion or impurities containing conductive liquids.
  • Medium conductivity: ≥ 20uS/cm;
  • Nominal diameter: DN6-DN3000mm;
  • Lining material: polychloroprene, polytetrafluoroethylene, silicone fluorine rubber, polyurethane rubber, F46, PFA;
  • Electrode material: key-containing stainless steel, Hastelloy B, Hastelloy C, titanium, aluminum, platinum-y alloy, tungsten carbide.
  • Nominal pressure: 0.6MPa-42MPa;
  • Precision grade: 0.2, 0.5, 1.0 grade.
  • Flow rate range: 0.1m/s-15m/s;
  • Ambient temperature: sensor -25℃~+60℃; converter -10℃~+60℃.
  • Relative temperature: 5%-95%

Key Advantages:

Accurate and repeatable measurements;

No moving parts means low maintenance costs;

Can handle high pressures and high temperatures;

Key Disadvantages:

Requires a minimum conductivity of the fluid being measured;

Susceptible to interference from external magnetic fields;

Extended reading: Pressure Sensor Applications In Various Industries

The gear flow meter is a type of volumetric flow meter.
It is made of stainless steel and can be customized with 40MPa high pressure.
The high pressure gear flow meter is especially suitable for low flow measurement.

Features:

  • High pressure resistance (1.0-40MPa)
  • High and low temperature resistance (-196℃-200℃)
  • Can measure various viscous media
  • High precision and high repeatability
  • Pulse output/analog output optional
  • Wide range ratio (1:100)
  • Wide measuring range
  • High corrosion and stain resistance (acid and alkali)

Applications:

  • Resin, glue measurement
  • Ink, asphalt measurement
  • Fuel oil measurement
  • Hydraulic oil, lubricating oil, grease measurement
  • Liquid nitrogen, freezing liquid, solvent measurement
  • Edible oil, fish oil and food filling measurement
  • Chemical and anti-corrosion requirement fluid measurement
  • Fluid dosing control system

Extended Reading: Rotameter vs Flow meter

A high pressure orifice plate flowmeter is a device used to measure the flow of fluids through a pipe. It consists of a plate with an opening in the middle, through which the fluid flows. The plate is placed in the path of the fluid stream and the pressure drop across the plate is measured. This pressure drop is then used to calculate the flow rate. High pressure orifice plates are used in applications where the fluid being measured is under high pressure, such as in steam, oil and gas pipelines.

  • Applicable measured media is very wide, can be used for almost all gases, steam and liquid flow measurement.
  • Use pressure up to 32MPa, also can be used for negative pressure.
  • Medium temperature range: -30°C to +650°C.

Extended Reading: Fluid pressure sensor

Bar type flowmeter will be inserted into the center of the pipe probe, the total pressure hole on the direction of the incoming fluid flow. Static pressure hole to the direction of the fluid to flow. The difference between the total pressure and static pressure is the measured differential pressure in the center of the pipe. Then the standard differential pressure at that point is fitted by the wind tunnel calibration curve of the probe.

It is mainly used in high temperature and high pressure high flow rate or ultra-high temperature and ultra-high pressure steam flow meter. It is made of high temperature resistant and impulse corrosion resistant 1Cr18Ni9Ti material.

The complete metal chamber structure is adopted to ensure the strength and steel. So that no damage to the mechanism will occur under the washout of high-speed airflow.

Matching temperature and pressure sensors are used to compensate for the temperature and pressure of the measured medium to ensure measurement accuracy.

  • High temperature and pressure resistance: the primary element intelligent probe material selection 1Cr18Ni9Ti stainless steel ( according to different media selection of special steel ).
  • Can withstand the maximum temperature of 650 ℃, the highest medium pressure 32MPa.

Mass flow meters are based on the Coriolis principle. The flow tube through which the medium flows vibrates, thus triggering the Coriolis effect. The sensor detects and analyzes the change in frequency, phase difference and amplitude of the flow tube. The mass flow rate and density of the fluid are calculated.

The high pressure coriolis mass flow meter is pressure resistant to 24 MPa. The type of process connection as well as the ambient and process medium temperature may reduce this rating.

Choose The Right Digital Flow Meters Types

Read more about: Condensate Flow Meter-Steam Condensate Flow Meter|Types & Selection Guide

Featured High Pressure Flow Meters for Sale

Magnetic High Pressure Flow Meter
Magnetic Large Dia. Pipe Flow Meter
Liquid Turbine Flow Meter

Low temperature Turbine Flowmeter

Gear flow meter for Micro flow

U-Series Liquid Mass Flow Meter

Orifice Plate Flow Meter
Welding Orifice Plate
Venturi Flow Meter
Wedge Flow Meter
 Annubar Flow Meter
Target Flow Meter

High pressure flow meters Applications

High pressure flow meters are recommended based on the application. High pressure gas, High pressure water, High pressure liquid, High pressure steam or High pressure air. High pressure oxygen is also a common application. Read more Turbine Flow Meter Application Case: Demineralized Water.

Some common applications for high pressure flow meters include:

  • – High pressure gas flow measurement
  • – High pressure water flow measurement
  • – High pressure hydraulic flow measurement
  • – High pressure steam flow measurement
  • – High pressure air flow measurement
  • – High pressure oxygen flow measurement

Read more about: High Pressure Hydraulic Flow Meter

When selecting a high pressure flow meter, it is important to consider the nature of the fluid being measured, the operating conditions and the required degree of accuracy. Each type of high pressure flow meter has its own advantages and disadvantages that should be considered in order to select the best meter for the application.

Read More about: What is the difference between rotameter and flowmeter?

More Related Flow Measurement Solutions

Crude Oil Flow Meter

Crude Oil Flow Meter refers to a type of flow meter that can accurately monitor and measure the flow of crude oil…

LORA Water Meter

LORA Water Meter is a commonly used wireless water meter/wireless flowmeter. The wireless remote water meter measures the water flow in the…

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What is mechanical oil flow meter? Mechanical oil flow meter refers to a flowmeter that can detect the volume flow of oil…

Clamp on Water Flow Meter

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Guide for Digital Fuel Flow Meter

Digital Fuel Flow Meter is a flow meter dedicated to measuring fuel, diesel, gasoline, and petroleum. Digital Fuel Flow Meter generally has…

Extended Reading: Special Magnetic Flowmeter Installation situation

Sino-Inst is a manufacturer of High Pressure Flow Meters for Liquids-Steam-Gas. We offer more than 20 types of High Pressure Flow Meters, 40% for gas, 30% for liquid and the rest for steam. High Pressure Flow Meters include turbine, coriolis mass, and more DP flow meters.

High Pressure Flow Meter is mainly used for small and medium diameter flow measurement. It can measure liquid, gas, steam, etc. Complete product series specifications, in all walks of life are widely used.

High Pressure Flow Meters can be stable flow measurement without modifying the pipeline. This greatly meets the measurement needs of many applications. From small tubes to large tubes can be used.

Sino-Inst’s High Pressure Flow Meters, made in China, have good quality, with better prices. Our flow measuring instruments are widely used in China, India, Pakistan, USA and other countries.

Sino-Inst’s entire team is well trained, so we can ensure that each customer’s needs are met. If you need any help with your product requirements, whether it is a High Pressure Flow Meter, level sensors, or other equipment, please give us a call.

Request a Quote

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Case Study: Automatic Sludge Blanket Level Detector

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Sludge Blanket Level Detectors use ultrasonic technology, so they are also known as ultrasonic mud level meters.

Ultrasonic Sludge Blanket Level Detector uses ultrasonic emission with echo analysis of solids suspended in water. The height and thickness of the sludge layer can be accurately measured. Effective grasp of sludge settling characteristics. The control of sludge return flow rate.

Ultrasonic sludge interface meter/mud level meter supports various variable outputs. Such as 4-20mA variable output, relay high and low alarm control output, and RS485 communication output.

Automatic monitoring and control of sludge level can be achieved by setting the Ultrasonic Sludge level sensor.

RFQ Level Sensors

What is sludge blanket level?

Sludge (sludge) is a solid settling material produced by water and wastewater treatment processes. The sludge blanket level is the interface between the settled sludge and the turbid or clear water phase above. The sludge level can be the distance from the water surface (sludge level depth) or the distance from the bottom of the tank (sludge level height).

Ultrasonic Sludge Interface Meter /
Sludge Level Meter

Due to the highly variable nature of all types of sludge, classification is essential, and its treatment and disposal are different. According to its origin, it can be classified as

  • Municipal sludge (civil sludge, also called drainage cement sewage sludge,). It mainly refers to sludge from sewage plants, which is the largest category of sludge in terms of quantity. In addition, sludge from waterworks can also be included in this category.
  • Pipe network sludge, sludge from drainage collection systems.
  • River and lake sludge, sludge from rivers and lakes.
  • Industrial sludge, from a mixture of solids and water, oil, chemical pollution, and organic matter produced by various industrial production.

In (waste) water treatment and process control, sludge water level is an important parameter. Especially in the process of phase separation, accurate sludge level information is crucial. Automatic Sludge Blanket Level Detector can be installed in clear, turbid or even heavily contaminated media with high concentration of suspended matter.

The treatment of many wastewater effluents requires the separation of solids and liquids by sedimentation. The sedimentation process is usually done in a settling tank or a special thickening tank. A sludge interface meter is used to monitor the sludge level in the tank and control the discharge cycle of the settling tank or thickening tank. When the sludge interface meter detects that the sludge has reached the design level, it can control the sludge discharge pump for sludge discharge.

Technical Parameter

CategoryBasic parameters
FunctionSplit type ultrasonic mud level meter
Range5m, 10m, 15m, 20m, 30m, 40m, 50m, 60m, 70m
Measurement Accuracy1%-2%
Resolution5mm or 0.5%
DisplayLCD display
Analog Output4~20mA/7500 load
Relay OutputSingle channel for 2 groups of AC250V/8A or DC30V/5A status programmable
Power supplyStandard 220VAC+15%50Hz optional 24VDC120mA custom 12VDC or battery power
Ambient TemperatureDisplay meter (transmitter) -20~+60℃, probe (sensor) -20~+80℃
CommunicationOptional 485,232 communication (factory protocol)
Protection levelDisplay meter IP65,Probe IP68
Probe CableUp to 100m, 10m standard
Probe installationAccording to the range and probe selection
Product power consumptionWith 24V power supply, the power consumption without relay is 100mA, with a relay is to 120mA,
2 way relay 145mA, 3 way relay to 170mA, 4 way relay to 190mA.
Specific power as follows.
No relay is 24 × 100mA = 2.4W;
1 way relay is 24×120mA=2.9W;
2-way relay is 24×145mA=3.5W;
3-way relay is 24×170mA=4.1W;
2-way relay is 24×190mA=4.6W;

portable sludge blanket level detector, is specially designed for sedimentation tank sludge interface measurement and instrumentation. The meter adopts the innovative multi-beam mutual compensation technology to measure the concentration of suspended matter. A high precision pressure sensor is also used to measure the water depth. It can simultaneously measure and display the suspended matter concentration and water depth at the sensor location.

The operator can easily determine the distribution of the sludge interface in the settling tank based on the sludge concentration value and the water depth. It is especially suitable for the inspection and measurement of sludge concentration and interface of sedimentation tanks in wastewater treatment plants and feedwater treatment plants.

The instrument is ergonomically designed, easy to carry and easy to operate. The rechargeable battery power supply can automatically record the measurement data, which is very convenient for the operator.

Technical Parameter

Measurement range.Concentration 0~50000mg/l, water depth 0~10m
Resolution.Concentration 1mg/l, water depth 0.01m
Accuracy.Concentration ±1%FS, water depth ±0.5%FS
Calibration.Factory calibration, field calibration available
Display.LCD display of date and time, measured value, historical trend line, etc.
Digital interface.USB
Data storage. 64M Flash
Operation settings: Completed via transmitter keypad
Power supply method.Battery powered with charger
Battery life.Each charge can measure about 1000 minutes, with power indication
Size.228×117×86, Φ45×130
Material.Controller PC, sensor stainless steel
Transmitter weight.0.5Kg
Sensor weight.0.5Kg
Sensor Cable.Shielded cable 10m, (other lengths can be specified in the order)
Operating Temperature. Controller -10～55℃, sensor 0～60℃
Relative Humidity.0～100%
Operating pressure.7.5Bar

Extended Reading: How many types of level transmitters are there?

Sludge Blanket Level Detector Appliactions

  • Waste treatment clarifiers.
  • Primary sedimentation tanks, secondary sedimentation tanks, gravity sedimentation tanks.
  • Petroleum/asphalt separation tanks.
  • Paper pulp tanks.
  • Beverage water clarifiers.
  • Mining clarifiers.
  • Brine tanks.
  • Slurry tanks.
  • Any vessel in which a liquid/solid two-phase interface exists.

Extended reading: cryogenic fuel level indicator

Sludge Blanket Level Measurement Cases

Project Background

  1. a combined double chamber (aeration/sedimentation tank) tank.
  2. diameter of the combined tank 10m.
  3. a depth of 3,200mm.
  4. There is no available communication line nearby.

Measurement requirements

  1. measurement and control of the sludge layer height in the secondary sedimentation tank.
  2. automatic control of the sludge level directly through the transmitter.
  3. Wireless transmission of the analog output signal to the control system.

Solution

  1. using a sludge interface meter.
  2. the transmitter activates the sludge discharge step when the sludge exceeds 160 cm or falls below 120 cm
  3. installation on the existing scraper beam.
  4. the measurement data is transmitted via a separate radio line because there are no redundant communication lines.

Advantages

  1. Simple and fast installation without welding.
  2. analog signals can be transmitted to the process control system via a radio connection.

Application scenarios

1、DN 15,000mm sludge pre-thickening tank.
2、Depth 9,500mm.
3、Volume about 1,500 m.

Measurement tasks

Replacement of a faulty existing sludge interface meter, which cannot change the existing structure.
Suspension of the new sensor over the existing top opening and insertion of the sensor into the medium to be measured.
Conversion of the sludge interface height to a 4-20 mA signal via the existing wiring to the existing control system.

Solution

  1. use of a sludge interface meter.
  2. Install the transmitter in the pre-thickener and suspend the sensor in the medium via a chain from the existing top opening.

Advantages

  1. easy and fast retrofit without structural changes.
  2. Explosion-proof and waterproof.

Project Background

  1. multiple secondary sedimentation tanks in a wastewater treatment plant.
  2. Size of Ø18m.

Measurement tasks

  1. measurement of the sludge interface height in the secondary sedimentation tanks.
  2. feedback control of sludge discharge and water intake.
  3. Provide 4-20mA signal for SCADA system.

Solution

  1. selection of sludge interface meter for sludge interface measurement.
  2. sensor: VT sensor.
  3. Settled sludge below the threshold (yellow) will not be accepted, so that the sludge deposition at the bottom can be well evaluated. Advantages
  4. easy to install.
  5. simple maintenance.
  6. High measurement accuracy.

The thickener generally separates the solid from the liquid, and below is the settled slurry. The thickness of these well settled slurry is measured with a sludge interface meter.

These settled slurries are available for secondary use. So it is necessary to remind the operator to discharge the slurry after reaching a certain height. Such working conditions are very suitable for sludge interface meter application.

Extended reading: Oil-water interface measurement-Magtech magnetic level indicator

Extended reading: How to Choose the Right Diesel Fuel Level Sensor?

More Featured Ultrasonic Level Meters

Portable Ultrasonic Water Depth Gauge
ULT-200 Ultrasonic Level Detector
ULT-100 Explosion-proof Ultrasonic Level Indicator
Portable Ultrasonic Liquid Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Frequently
Asked
Questions

Help Center

Ultrasonic sludge interface meter is using the reliable ultrasonic echo detection principle to calculate the ultrasonic wave return to the probe The height and thickness of the sludge layer can be calculated by calculating the time of the ultrasonic wave returning to the probe. Effectively grasp the sludge sedimentation characteristics and The ultrasonic mud-water interface meter uses the principle of reliable ultrasonic echo detection to calculate the height and thickness of the sludge layer.

More about: The Difference Between Ultrasonic Depth Sensor And Ultrasonic Level Sensor

The Automatic Sludge Blanket Level Detector supports local display. It also supports variable outputs such as 4-20mA variable output, relay high and low alarm control output and RS485 communication output.

Extended Reading: Low Cost Float Level Sensor for Tank Liquid Volume Monitoring

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Sino-Inst is Manufacturer of Automatic Sludge Blanket Level Detector. We supply more than 20 kinds of Ultrasonic Level Sensors. 40% ultrasonic level meters, 40% External Ultrasonic Liquid Level Meters and 20% Automatic Sludge Blanket Level Detectors.

Automatic Sludge Blanket Level Detector reference wholesale price USD 755.00/set

Automatic Sludge Blanket Level Detector is commonly used for sludge interface measurement in primary and secondary settling tanks, sludge thickening tanks in wastewater treatment. And sedimentation tank level measurement in water treatment plants.

It is also widely used in industries that require solid-liquid separation in production processes such as paper, mining, power, and petroleum. Monitoring the height of solids in the sedimentation process. For example, oil/asphalt separation tank, paper pulp tank, power mortar sedimentation tank, mining clarification tank, etc.

Automatic Sludge Blanket Level Detectors enable stable level measurement without tank modifications. This greatly meets the measurement needs of many applications. Can be used from small to large tanks.

Sino-Inst’s Automatic Sludge Blanket Level Detectors, made in China, Having good Quality, With better price. Our level measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Automatic Sludge Blanket Level Detector, flow sensor, or other device, give us a call.

Request a Quote

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What Is Metal Tube Flow Meter? Rotameter Manufacturer

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What is Metal Tube Flow Meter?

LZ series metal tube flow meter, also known as metal rotor flowmeter. Metal tube flow meter consists of a measuring tube and side indicator, the field indicator can also be retrofitted with an electric device, suitable for liquid gas, and steam measurement. Stable flow measurement is also possible at high pressures and extreme temperatures.

Metal tube flow meter units are available in a variety of tube sizes and configurations. Metal tube units are available from DN 15 to DN 200.

RFQ
Flowmeters

Metal Tube Flow Meter Features

  • All metal construction, strong and stable.
  • Short strokec compact structure.
  • Low pressure loss design.
  • New style magnetic coupling structure ensures that the signal transmission is more stable.
  • Magnetic filter can be added as customer requirements.
  • Thermal insulation or tracing heat jacket.
  • Used in the gas and liquid measurement in all industries. The measurment parts can adopt different materials to be suitable for different medias.
  • Suitable for harsh environment and seriously corrosion media. Having good heat resistance and pressure resistance.
  • Intelligent dual-line LCD display,on site instant/cumulative flow display and back light as options.
  • Two-wire systemc batteryc alternating current can be choosed to supply the power.
  • With data recoveryc data backup and powerfail protection functions.

Read More about: Digital Rotameter

Metal Tube Flow Meter Benefits

  1. Metal tube rotameter gives full play to its advantages in small diameter, low flow rate of the medium flow measurement.
  2. Simple structure, reliable operation, wide range of applications, accurate measurement, easy installation. The product is widely used in chemical, food, pharmaceutical and other industries.
  3. Rotameter flowmeter has ordinary type and anti-corrosion type. The above two types are further divided into field indication type and electric remote transmission type.
  4. If the measured medium is easy to crystallize or freeze. Can also use metal rotor flowmeter with steam tracing.
  5. If the measured medium contains magnetic objects. Can be installed at the entrance of the flowmeter magnetic filter. Its material is the same as the corresponding flowmeter material.
  6. The overall structure of the metal tube rotameter is made of metal. So it is more sturdy, not easy to be damaged by external factors. It can withstand high temperature of 400℃, and has the characteristics of explosion-proof and anti-corrosion.
  7. Used for gas and liquid measurement in various industries, the measuring part can be made of different materials to adapt to different media conditions.

Extended Reading: What is difference between rotameter and flow meter

Metal Tube Flow Meter-Variable Area Flow Meters Principle

A Metal Tube Flow Meter is a variable area flow meter. It consists of measuring tube, float, indicator, process connection, and so on.

Rotameter flow meter working principle

When the measured fluid passes through the annulus formed by the cone and floats from the bottom to top.

The differential pressure produced at the upper and lower ends of the float forms the force for the float to rise.

When the rise of the float is greater than the weight of the float immersed in the fluid. The float rises.

The annulus area increases accordingly. The fluid velocity in the annulus drops immediately.

The differential pressure at the upper and lower ends of the float is reduced. The lifting force acting on the float also decreases.

Until the rising force equals the weight of the float immersed in the fluid, the float will stabilize at a certain height.

The height of the float in the tapered tube and the flow rate through it correspond to each other.

Extended reading: Beginner’s Guide: Variable area flow meter

Metal Tube Flow Meter Applications

Metal tube rotor flowmeter Mainly applicable to.

  • Suitable for small diameter low flow rate gas, liquid and steam flow measurement.
  • Magnetic coupling principle no leakage resistant to high pressure.
  • High temperature resistance, up to 450 ℃.
  • Subject to certain viscosity, not suitable for measuring high viscosity media.
  • When the flow rate exceeds 100m3 / h water flow, the pressure loss is large.
  • Mostly used for process control instrumentation, accuracy 1%, generally 1.5%, range ratio 10:1.
  • Intrinsically safe explosion-proof and explosion-proof type are all available, suitable for dangerous occasions.
  • Pointer type, battery type, two-wire type, 220V AC power supply and other forms are available.　
  • Suitable installation method is vertical installation of the lower inlet and upper outlet.
  • Measuring high temperature and low temperature (-30 ℃ below) media, the use of jacket type
  • Not suitable for measuring pulsating media flow (such as metering pump outlet).
  • For the gas this table without temperature and pressure compensation, need to be considered separately.
  • For more than one meter intensive installation or carbon steel process pipeline passing near the meter, to maintain a distance of more than 100mm from the meter to avoid magnetic interference.
  • For containing a large number of ferromagnetic particles media flow measurement, to be installed in front of the instrument magnetic filter, and regular purging.
  • Metal pipe rotameter for the occasion of straight pipe section requirements are not high, generally for the first 5D after 250mm can be.

Extended reading: Crude Oil Measurement – Radar Level Meter Measuring Vaulted Buffer Tank

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Frequently
Asked
Questions

Help Center

Steam can be measured using a metal pipe rotameter. Steam temperatures are above 200 degrees Celsius, and metal pipe rotameter can measure media up to 400 degrees Celsius.

The main measuring element of the glass tube rotameter is a vertically mounted conical glass tube and a float that can move up and down inside.

When the fluid from the bottom up through the conical glass tube, in the float between the upper and lower pressure difference, the float in this differential pressure under the action of rising. When the rising force, the buoyancy force and viscous force on the float is equal to the gravity of the float, the float is in equilibrium position.

Therefore, the flow of fluid through the glass rotameter and the float rise height. That is, there is a certain proportional relationship between the flow area and the glass rotor flowmeter. The float position height can be used as a measure of flow.

The flow detection element of the rotameter is composed of a vertical tapered tube that expands from bottom to top and a float group that moves up and down along the axis of the tapered tube. Below, I will give you a specific introduction to the classification of rotameters.

Glass rotameter:

Glass rotameters are mainly used in various departments such as the chemical industry, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dyes, environmental protection, and scientific research. Used to measure the flow of single-phase non-pulsating (liquid or gas) fluids. The anti-corrosion glass rotor flowmeter is mainly used for the detection of corrosive liquid and gas medium flow. Such as strong acid, strong acid, oxidant, strong oxidizing acid, organic solvent, and other corrosive gas or liquid medium flow detection.

Extended reading: Gas Rotameter Tips

Plastic tube rotameter:

The main parts such as the liquid plastic tube rotameter cone tube are made of AS, ABS plastic. Has relatively good corrosion resistance. The product also has the characteristics of reasonable structure, small size, lightweight, and the tapered tube is not easily broken. The plastic tube rotor flowmeter can be widely used in chemical, environmental protection, food, and other industrial sectors.

Plexiglass rotameter:

Plexiglass rotameter is divided into panel type plexiglass rotameter and pipeline type plexiglass rotameter.

Plexiglass rotameter also has the characteristics of high transparency, intuitive reading, not easy to break, lightweight, long life, and convenient installation and connection. However, the tapered glass tube of plexiglass cannot be used for organic solvents (such as trichloroethylene, dichloroethane).

Metal tube rotameter:

Metal tube rotameter is divided into on-site pointer indication type and remote transmission type.

Metal float flowmeter is a kind of flow measuring instrument commonly used in industrial automation process control. It has the characteristics of small pressure loss, large detection range (range ratio 10:1), and convenient use. It can be used to measure the flow of liquid, gas, and steam. It is especially suitable for medium flow measurement with low flow velocity and small flow.

Extended reading: Vortex Steam Flow Meter

The metal float flowmeter has a local display type and an intelligent remote transmission type. With pointer display. Instantaneous flow, cumulative flow, liquid crystal display. Upper and lower limit alarm output. Cumulative pulse output, standard two-wire 4-20mA current output, and other forms. Provide users with a very wide choice of space. In addition, the instrument uses a high-quality MCU micro-processing system. Ensure the excellent performance of the flowmeter in various applications.

Extended reading: Beginner’s Guide: Variable area flow meter

Float (rotor) flowmeter, also known as rotameter, is mainly used for small and medium diameter flow measurement. Can measure liquid, gas, steam, etc.. Product series specifications are complete, in all walks of life are widely used.

If the flowmeter is divided into 5 categories. Then the five commonly used flowmeters are:

  1. Electromagnetic flowmeter
  2. Differential pressure flowmeter
  3. Turbine flowmeter
  4. Ultrasonic flowmeter
  5. Volumetric flowmeter (PD)

If you want to divide the flow meter into three categories. I think it can be divided into volumetric flowmeters, mass flowmeters, and velocity flowmeters.

Sino-Inst is a manufacturer of metal tube flow meters. We offer more than 20 types of metal tube flow meters, 40% for gas, 30% for liquid and the rest for steam.

Metal Tube Flow Meter is mainly used for small and medium diameter flow measurement. It can measure liquid, gas, steam, etc. Complete product series specifications, in all walks of life are widely used.

Metal Tube Flow Meters can be stable flow measurement without modifying the pipeline. This greatly meets the measurement needs of many applications. From small tubes to large tubes can be used.

Sino-Inst’s Metal Tube Flow Meters, made in China, have good quality, with better prices. Our flow measuring instruments are widely used in China, India, Pakistan, USA and other countries.

Sino-Inst’s entire team is well trained, so we can ensure that each customer’s needs are met. If you need any help with your product requirements, whether it is a metal tube flow meters, level sensors, or other equipment, please give us a call.

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Fuel Tank Diesel Level Sensors

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Diesel Level Sensors are used in Fuel Tank\Oil Depot. By accurately measuring the level data of the oil tank, it can effectively manage the inflow, sale and storage of oil in the oil depot. The selection of Level Sensors for diesel and gasoline tanks should be determined according to the design results of the oil tank. Different structures choose different liquid level instruments.

Diesel tanks, gasoline tanks can choose to invest in Level Sensors, radar level gauge. The radar level gauge has high precision, but the price is slightly higher than that of the magnetic flap level gauge and the float level gauge. It can carry 4-20ma long-distance transmission. Sino-Inst Fuel Tank Diesel Level Sensors has obtained the national heat certificate of intrinsic safety explosion-proof certificate and isolation explosion-proof certificate, so you can buy it with confidence.

RFQ Level Sensors

Featured Diesel Level Sensors

Pressure Guided Submersible Level Transmitter

SI-LT Magnetostrictive level transmitter with Local Digital Display
SI-U01 Float Level Sensor
SMT3151TR Submersible Level Transmitter–2Mpa,200m
RF Capacitance Level Transmitter
SIRD90 Radar Level Transmitters, Non-Contact
SI-302 Anti-corrosive Submersible Level Transmitter
ULT-100 Explosion-proof Ultrasonic Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
SIRD70 Guided Wave Radar (GWR) Level Transmitters
Alternative to VEGAPULS 64-80GHz FMCW Level Radar
Differential pressure(DP) level transmitter

Types of Fuel-Diesel Level Sensors

Below are some of the most commonly used diesel level sensors that we have compiled.

Generally speaking, the storage of diesel oil is in custom-made storage tanks. At this time, a magnetic flap liquid level indicator will be added outside the storage tank to measure the remaining amount of diesel in the tank.

When the level of diesel in the storage tank rises and falls, the magnetic float in the body tube of the level gauge also rises and falls. The rollover column changes from white to red as the diesel rises. The column turns from red to white when the liquid level drops. The red and white junction of the indicator is the actual height of the liquid level inside the container. Thus, the actual result of the measurement can be displayed correctly.

Stainless Steel Level Sensor-Pressure Guided Submersible Level Transmitter is a good choice for diesel testing.
Its biggest advantage is simple installation and low cost. Professional commissioning and installation, setup, etc. are not required. Just put the stainless steel probe into the tank and the solid gauge head.

Extended Reading: How to Measure Volume of Liquid

Float Level Switches & Sensors with Magnetic Reed Switches for Continuous Level Measurement.

Float level sensor (float switch) is one type continuous level sensor for industrial level measurement. Float level sensor has a magnetic float that rises and falls as liquid level changes. The percentage of the liquid level, 4 ~ 20mA current and liquid level value, can be displayed on site. Applications like: water tank, fuel tank, level measurement and level control. Vertical, horizontal, and side mounted, all can be satisfied.

Read more about: Ultrasonic Tank Level Sensors for Tank Level Monitoring

Ultrasonic level sensor for diesel tank includes top mount and external mount. Oil tanks are storage equipment commonly used in oil depots, oil terminals, oilfield refineries and petrochemical enterprises. For the liquid medium (petrochemical products) in the tank, the liquid level, temperature, density and pressure (pressure storage tanks) are mainly measured. ) and other parameters. Calculate the volume and weight of the liquid storage.
Industrial diesel storage tanks are available in large and small tanks. Ultrasonic liquid level sensors can well meet the liquid level measurement of diesel tanks of various sizes and installation methods.

Extended reading: ultrasonic level sensor price

Radar level transmitters use radar technology to perform the non-contact continuous level measurement. The radar level indicator converts the level into an electrical signal. The level signal output can then be utilized by other instrumentation to monitor or control. Liquids and solids are commonly measured with this measuring technique. Like: Fly ash silo. Radar level sensors are divided into Pulsed radar technology and frequency modulated continuous wave (FMCW) radar level sensors.

Sino-Inst produces a 120GHz FMCW radar level sensor, 26GHz radar level meter, 6GHz level meter.

Magnetostrictive Level Transmitters are level sensors for continuous level measurement. It is the best technology for monitoring and controlling liquid level interface.

Magnetostrictive Level Transmitters are used for continuous measurement of liquid level and interface. Magnetostrictive level measurement is currently the best liquid level measurement and control technology.Sino-Inst’s Magnetostrictive Level Transmitters can provide two independent outputs: interface; overall level. It can be applied when the difference in specific gravity drops to 0.02. Magnetostrictive Level Sensors Commonly used for the measurement of the oil-water interface. And others include acid tanks, propane containers, desalter and sewage tanks. Magnetostrictive Level Transmitters are composed of three parts: probe rod, circuit unit and magnetic float. The flexible cable type and the outer buoy type are derived from the basic model. And has a variety of communication modes 4~20mA, 0~5V, 0~10V, HART, RS-485 and so on.

Read More About: Difference Between Class 1 Div 1 And Class 1 Div 2

Fuel-Diesel-Water Tank Level Sensor Monitoring

The oil depot liquid level monitoring system is a multi-functional management system applied to the oil depot, which can effectively manage the inflow, sales and storage of oil products in the oil depot by accurately measuring the oil level, temperature and other data of the oil tank.

Sino-Inst oil depot storage tank monitoring system is based on high-precision Fuel Tank Diesel Level Sensors. Combined with a dedicated regulatory information system. Realize automatic oil measurement and supervision for oil depots.

The system can complete the automatic measurement of the oil in the oil storage tank through each Fuel Tank Diesel Level Sensors when the oil storage tank is closed. Complete the on-site controller to realize the operation, display and remote transmission of the data measured by the liquid level sensor in the entire storage area.

The remote computer combines the received data and passes it through its internal dedicated management software. Realize the analysis of oil parameters in the oil tank, and directly reflect the operation of the storage tank.

Managers can grasp and understand the operation of each storage tank in time through their own computers. So as to reasonably carry out the production arrangement and scheduling.

Extended reading: Advantages of Oval Gear Mechanical Diesel Flow Meters

Water Tank Level Sensors

The Water Tank Level Sensor is an important part of the water tank level control system. Using a level sensor for the water tank, solenoid valve, control box, liquid level switch and other accessories can effectively form a Water Tank Level control system. Monitor the materials stored in the water tank. Master important data such as its liquid level, reserves, and quality. A reasonable liquid level can ensure the safe, reliable, and efficient operation of the storage tank.

Read more about: Water Tank Level Sensors Types

Propane Level Sensors

Propane tank level indicator is also called propane tank gauge level indicator, or propane tank level gauge. What kind of level gauge is used for Industrial propane level measurement?

Propane is a gas that can be liquefied. Chemical formula CHURCH, colorless, liquefiable gas. Slightly soluble in water, soluble in ethanol and ether.
Common Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement include radar level sensor; magnetostrictive level sensor; float level gauge; magnetic flap level gauge; ultrasonic level gauge.

Read More about: Large Propane Tank Level Indicator

Frequently
Asked
Questions

Help Center

The liquid level of diesel in the tank can be measured by various liquid level sensors.
The selection of Level Sensors for diesel and gasoline tanks should be determined according to the design results of the oil tank. Different structures choose different liquid level instruments.

Different kinds of fuel level sensors are based on different working principles.

Here is an example of a commonly used capacitive fuel level sensor:

The sensing part of the capacitive oil level sensor is a coaxial container. When the oil enters the container, it causes a change in the capacitance between the sensor housing and the sensing electrode. This variation is converted by the circuit and is precisely linear and temperature compensated. Output 4-20mA standard signal for display instrument.

Read more about: How to Choose the Right Diesel Fuel Level Sensor ?

Fuel level sensor is applied to the oil depot, by accurately measuring the level data of the oil tank. It can effectively manage the inflow, sales and storage of oil in the oil depot. Therefore, the fuel level sensor is very important for industrial and civil industries.

Fuel Level Sensor Monitoring & Measurement Solution

External Tank Level Indicator

External Mounted Tank Level Sensors External Tank Level Indicator refers to an externally mounted level sensor. It is used to install on the outside of the liquid storage tank to…

80GHZ Radar Level Transmitter

80 GHz Radar Level Measurement 80GHZ Radar Level Transmitter refers to a frequency modulated continuous wave (FMCW) radar product operating at 76-81GHz. It can be used for level measurement of…

Tank Level Gauges & Indicators

Tank level gauges are instruments used to indicate and control the height of the liquid level in the tank. Commonly used in water storage tanks, oil storage tanks, and underground…

Capacitive Fuel Level Sensor

The capacitive fuel level sensor refers to a capacitive liquid level transmitter used to measure the oil level. According to the principle of capacitance sensing, when the height of the…

Oil-water Interface Level Measurement Guide

Interface level measurement is very important for oil and gas, chemical tanks. At the same time, Interface level measurement is also a measurement and control challenge. In today’s increasingly modernized…

Diesel fuel tank level gauges & Indicators

Diesel fuel tank level gauges for industrial oil storage tanks are very important, for level monitoring. Can be divided into mechanical and electronic. Featured Diesel fuel tank level gauges for…

5 Industrial Propane Tank Level Indicators

Propane tank level indicator is also called propane tank gauge level indicator, or propane tank level gauge. What kind of level gauge is used for Industrial propane level measurement? Sino-Inst…

Sino-Inst is Manufacturer of diesel level sensors. We supply more than 20 kinds of diesel level sensors for Tanks. 40% submersible level meters, 40% External Ultrasonic Liquid Level Meters and 20% other types level sensors.

Diesel level sensors for Tanks are mainly used for level measurement of various oils.
It can measure even liquids such as water, seawater, oil, and slurry.

diesel level sensors for Tanks enable stable level measurement without tank modifications. This greatly meets the measurement needs of many applications. Can be used from small to large tanks.

Sino-Inst’s diesel level sensors for Tanks, made in China, Having good Quality, With better price. Our level measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a diesel level sensors for Diesel Tanks, flow sensor, or other device, give us a call.

Request a Quote

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Ultrasonic Level Sensor for Diesel Tanks | 5~150cm,0-30m

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Ultrasonic level sensor for diesel tank includes top mount and external mount. Oil tanks are storage equipment commonly used in oil depots, oil terminals, oilfield refineries and petrochemical enterprises. For the liquid medium (petrochemical products) in the tank, the liquid level, temperature, density and pressure (pressure storage tanks) are mainly measured. ) and other parameters. Calculate the volume and weight of the liquid storage.
Industrial diesel storage tanks are available in large and small tanks. Ultrasonic liquid level sensors can well meet the liquid level measurement of diesel tanks of various sizes and installation methods.

RFQ Level Sensors

Featured Ultrasonic Level Sensor for Diesel Tanks

ULT-100 Explosion-proof Ultrasonic Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
Portable Ultrasonic Liquid Level Indicator
Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank
ULT-200 Ultrasonic Level Detector

Challenges of Level Measurement in Industrial Diesel Tanks

Because the substances stored in diesel tanks are usually flammable, explosive, volatile, and toxic. In the event of leakage, accidents such as fire and explosion are likely to occur. Therefore, the general diesel tanks are divided into two categories: trade tanks and intermediate tanks.

The liquid level, temperature, density, volume, and mass of the trading tank must be monitored and measured frequently, and the accuracy is required.

Tundish tanks are usually only monitored for parameters such as level, temperature and pressure (pressurized storage tanks). In order to prevent the oil tank from roofing and evacuation accidents, it does not need to be handed over for measurement.

The selection of the diesel tank level sensor should be determined according to the design results of the oil tank. Different structures choose different liquid level instruments. Buried storage tanks and surface tanks, Ultrasonic Level Sensor for Diesel Tanks are cost-effective options.

Extended reading: fuel tank liquid level sensor 4-20ma

Features of Ultrasonic Fuel Level Sensors

  • Using non-contact measurement, the operation is stable and reliable, and it is not easily affected by the viscosity and density of the liquid.
  • Optionally, the ultrasonic level gauge can be installed in the silo and the upper part of the liquid tank. Or externally mounted.
  • It can be continuously measured at fixed points, and can easily provide measurement signals for telemetry and remote control.
  • The structure is simple, the reading is convenient, and it is very easy to install and maintain.
  • With temperature compensation function, it can be used in environments with large temperature difference, with high precision and strong adaptability.
  • With RS-485 communication interface. Special echo processing method is adopted to effectively avoid false echoes.
  • Higher explosion-proof level (ExdIICT6Gb) and protection level (up to IP66/IP67).
  • The PVDF material probe can ensure reliable measurement of the instrument in corrosive liquids or corrosive environments.
  • High cost performance and low maintenance cost.
  • Safe cleaning and long instrument life

Read more about: Ultrasonic VS Radar level transmitter-different applications

Ultrasonic Fuel Level Sensor Working Principle

Here we sort by where and how ultrasonic level sensors are installed.

The first type is the opening of the tank with the sensor mounted on the top.
The second type is that the tank body does not have holes, and the sensor is attached to the outer wall of the tank.
The third type is the sensor attached to the bottom of the tank.

Read more about: Ultrasonic Level Sensors for Liquids Applications

The principle of ultrasonic level gauge is that ultrasonic waves are reflected at the liquid level. Another way of saying it is echo measurement distance.

Ultrasound probes emit short ultrasonic pulses. After reception at the liquid level, echo pulses are generated over a corresponding time t. That is, it is reflected back through the liquid surface, and the probe accepts it.

Following the standard formula, the probe, surface spacing results can be obtained. The distance from the ultrasonic probe to the bottom of the vessel is denoted as h. When v is known, the time t is measured, and h is obtained.

  • Measuring range: 0~20m (each range can be set, special customization)
  • Blind zone: 0.25m~0.5m;
  • Range accuracy: 0.3%;
  • Ranging resolution: 1mm;
  • Pressure: below 3 atmospheres;
  • Instrument display: built-in LCD to display liquid level or space distance;
  • Analog output: 4~20mA two-wire or four-wire;
  • Digital output: RS485, Modbus protocol or customized protocol;
  • Power supply voltage: DC24V/AC220V, built-in lightning protection device;
  • Ambient temperature: -20℃~+60℃;
  • Protection class: IP65;

Extended reading: Sludge Blanket Level Detector Appliactions

The system kernel of the liquid level meter is based on special ultrasonic processing technology capable of high-speed digital signal processing. After processing, the liquid level value is precise enough that additional CPU analyzing, comparing or judging is unnecessary. Once the CPU acquires the liquid level value, the value is transmitted directly to NVRAM for storage and display. In addition, the liquid level meter can output a 4～20mA standard signal or transmit measurement results to a computer ( or secondary meter ) via an RS-485 interface.

As shown in Fig. 3-1, during the process of measuring liquid level, the modulated acoustic signal is transmitted from the probe and echoed from the liquid surface. The probe then detects the echoed signal. After going through preprocessing, processing and post-processing, this signal provides the accurate time t directly. The CPU then calculates the liquid level height value through a mathematical model.

h = act/2

h：Liquid level height

a：Correction factor

c：Ultrasound transmitting velocity in liquid

t：Time duration between transmission and reception of ultrasound signal

Measuring range3m, 5m, 10m, 20m, 30m
Display resolution1mm
Short time repetition1mm
Measurement error±1‰FS(Excessive wall thickness and temperature/pressure instability may affect measurement precision.)
Span shift±10 m
Current output4～20mA，Max load 750Ω
Communication interfaceRS-485,  IrDA
Operating ambient temperature for liquid level meter-20℃～+60℃
Operating ambient temperature for ultrasonic probe-50℃～+60℃(A probe with wider temperature range can be provided upon request）
Operating ambient humidity15%～100%RH
Explosion proof markEx d ⅡC T6 Gb 
Housing ingress protectionIP 67
Liquid level display4 digit OLED display
Blind areaThere is a blind area for the liquid level meter

Read More About: Difference Between Class 1 Div 1 And Class 1 Div 2

The oil level sensor is installed at the bottom of the tank. Applying the echo ranging principle of ultrasonic waves, the ultrasonic signal is sent out from the bottom. The sound wave reflects back
after encountering the oil surface, and then calculates the liquid level height according to the time and velocity formula. At the same time, combined with digital signal processing technology, the influence of container wall thickness can be overcome to achieve high-precision and non-perforated measurement of the liquid level in the container, which can meet the industrial application requirements.

Read More about: Factors To Consider When Choosing Explosion Proof Ultrasonic Level Sensors

Ultrasonic Fuel Level Sensors for Challenging Applications

Ultrasonic liquid level sensor is a liquid level sensor that is more commonly used to measure various material levels and liquid levels. It is divided into two types: integrated type and split type. Integrated ultrasonic level instrument, optional two-wire or four-wire system .The two-wire system can only supply 24VDC, 4-20mA current loop. Non-contact continuous measurement reduces maintenance and is cost-effective.

Extended Reading:

Laser Level Transmitter is a large-range, high-accuracy explosion-proof level measurement product supplied by Sino-Inst. It can measure media and application methods: particle, block, viscous, water conservancy, distance measurement, liquid level measurement, material level measurement

  1. The measured medium is flammable and explosive. Most of them are liquids and gases. For example: gasoline, alcohol, toluene, xylene, acetone, biogas, gas, hydrogen, etc., most of which are organic compounds. Solid: There are metal magnesium, metal sodium, yellow phosphorus, etc.
  2. Underground mines, including coal mines, iron ore, etc. Almost all mines require explosion-proof ultrasonic level sensors.
  3. Occasions with large dust. For example: wood processing workshop; coal processing workshop; when the dust reaches a certain concentration, it will also cause an explosion.
  4. Although there is no direct contact with flammable and explosive liquids and gases, it is also necessary to use explosion-proof ultrasonic level sensors and ultrasonic level sensors in explosion-proof areas. For example: fire pools in tank farms.

The above four situations require the installation of explosion-proof ultrasonic level sensors, which can avoid the existence of potential safety hazards.

Diesel Tank Level Monitoring System

The oil storage tank liquid level, temperature and pressure online monitoring system has changed the traditional method of using manual inspection ruler and laboratory analysis. Real-time dynamic monitoring of oil is realized. It provides accurate data basis for production operation and management decisions. Greatly avoid the occurrence of safety accidents.

All our level sensors support signal output. Including 4-20mA signal output. Or RS485 communication, etc.

So, if you connect the output signals of all liquid level sensors to a multi-channel recorder. Our paperless recorder can display and record the liquid level of each tank.

Extended reading: More Inline Digital Diesel Fuel Flow Meters

Monitoring Liquid Volume Solutions

Most of our liquid level sensors can output liquid level signals, such as 4-20mA signal, 0-10V signal, RS485 and so on.

However, the liquid level transmitter alone cannot calculate the liquid volume of tanks of different sizes. It’s too complicated. A separate recorder is required to calculate it.

Therefore, the digital display volume meter can collect, display and convert the liquid level of various regular and irregular tanks in the industrial field into the corresponding tank volume. It is suitable for monitoring, controlling and collecting various process parameters.

Ultrasonic technology is not only used to measure level, but also can be used to measure depth. More about The Difference Between Ultrasonic Depth Sensor And Ultrasonic Level Sensor.

More Featured Diesel Tank Level Sensors


SI-LT Magnetostrictive level transmitter with Local Digital Display
SI-U02 Multi-Point Liquid Level Float Switch
SI-U01 Float Level Sensor
SMT3151TR Submersible Level Transmitter–2Mpa,200m
SI-80 Radar Level Sensors
SIRD90 Radar Level Transmitters, Non-Contact
RF Capacitance Level Transmitter
SIRD70 Guided Wave Radar (GWR) Level Transmitters
Pressure Guided Submersible Level Transmitter

Alternative to VEGAPULS 64-80GHz FMCW Level Radar

Differential pressure(DP) level transmitter

SI-302 Anti-corrosive Submersible Level Transmitter

Frequently
Asked
Questions

Help Center

We are talking about industrial oil storage tanks here. In the past, people determined the liquid level of the diesel tank by manually reading the value of the liquid level gauge.
Now, we can install a variety of suitable level sensors on the tank. Through various signal outputs, monitor the liquid level of our tank remotely.

Read more about: How to Choose the Right Diesel Fuel Level Sensor ?

The measurement accuracy of our commonly used Ultrasonic Level Sensor for Diesel Tanks is 0.3%.

According to the principle of tank level measurement:

There are direct liquid level measuring instruments. Differential pressure type liquid level measuring instrument. Buoyancy type liquid level measuring instrument. Electric liquid level measuring instrument. Ultrasonic liquid level measuring instrument. Radar liquid level measuring instrument. Radioactive level measuring instruments, etc.

According to the measured medium characteristics:

Commonly used level gauges are heavy-hammer float level gauges. Magnetic flap level gauge. Radar level gauge. Ultrasonic level gauge. Differential pressure level gauge, etc.

Extended reading: Industrial Tank level indicators and Tank Level Gauges

More Featured Tank Level Measurement Solutions

External Tank Level Indicator

External Mounted Tank Level Sensors External Tank Level Indicator refers to an externally mounted level sensor. It is used to install on the outside of the liquid storage tank to…

80GHZ Radar Level Transmitter

80 GHz Radar Level Measurement 80GHZ Radar Level Transmitter refers to a frequency modulated continuous wave (FMCW) radar product operating at 76-81GHz. It can be used for level measurement of…

Point Level Measurement Sensors

What is Point Level Measurement? Point Level Measurement refers to the use of a point level sensor to detect the material level in a storage tank or silo. Also called…

Capacitive Fuel Level Sensor

The capacitive fuel level sensor refers to a capacitive liquid level transmitter used to measure the oil level. According to the principle of capacitance sensing, when the height of the…

Oil-water Interface Level Measurement Guide

Interface level measurement is very important for oil and gas, chemical tanks. At the same time, Interface level measurement is also a measurement and control challenge. In today’s increasingly modernized…

Ultrasonic Fuel Level Sensor Price

Sino-Inst is Manufacturer of Ultrasonic Level Sensor for Diesel Tanks. We supply more than 20 kinds of Ultrasonic Level Sensor for Diesel Tanks. 40% ultrasonic level meters, 40% External Ultrasonic Liquid Level Meters and 20% Externally attached Ultrasonic oil level sensors.

Explosion-proof ultrasonic liquid level sensor reference wholesale price USD 285.00/pc

Ultrasonic Level Sensor for Diesel Tanks are mainly used for level measurement of various oils.
It can measure even liquids such as water, seawater, oil, and slurry.

Ultrasonic Level Sensor for Diesel Tanks enable stable level measurement without tank modifications. This greatly meets the measurement needs of many applications. Can be used from small to large tanks.

Sino-Inst’s Ultrasonic Level Sensor for Diesel Tanks, made in China, Having good Quality, With better price. Our level measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Ultrasonic Level Sensor for Diesel Tanks, flow sensor, or other device, give us a call.

Request a Quote

Please enable JavaScript in your browser to submit the form

Flow Pressure Transducers for Fluid Pipelines

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Flow Pressure Transducers are measurements of fluid pressure within a pipeline. When fluid flows through a pipe, pressure acts on the pipe wall. The medium in the pipeline can be liquid or gas.
Measure the pressure of the fluid, on the one hand, you can understand the pressure in the pipeline. On the other hand, pipeline flow can be monitored through the relationship between pipe diameter-pressure-flow.

RFQ Pressure Transducers

Featured Flow Pressure Transducers for Sale

SI-350 Sanitary Pressure Transmitter

SI-390 Industrial Pressure Transmitter

SI-703 Flush diaphragm pressure sensor

SI-10 Liquid pressure sensor

SI-702 High Pressure Sensor

SI-702S Ultra-High Pressure Senors

SI-512H High Temperature Pressure Sensor

SI-706 Combined Pressure and Temperature Sensor-Dual function

Cryogenic Pressure Transducer

Explosion-proof Pressure Transmitter

Absolute Pressure Transmitter

Hydrostatic pressure transmitter

Extended reading: Static Pressure vs Dynamic Pressur

Measuring Flow with Pressure Sensors

Differential pressure sensors have been widely used to measure the flow of incompressible liquids. A very common method is to measure the pressure drop across the orifice in the pipe and calculate the flow.

An orifice plate is simply a plate that fits in a pipe (usually between flanges) with a hole of known size in its center. As the fluid flows through the orifice, a pressure drop develops across the orifice plate from the upstream side to the downstream side. This pressure drop is proportional to flow, and the sensor signal can be used to calculate flow in engineering units.

The upstream side of the orifice will have higher pressure and will be connected to the + port of the pressure sensor through a three-valve manifold. The downstream side of the orifice is similarly connected to the -port of the pressure sensor. The three-valve manifold is used to protect the pressure sensor from overpressure when the pressure sensor is installed into the work pipeline.

Calculations to determine flow from pressure drop are derived from fairly simple physical equations. However, there are many variables, each with its own engineering unit. These include: hole geometry, pipe size, fluid viscosity and fluid density. Given the number of terms and the conversion factors involved in each variable, the calculation can be quite involved.

Fortunately, there are many online calculators that allow you to simply enter variables in any engineering units that are convenient for you, and then calculate the flow rate for any given pressure drop across the orifice.

Learn more about Flow Rate And Pressure Formula, which may help you calculate mass or volume flow.

Extended reading: Temperature and pressure compensation of vortex steam flowmeter

Pipe diameter/velocity/flow comparison table (inlet > outlet)

Diameter (DN) Flow m3/h
0.4m/s 0.6m/s 0.8m/s 1.0m/s 1.2m/s 1.4m/s 1.6m/s 1.8m/s 2.0m/s 2.2m/s 2.4m/s 2.6m/s 2.8m/s 3.0m/s
20 0.5 0.7 0.9 1.1 1.4 1.6 1.8 2.0 2.3 2.5 2.7 2.9 3.2 3.4
25 0.7 1.1 1.4 1.8 2.1 2.5 2.8 3.2 3.5 3.9 4.2 4.6 4.9 5.3
32 1.2 1.7 2.3 2.9 3.5 4.1 4.6 5.2 5.8 6.4 6.9 7.5 8.1 8.7
40 1.8 2.7 3.6 4.5 5.4 6.3 7.2 8.1 9.0 10.0 10.9 11.8 12.7 13.6
50 2.8 4.2 5.7 7.1 8.5 9.9 11.3 12.7 14.1 15.6 17.0 18.4 19.8 21.2
65 4.8 7.2 9.6 11.9 14.3 16.7 19.1 21.5 23.9 26.3 28.7 31.1 33.4 35.8
80 7.2 10.9 14.5 18.1 21.7 25.3 29.0 32.6 36.2 39.8 43.4 47.0 50.7 54.3
100 11.3 17.0 22.6 28.3 33.9 39.6 45.2 50.9 56.5 62.2 67.9 73.5 79.2 84.8
125 17.7 26.5 35.3 44.2 53.0 61.9 70.7 79.5 88.4 97.2 106.0 114.9 123.7 132.5
150 25.4 38.2 50.9 63.6 76.3 89.1 101.8 114.5 127.2 140.0 152.7 165.4 178.1 190.9
200 45.2 67.9 90.5 113.1 135.7 158.3 181.0 203.6 226.2 248.8 271.4 294.1 316.7 339.3
250 70.7 106.0 141.4 176.7 212.1 247.4 282.7 318.1 353.4 388.8 424.1 459.5 494.8 530.1
300 101.8 152.7 203.6 254.5 305.4 356.3 407.1 458.0 508.9 559.8 610.7 661.6 712.5 763.4
350 138.5 207.8 277.1 346.4 415.6 484.9 554.2 623.4 692.7 762.0 831.3 900.5 969.8 1039.1
400 181.0 271.4 361.9 452.4 542.9 633.3 723.8 814.3 904.8 995.3 1085.7 1176.2 1266.7 1357.2
450 229.0 343.5 458.0 572.6 687.1 801.6 916.1 1030.6 1145.1 1259.6 1374.1 1488.6 1603.2 1717.7
500 282.7 424.1 565.5 706.9 848.2 989.6 1131.0 1272.3 1413.7 1555.1 1696.5 1837.8 1979.2 2120.6
600 407.1 610.7 814.3 1017.9 1221.4 1425.0 1628.6 1832.2 2035.7 2239.3 2442.9 2646.5 2850.0 3053.6

Extended Reading: MEMS Pressure Sensors

Diameter(DN) Recommended flow rate m/s:
20 25 32 40 50 65 80 100 125 150 200 250 300 350 400
closed system 0.5-0.6 0.6-0.7 0.7-0.9 0.8-1 0.9-1.2 1.1-1.4 1.2-1.6 1.3-1.8 1.5-2.0 1.6-2.2 1.8-2.5 1.8-2.6 1.9-2.9 1.6-2.5 1.8-2.6
open system 0.4-0.5 0.5-0.6 0.6-0.8 0.7-0.9 0.8-1.0 0.9-1.2 1.1-1.4 1.2-1.6 1.4-1.8 1.5-2.0 1.6-2.3 1.7-2.4 1.7-2.4 1.6-2.1 1.8-2.3

Extended reading: Differential pressure flow meter advantages and disadvantages

Applications of Flow Pressure Transducers

Fluid Pressure Transducers are mainly used in: construction machinery, hydraulic and pneumatic systems, petrochemicals, energy and water treatment, water conservancy and hydropower, compressors and other fields:

  1. Applied to hydraulic system
  2. Applied to safety control system
  3. Applied to injection mold
  4. Applied to monitoring mine pressure
  5. used in compressors, air conditioning and refrigeration equipment

Extended reading: High Pressure Flow Meters Types

How to install the pressure sensor when measuring the flow pipeline?

When detecting the gas and fluid pressure in the pipeline, the pressure guiding pipe is connected with a vertical tee before entering the pressure sensor. The sampling gas enters from the upper part of the tee. The lower part of the tee is connected to a water collecting irrigation, and the horizontal interface of the tee enters the pressure sensor .

The pressure sensor is installed horizontally. The sampling pressure pipe is connected to the upper part of the pressure sensor detection diaphragm. The lower part of the detection diaphragm has its own discharge bolt.

When there is liquid entering the pressure guiding pipe, a large part will be collected in the water collecting irrigation. A small amount of liquid entering the pressure sensor detection diaphragm can be discharged by the discharge bolt of the pressure sensor.

When measuring fluid pressure, the pressure of the main fluid is taken as the measurement object. Therefore, when the pressure sensor measures the gas pressure in the pipeline, in order to prevent the liquid in it from entering the sampling pressure pipe. The sampling point is 45° above the horizontal plane of the center of the pipeline.

When measuring the liquid pressure of the pipeline, in order to prevent the gas in it from entering the sampling pressure guiding tube, the sampling point is 45° below the horizontal plane of the center of the pipeline. Read more about: Shop 101: Key Factors In Selecting A Pipe Flow Meter

Even so, it is inevitable that different phases of fluid will enter the sampling impulse pipe. There are different requirements for the installation and configuration of the pressure sensor impulse pipe.

The water collecting tank or gas collecting tank installed on the pressure guiding pipe is equipped with an inlet valve and a discharge valve. During normal testing, the inlet valve is opened and the discharge valve is closed. When it is necessary to discharge, first close the inlet valve, and then open the discharge valve. . This discharge method will always have a bit of out-of-phase fluid remaining in the water or gas header, but it will not affect the pressure sensor detection accuracy.

Fluids include both gaseous fluids and liquid fluids. The density and pressure of gaseous fluids are lower than that of liquid fluids. So in pipeline fluids, the gaseous fluid is always above the liquid fluid. This is the basic characteristic of vapor-liquid two-phase fluid.

Extended reading: Pipe Diameter vs Pressure vs Flow

Frequently
Asked
Questions

Help Center

Pressure transmitters can be categorized into four main types:

  • Gauge Pressure Transmitter.
  • Absolute Transmitters.
  • Differential-Pressure Transmitter.
  • Multivariable Pressure Transmitters.

Extended Reading: 4 wire pressure sensor wiring diagram

There are many types of pressure sensors. Such as resistance strain gauge pressure sensors, semiconductor strain gauge pressure sensors, piezoresistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, resonant pressure sensors, etc.

Extended reading: wireless pressure transmitter working principle

Currently, the most widely used pressure sensors include:

  • Diffused silicon piezoresistive pressure sensor,
  • Ceramic piezoresistive pressure sensor,
  • Sputtering thin film pressure sensor,
  • Capacitive pressure sensor,
  • Sapphire pressure sensor with high temperature resistance.
  • But the most widely used is the piezoresistive pressure sensor, which has a very low price, high accuracy and good linearity.

Extended Reading: Electronic Pressure Switch for Air Compressor

Flow is an important parameter in industrial production and life. The amount of fluid flowing through a section of a pipe per unit time is called instantaneous flow. Instantaneous flow is divided into volume flow and mass flow. A flow sensor is a sensor that measures the flow of a fluid. Flow sensor is an important instrument in measurement technology, it is widely used in industrial process control, life science and technology, commercial application, military and other fields. In recent years, with the development of science and technology and the development of human needs, flow sensors are also constantly developing.

Extended reading: Digital Flow Meters

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Extended reading: High accuracy pressure transducers

Sino-Inst is Manufacturer of Flow Pressure Transducers for Fluid Pipelines. For High Viscosity Fluids-Chemical Coatings – Paints – Slurry – Asphalt – Crude Oil. We supply more than 20 kinds of Flow Pressure Transducers.

Flow Pressure Transducers are mainly used for highly viscous media.
It can measure even liquids such as water, seawater, oil, and slurry.

Sino-Inst’s Flow Pressure Transducers, made in China, Having good Quality, With better price. Our pressure measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Flow Pressure Transducer, level sensor, or other device, give us a call.

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Cryogenic Level Sensor for Liquid Nitrogen Tank Level Indicator

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The Cryogenic Level Sensor is a capacitance-based level transmitter for cryogenic liquid level measurement. Cryogenic Level Sensor is a customized product for liquid level measurement in low temperature environments such as liquid nitrogen, LNG, and liquid ammonia. Also called liquid nitrogen level sensor. This product has no moving parts and is not disturbed by the external environment. It has the advantages of long-term operation, high sensitivity, good linearity, low temperature resistance, etc. The cryogenic level sensor provides a variety of output signals. It is used in LNG liquid natural gas, petroleum, chemical industry, metallurgy, electric power, papermaking, pharmaceutical and other fields.

RFQ Level Transmitters

Features of Cryogenic Level Sensor

  • Working temperature: -196℃-80℃
  • Working pressure: 0-32MPA
  • Power supply: 5V 12-24V
  • Output: RS232 \ RS485 \0-5V\4-20mA
  • The length of the sensor and the junction box part can be customized according to customer requirements.

Remarks: The picture of this product does not represent the appearance of the product, everything is subject to the actual product

Extended reading: Low temperature Turbine Flowmeter-The Best Liquid Nitrogen Flow Meter

Technical Parameters

NoItemparameterRemark
1Operating VoltageDC 10V~30Vcustom made
2Probe working temperature-196℃～80℃custom made
3ambient temperature-40℃~80℃——
4scope of testcustom madecustom made
5Pressure range——Special can be customized
6Probe diameterΦ16custom made
7Installation methodcustom-madeSpecial can be customized
8Explosion-proof grade304 metal shellcustom made
9Precision class2.0/3.0Customized type is subject to use
10Analog output0~5V/RS232/RS485 /0-3.3VSpecial can be customized

Extended reading: Nitrogen(N2) Flow Meter Types

Liquid Nitrogen Level Measurement and Control

The intelligent control system of liquid nitrogen tank is based on ultra-low temperature application technology. It adopts the design method from qualitative to quantitative. It integrates the integrated application system of liquid nitrogen monitoring, equipment control, data communication, computer and alarm.

The liquid nitrogen tank intelligent control system uses technological means such as networking, communication, database, cloud storage, etc. to provide users with intelligent solutions that serve the entire life cycle of liquid nitrogen tank control.

Extended Reading:

Laser Level Transmitter is a large-range, high-accuracy explosion-proof level measurement product supplied by Sino-Inst.

The liquid nitrogen tank automatic liquid supply system solution can realize the control, monitoring, monitoring and fault diagnosis of all aspects of the entire liquid nitrogen supply system. Meet the requirements of liquid nitrogen tank intelligent control system for liquid supply system in various fields. Including liquid nitrogen residual monitoring, centralized liquid supply, separate liquid supply, fault diagnosis and alarm and system information integration and other requirements.

The system has powerful monitoring functions, data calculation and analysis and diagnosis capabilities. It can realize mutual communication control between various devices.

Read More About: Monitoring liquid volume solutions

Differential Pressure Measurement for Cryogenic Tanks

The differential pressure transmitter is difficult to measure the liquid level of the medium below -20℃. If it is necessary to measure the liquid level of low-temperature media such as liquid ammonia and liquid nitrogen, indirect measurement of gas isolation can be used.

As shown in the figure, the purpose of measuring the liquid level of low temperature medium is achieved by measuring the gas pressure in the pressure guiding pipe.

Because the liquid in the high-pressure side pressure guiding pipe is in a normal temperature state above the boiling point.

Therefore, the liquid in the pressure guiding tube evaporates into gas until saturated gas is formed in the pressure guiding tube.

The differential pressure transmitter should be installed above the maximum liquid level. The high pressure side is connected to the liquid phase pressure guiding pipe. Not only can the transmitter be in a working environment at room temperature, but also the low-temperature liquid can be fully vaporized.

In order to easily adjust the zero position of the instrument and replace the instrument, a balance valve should be installed between the high and low pressure sides of the differential pressure transmitter.

After the differential pressure transmitter is installed, the zero position should be adjusted, then the gas phase pressure pilot valve PL should be opened, and the zero position should be adjusted again under the working pressure.

Then open the liquid phase pressure pilot valve PH. Wait for a while for the cryogenic liquid to fully vaporize. Then close the balance valve to put the transmitter into operation.

When checking or adjusting zero during use, first open the balance valve to balance the pressure on the high and low pressure sides of the differential pressure transmitter, and then close the liquid phase pressure guide valve to check or adjust the zero position.

If the vaporized gas of the liquid to be tested is dangerous in contact with the air, certain safety measures should be taken during maintenance.

Differential pressure type level transmitter working principle

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Low temperature Turbine Flowmeter-Liquid Nitrogen Flow Meter

Target Flow Meter

Gear flow meter for Micro flow

Z-Series Straight Tube Micro Motion Coriolis Flow Meter
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T-series Triangle Coriolis Mass Flowmeter
Cryogenic Pressure Transducer

SI-512H High Temperature Pressure Sensor

Diaphragm Seal Pressure Transmitter

Portable Ultrasonic Liquid Level Indicator

The Most Common Types Of Level Indicators

Principle: The principle of the connector. Developed according to the principle of buoyancy and magnetic coupling.

When the liquid level in the container under test rises and falls. The permanent magnet steel in the float is transmitted to the magnetic flip column indicating panel through magnetic coupling. Flip the red and white columns over 180°.

The column turns from white to red when the liquid level rises.
The column turns from red to white when the liquid level drops.

The junction of red and white on the panel is the actual height of the liquid level in the container, so as to realize the liquid level display.

The structure of the float level meter is mainly designed and produced based on the principles of buoyancy and static magnetic field.

The position of the float with a magnet (abbreviated as float) in the measured medium is affected by buoyancy: changes in the liquid level lead to changes in the position of the magnetic float.

The magnet and sensor (reed switch) in the floating ball act to change the number of components (such as fixed-value resistors) connected in series to the circuit, thereby changing the electrical quantity of the instrument circuit system.

That is, the change of the position of the magnetic float causes the change of the electrical quantity.

The liquid level in the container is reflected by detecting the change of the electrical quantity.

Extended Reading: What is level transmitter working principle?

It is designed and manufactured using the principle of mechanical balance.

When the liquid level changes, the original mechanical balance will reach a new balance through the movement of the steel belt under the disturbance of the buoyancy of the float.

The liquid level detection device (float) drives the steel belt to move according to the liquid level. The displacement transmission system drives the transmission pin to rotate through the movement of the steel belt. It then acts on the counter to display the liquid level.

The radar level meter is a measuring instrument based on the principle of time travel. The radar wave runs at the speed of light, and the running time can be converted into a level signal by electronic components.

The probe emits high-frequency pulses and propagates along the cable probe. When the pulses meet the surface of the material, they are reflected back and received by the receiver in the instrument. The distance signal is converted into a level signal.

Extended Reading: Influence of Dielectric Constant on Liquid Level Measurement | Radar-Guided Wave Radar Level Meter

When the sensor of the magnetostrictive level transmitter works, the circuit part of the sensor will excite a pulse current on the waveguide wire. When the current propagates along the waveguide wire, a pulse current magnetic field will be generated around the waveguide wire.

There is a float outside the sensor rod of the magnetostrictive liquid level gauge. This float can move up and down along the rod with the change of the liquid level.

Inside the float there is a set of permanent magnetic rings.

When the magnetic field of the pulse current meets the magnetic field of the magnetic ring generated by the float, the magnetic field around the float changes so that the waveguide wire made of magnetostrictive material generates a torsional wave pulse at the position of the float. The waveguide wire is returned and detected by the detection mechanism.

By measuring the time difference between the pulse current and the torsional wave, the position of the float, that is, the position of the liquid surface, can be accurately determined.

Extended reading: Oil-water interface measurement-Magtech magnetic level indicator

The radio frequency admittance level meter is composed of a sensor and a control instrument. The sensor can be installed on the roof of the warehouse using rod-type, coaxial or cable-type probes.

The pulse card in the sensor can convert the material level change into a pulse signal and send it to the control instrument. After the control instrument is processed and converted into engineering quantity and displayed, it realizes the continuous measurement of the material level.

Read more about: Capacitive Level Measurement System

The working principle of the tuning fork level controller is to make the tuning fork vibrate at a certain resonance frequency through a pair of piezoelectric crystals installed on the tuning fork base.

When the tuning fork is in contact with the measured medium, the frequency and amplitude of the tuning fork will change. These changes are detected, processed and converted into a switching signal by an intelligent circuit.

The glass plate type liquid level meter is connected to the container through the flange to form a communication device, and the height of the liquid level in the container can be directly read through the glass plate.

The pressure level transmitter adopts the principle of static pressure measurement.

When the liquid level transmitter is put into a certain depth in the measured liquid.

At the same time as the pressure on the liquid surface of the sensor, the pressure of the liquid is introduced into the positive pressure chamber of the sensor through the air-conducting stainless steel. Then the atmospheric pressure Po on the liquid surface is connected to the negative pressure chamber of the sensor to offset the Po on the back of the sensor.

The pressure measured by the sensor is: ρ .g.H , and the liquid level depth can be obtained by measuring the pressure P .

Capacitive level meters measure the level of liquid level by measuring changes in capacitance.

It is a metal rod inserted into the liquid container. The metal rod is used as one pole of the capacitor. The wall of the container is used as the other pole of the capacitor.

The medium between the two electrodes is the liquid and the gas above it.

Because the dielectric constant ε1 of the liquid and the dielectric constant ε2 on the liquid surface are different. For example: ε1>ε2.

Then when the liquid level rises, the total dielectric constant value between the two electrodes of the capacitive liquid level gauge increases accordingly and the capacitance increases.

Conversely, when the liquid level drops, the value of ε decreases, and the capacitance also decreases.

Therefore, the capacitive liquid level meter can measure the level of the liquid level through the change of the capacitance between the two electrodes.

The intelligent electric displacer liquid level meter is a liquid level measuring instrument designed according to Archimedes’ law and the principle of magnetic coupling. The instrument can be used to measure the liquid level, boundary level and density, and is responsible for the output of upper and lower limit alarm signals.

It is designed and manufactured using the principle of mechanical balance.

When the liquid level changes, the original mechanical balance will be disturbed by the buoyancy of the float. The new balance will be achieved by the movement of the steel belt (rope).

The liquid level detection device (float) drives the steel belt (rope) to move according to the liquid level. The displacement transmission system drives the on-site indicating device through the movement of the steel belt (rope), and then displays the liquid level on the display device.

The pontoon is submerged in the liquid in the pontoon chamber and is rigidly connected to the torsion tube system. The force on the torsion tube system is the net weight of the pontoon minus the buoyancy on the pontoon. Under the action of this combined force, the torsion tube is twisted by a certain angle.

Changes in the position, density or boundary level of the liquid in the buoyancy chamber cause the buoyancy force of the buoyancy immersed in the liquid to change, so that the twisting angle of the tube also changes.

This change is transmitted to a sensor rigidly connected to the torsion tube. Change the sensor output voltage. Then it is amplified by electronic components and converted into 4-20mA current output.

Displacer level transmitters use microcontrollers and associated electronics to measure process variables. Provides current output. Drive LCD display and provide HART communication capability.

The magnetic-sensitive electronic two-color liquid level meter is made of high-quality stainless steel and imported electronic components.

The display part adopts high-brightness LED two-color light-emitting tube to form a columnar display screen.

Through the red and green changes of the LED light column, the upper and lower limit alarm and control of the liquid level can be realized.

The external liquid level meter is an instrument that measures the liquid level from the outside of the container using the principle of sonar ranging and “micro-vibration analysis” technology.

Two small external level gauge ultrasonic sensors are installed on the bottom of the tank and the other on the side wall of the tank to compensate for density changes.

The signal of the external level meter sensor is converted by the microprocessor and output to the local display or user control system. Can calculate the height of the liquid in the tank and the volume of the liquid in the tank

The hydrostatic level transmitter encapsulates the diffused silicon oil-filled core in a stainless steel shell.

The front protective cap protects the sensor diaphragm. It can also make the liquid contact the diaphragm smoothly. The water wire is sealed with the housing. The ventilation tube is connected to the outside world in the cable. The internal structure is designed to prevent condensation.

Ultrasonic level Sensor is composed of a complete ultrasonic sensor and control circuit.

The ultrasonic wave emitted by the ultrasonic sensor is reflected by the liquid surface. The time required to return is used for calculation.

The temperature influence in the ultrasonic transmission process is corrected by the temperature sensor, which is converted into the distance between the liquid surface and the ultrasonic sensor.

Output 4mA-20mADC analog signal through LCD screen. Realize remote reading of field instruments.

Read More about: How to Choose Explosion Proof Ultrasonic Level Sensor?

The differential pressure liquid level transmitter is an electrical component that measures the high and low pressure difference, and then converts it into a current signal by the conversion component and transmits it to the control room.

Differential pressure liquid level transmitter is mainly used for liquid level measurement of closed pressure vessels.

The size of the differential pressure also represents the size of the liquid level height.

Use a differential pressure gauge to measure the differential pressure between the gas and liquid phases to know the liquid level.

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Frequently
Asked
Questions

Help Center

The general liquid nitrogen tank can have its own liquid level indicator.
Some industrial liquid nitrogen storage tanks, without liquid level display, can be equipped with our very low temperature liquid nitrogen liquid level sensor. Local display is supported. At the same time, it supports signal output, which can be connected to the recorder or the user’s monitoring system.

Extended reading: Nitrogen Gas Rotameter

The design temperature of the liquid nitrogen tank is -196°C. There are two kinds of conventional pressures designed, one is 0.8MPa and the other is 1.6MPa. These two design pressures are based on usage needs.

When nitrogen is under pressure, the temperature reaches -196°C. It will become a dark blue liquid, which is liquid nitrogen. Liquid nitrogen can be stored under pressure or without pressure.

Of course, users can also measure the pressure for liquid nitrogen storage tanks according to their own needs. Just use our Cryogenic Pressure Transducer.

If you want to divide the level sensor into two categories. Then it can be divided into contact type and non-contact type liquid level sensor according to the measurement of whether it is released from the medium.

Extended reading: Non Contact Level Transmitters: Types & Industrial Applications

There are 7 main types of level transmitters that Sino-Instrument offers. Each type of transmitter works in a different way, and makes it useful for different types of processes.

Read more about: What is level transmitter working principle?

Sino-Inst is Manufacturer of Cryogenic Level Sensors for Liquid Nitrogen Tank Level Indicator. We supply more than 10 kinds of liquid nitrogen measure instruments.

Cryogenic Level Sensors are mainly used for level measurement of low temperature liquids.
It can measure even liquids such as Liquid Nitrogen, Liquid Oxygen, etc.

Cryogenic Level Sensors enable stable level measurement. This greatly meets the measurement needs of many applications. Can be used from small to large tanks.

Sino-Inst’s Cryogenic Level Sensors, made in China, Having good Quality, With better price. Our level measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Cryogenic Level Sensor, flow sensor, or other device, give us a call.

Request a Quote

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Collection of Industrial Insertion Flowmeter Types

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What is an insertion flow meter?

Insertion flowmeter is a type of flowmeter in which the measuring probe is inserted into the pipe to measure the flow. This is a type of flow meter divided by structure. It includes various flow meters with different working principles. Insertion flowmeter plays an important role in the measurement of large-diameter water flow. Light weight, low pressure loss, easy installation and maintenance.

There are many types of insertion flowmeters that have been popularized and used. According to the working principle of the insertion flowmeter detection head, it can be divided into insertion turbine, insertion vortex, insertion electromagnetic, uniform velocity tube and thermal flowmeter.

RFQ Flow Meters

Featured Insertion Flowmeters for Sale

Insertion Magnetic Flow Meter

Turbine Insertion Flow Meter

Insertion Vortex Flow Meter

Ultrasonic Insertion Flow Meter

 Annubar Flow Meter
Target Flow Meter

Gas Thermal Mass Flow Meter

VERIS Verabar Flow Meter

insertion flowmeter types

Insertion Magnetic Flow Meter, also called insertion electromagnetic flow meter, is an insertion type flow meter. Insertion magnetic flowmeter can be installed without stopping the flow. Suitable for large diameter DN300-3000.

  • Velocity measurement range: (0.1-10) m/s
  • Measuring pipe diameter: DN (100-3000) mm
  • Measurement accuracy: 1.5~2.5 class
  • Working pressure: <1.6MPa
  • Medium temperature: -20~150℃

Extended Reading: Special Magnetic Flowmeter Installation situation

Insertion Vortex Flow Meter is mainly used for flow measurement of gas, liquid, and steam fluid in large-diameter pipelines.

  1. It can measure the volume flow and mass flow of steam, gas and liquid;
  2. No mechanical moving parts, high measurement accuracy, compact structure and easy maintenance;
  3. Small pressure loss, wide range; range up to 1:25;
  4. Adopt interference elimination circuit and anti-vibration sensor head;
  5. The use of disturbance elimination circuit and anti-vibration sensor head makes the instrument have certain anti-vibration performance;
  6. The temperature of the measurable medium can reach +250℃.
  7. The sensor can be disassembled and installed continuously, and the amplifier and the sensor can be separated (separation distance 15m);

The insertion target flowmeter is developed on the basis of the traditional target flowmeter.
It has the characteristics of flowmeter without moving parts such as orifice plate and vortex street. At the same time, it has high sensitivity, accuracy comparable to that of positive displacement flowmeters, and a wide range.

  • Wide range of applicable pipe diameters: Φ10~Φ2000 to larger;
  • Wide temperature range: -196°C ~ 500°C;
  • Applicable to high/low pressure conditions: 0~42MPa;
  • Applicable to various media: gas, liquid (including high viscosity liquid, slurry), steam;
  • It is suitable for medium with low flow velocity, and its measurable minimum flow velocity is 0.08m/s.

The SI-VL Verabar Flow Meter is designed with an aerodynamic engineering structure and is a sensor element. The VERIS Verabar Flow Meter is a Insertion flow meter. A Verabar tube sensor is inserted into the pipe. When the fluid flows through the sensor, a high-pressure distribution zone is created in the forward direction of the flow. And a low-pressure distribution zone is created in the rear. Verabar Flow Meter can be used to measure dry gas, humid gas, liquid or vapor, without being limited by dielectric constant.

The insertion turbine sensor is matched with the display instrument to form an insertion turbine flowmeter. The insertion turbine flowmeter can be widely used in large-diameter pipeline source water, circulating water, purified water, etc. to measure the volume instantaneous flow and total volume of liquids.

Insertion turbine flowmeter features:

  1. The insertion turbine flowmeter has strong resistance to impurities. The tangential impeller can release the suspended debris in the fluid at any time when it rotates. so that it does not wrap around the blades of the tangential impeller;
  2. The structure and principle of the sensor and display instrument are very simple and intuitive, and it is very easy for users to master their use and maintenance technology;
  3. It has high anti-electromagnetic interference and anti-vibration capabilities, small pressure loss, wide flow range, and low lower limit flow rate. The impeller has anti-corrosion function;
  4. The sensor can be installed in the open air, and the entire sensor can be used in water for a long time. Horizontal, vertical and inclined pipes can be used;
  5. Sensor with shut-off valve. There is no need to cut off the current during installation and disassembly;

The Ultrasonic Insertion Flow Meter consists of a converter and a pair of insert sensors. The Insertion sensor consists of a positioning base, a ball valve, and a sensor core. Principle: When ultrasonic waves pass through the liquid, the liquid has a slight influence on the insertion time. The change of the insertion time is proportional to the liquid flow rate.

Annubar Flow Meter is a no-equal solution with a patented, averaging pitot tube that delivers superior measurement accuracy over a wide flow range. This flow meter can measure multiple variables and is engineered with an integrated thermowell for temperature measurement. Its patented T-shaped sensor is capable of obtaining measurements via a single pipe penetration while maintaining a small profile in the pipe to reduce permanent pressure loss and increase energy savings.

Insertion Thermal Mass Flow Meter can simultaneously display flow rate (flow), temperature. Low flow rates are responsive, and high flow rates can achieve good accuracy. Even at high temperature, a good constant temperature difference can be obtained, and the stability is good. There are a variety of installation options to choose from, with a measuring range up to 180Nm/s.

Measured medium: air, natural gas, biogas, coal gas, dry chlorine, oxygen, carbon monoxide combustion air, flue gas, flare gas, hydrogen, argon and other dry gases.

insertion flow meter wastewater

If an insertion flowmeter is to be selected for a wastewater pipeline, an insertion electromagnetic flowmeter must be the first choice.​​

The Insertion wastewater flowmeter can be widely used to measure the flow of conductive fluids in tap water, steel, petroleum, chemical industry, electric power, industry, water conservancy, water administration and water resources. It can also measure corrosive conductive liquids such as acids, alkalis, and salts.

The Insertion sewage flowmeter is mainly composed of a measuring head (or measuring tube), an excitation system, an insertion rod, a junction box, a mounting base, and a sealing and positioning mechanism.

Measuring head (or measuring tube): The measuring head (measuring tube) is located at the particle point of the measured flow velocity in the pipeline, and is used to detect the flow velocity at this point. A measuring head (or measuring tube) is a tip or conduit made of insulating material on which a pair of electrodes is mounted. Except for the electrode tip or the inner wall of the measuring tube, other parts are insulated from the fluid to be measured.

Excitation system: The function of the excitation system is to generate a working magnetic field. It consists of an excitation coil and an iron core. It is insulating sealed into the insertion rod.

Insert rod: Made of stainless steel material. The measuring head and the measuring tube are fixed in the insertion rod. The excitation lead and electrode lead are sealed with the measured medium and connected to the junction box through the insertion rod. A direction indicator is welded on the insertion rod to ensure that the working magnetic field, the flow rate and the electrode connection are perpendicular to each other during installation, which meets the requirements of Faraday’s law of electromagnetic induction.

Junction Box: The junction box is located on the top of the sensor. The terminals in the junction box connect the sensor and the converter to each other.

Mounting base: The mounting base is welded on the pipeline under test, used to connect with the mounting ball valve and insert the part of the sewage flowmeter sensor.

Sealing mechanism: It consists of a compression thread seat made of stainless steel, a compression nut, a rubber washer and a positioning screw. It is used to seal and insert the sewage sensor, so that it can avoid a certain working pressure.

insertion flow meter for air/compressed air

If you choose an insertion flowmeter for an air line, or a compressed air line. Then the insertion thermal mass flow meter can be said to be the first choice.

Because, the insertion thermal mass flow meter has obvious advantages:

  • Wide range ratio 1000:1; large diameter, low flow rate, negligible pressure loss;
  • Direct measurement of mass flow without temperature and pressure compensation;
  • Very sensitive measurement of low flow rates;
  • Easy to design and select, easy to install and use;
  • Suitable for all kinds of single or mixed gas flow measurement.

If you need to measure high temperature air, or high temperature compressed air. Then another type of flow meter may need to be selected. Such as high temperature Annubar flowmeter.

Frequently
Asked
Questions

Help Center

The installation requirements of various insertion flowmeters vary. Here is a brief introduction to the standard installation of plug-in electromagnetic flowmeters:

  1. The arrangement of instruments on the pipeline should be far away from the valve. Maintain a 10-diameter upstream intermediate pipe section and a 5-diameter downstream straight pipe section.
  2. The on-site power supply needs to match the instrument power supply, generally a 24V rectifier. If there is no external power supply for the field measurement, an external power supply meter will be connected.
  3. Pay attention to the flow direction of the measured liquid on the inner wall of the pipe. If the installation is reversed, the measured liquid will show a negative value.
  4. The installation site should be cool and rain-proof. If it is often rained or immersed in water, the protection grade IP68 product should be selected.
  5. The fluid flow in the pipeline should not be stopped if the process requires it. Media should not spill. A ball valve needs to be installed.

Different digital flow sensors include turbine, thermal mass, electromagnetic, ultrasonic, orifice plate, venturi. The different designs of the flowmeters have a variety of applications. With 4-20ma, RS485, or other output.

Then they all work differently. However, they can convert the flow signal into a digital display, or pulse, or 4-20mA signal.

Extended reading: Ultrasonic Flow Meters Types & Technical Guide

For different working principle, We offer different types of flow meters, like:

  • Differential Pressure Flow Meters
  • Orifice Plate
  • Venturi Tube
  • Flow Nozzles
  • The Sonic Nozzle – Critical (Choked) Flow Nozzle
  • Calorimetric Flowmeter
  • Ultrasonic Doppler Flowmeter
  • Positive Displacement Flowmeter
  • Variable Area Flowmeter or Rotameter
  • Velocity Flowmeters
  • Pitot Tubes
  • Electromagnetic Flowmeter
  • Turbine Flowmeter
  • Vortex Flow Meter
  • Thermal Flowmeter
  • Coriolis Flowmeter
  • Mass Flowmeters
  • Open Channel Flowmeters

Sino-Inst is Manufacturer of Insertion Flowmeters. We supply more than 20 kinds of Insertion Flow Meters. 40% insertion magnetic flowmeters, 30% insertion vortex flow meter and other types of flowmeters.

Insertion Flowmeters are mainly used for flow measurement of various liquids and gas.
It can measure even liquids such as water, seawater, oil, and slurry.

Insertion Flowmeters enable stable flow measurement without piping modifications. This greatly meets the measurement needs of many applications. Can be used from small to large tubes.

Sino-Inst’sInsertion Flowmeters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s an Insertion Flowmeter, level sensor, or other device, give us a call.

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Crude Oil Flow Meter

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Crude Oil Flow Meter refers to a type of flow meter that can accurately monitor and measure the flow of crude oil. Crude oil is an industrial raw material with complex physical and chemical properties. In the process of production, storage, transportation and trade, it is greatly affected by factors such as temperature, pressure and environment. Storage, transportation and handover not in accordance with standard specifications will lead to increased measurement errors and affect product quality.

Therefore, the flow measurement of crude oil has always been the focus and difficulty of the oil and gas extraction industry.

After years of service experience, Sino-Inst offers multiple crude oil flow meters. Including mass flowmeters, positive displacement flowmeters, turbine flowmeters, etc.

RFQ Flow Meters

Featured crude oil flow meters

Z-Series Straight Tube Micro Motion Coriolis Flow Meter
U-Series Liquid Mass Flow Meter
T-series Triangle Coriolis Mass Flowmeter
 Coriolis Flow Meter
Pointer Type Oval Gear Flow Meter
Oval Gear-Marine Fuel Flow Meter
High Temperature Oval Gear Flow Meter – Heating oil
Liquid Turbine Flow Meter
Turbine Insertion Flow Meter
Magnetic Water Flow Meter

types of crude oil flow meters

In terms of the medium to be measured, the crude oil containing impurities needs flow measurement, and the flow measurement of the working conditions with impurities itself is a big problem. Choosing the right crude oil flow meter is even harder.

Based on years of service experience, the following 7 type flowmeters are the types of flowmeters that we believe can effectively measure the flow of crude oil.

In order to realize the accurate measurement of crude oil production, real-time automatic measurement of incoming crude oil quality is the fundamental method.

The mass flow meter has high precision, easy to use and easy maintenance, and long service life. Crude oil production can be directly measured. It is supplemented by a computer real-time monitoring and measurement software system based on it. and utilize network resources. It can also realize remote real-time monitoring of the flowmeter.

The mass flow meter measures the crude oil quality, crude oil volume, water content, temperature and other data on the liquid pipeline in real time. It is displayed on the metering post through the on-site display instrument.

At the same time, the on-site display instrument transmits the relevant data signals to the on-site data storage and remote transmission equipment (industrial computer).

For the crude oil mass flowmeter used for single well measurement, due to the presence of some chemical substances in the measured medium, the flowmeter will cause scaling on the wall of the mass flowmeter measurement pipe after a period of operation.

The composition of scale is very complex, mainly composed of asphalt, wax, sulfide, carbide, etc.
The scale on the inner wall of the measuring tube of the flowmeter will affect the accuracy of mass flow and density measurement, thereby affecting the normal measurement performance of the mass flowmeter and causing a relatively large measurement error.

To ensure the normal use of the mass flowmeter, the flowmeter must be cleaned and descaled regularly. Then re-calibrate to determine the new configuration parameters of the instrument before it can be put into use again.

Extended Reading: Mechanical oil flow meter

It is well known that the oval gear flowmeter is especially suitable for the flow measurement of the medium with high viscosity such as heavy oil, polyvinyl alcohol, resin, etc. The oval gear flowmeter has high measurement accuracy. It is suitable for the measurement of high viscosity medium flow (generally the viscosity of the liquid to be measured is 2-3000Mpa.s).

But not suitable for fluids containing solid particles. If the measured liquid medium contains gas, it will also cause measurement errors.

Usually, the accuracy of the oval gear flowmeter can reach 0.5, which is a relatively accurate flow meter.

However, if the flow rate of the measured medium is too small, the influence of the leakage error of the oval gear flowmeter will be prominent. Sufficient measurement accuracy can no longer be guaranteed.

Extended Reading: Industrial petrol flow meters Types

The working principle of the dual rotor flowmeter is done in the metering chamber. It is directly meshed by a pair of special toothed helical rotors. No relative slippage.

Although the pressure of the liquid acting on the two rotors is different. However, a pair of synchronizing gears installed on the two rotors always maintains an appropriate gap between the two rotors, ensuring that the rotors can rotate smoothly and synchronously.

Several cavities with known volumes are formed between the rotor and the casing. Under the action of the measured medium, the micro-pressure difference between the inlet and outlet of the flowmeter drives the two helical rotors to rotate in opposite directions. The helical rotor can output 8 times the volume of the cavity per revolution.

Therefore, the number of revolutions of the rotor is proportional to the cumulative flow of the fluid. The rotational speed of the rotor is proportional to the instantaneous flow rate of the fluid. Therefore, the number of revolutions of the rotor can be transmitted to the counter through the transmission gear system to directly display the liquid flow.

At the same time, it can also be converted into an electrical pulse signal by adding an electromechanical conversion device. Then pass to the secondary instrument or computer for remote display and control.

The repeatability and stability of the dual-rotor flowmeter are in a linear state, which meets the requirements of crude oil export.

The dual-rotor flowmeter has been popularized and applied in various crude oil gathering and transportation stations and external transportation measurement rooms in oilfields. Undertook the measurement task of 4400t/d crude oil export, and its measurement data has been recognized by both sides of the trade.

Extended reading: Crude oil measurement, 80G radar level meter should be your first choice!

The target flowmeter adopts the latest force sensor as the measurement and sensitive transmission element. At the same time, the latest digital technology and microelectronic technology are applied. It is an intelligent flowmeter suitable for the measurement of fluids and gases with high viscosity, low Reynolds number and tiny particles.

The use of force sensors is the key to the true realization of high precision and high stability of this product.

The target flowmeter not only has the characteristics of traditional orifice plate, vortex flowmeter and other flowmeters without moving parts. At the same time, it has measurement accuracy comparable to that of positive displacement flowmeters. Coupled with its unique anti-interference, anti-impurity performance.

In addition to the target flowmeter can replace the conventional flowmeter and conventional fluid flow measurement. Especially in high viscosity, easy blocking, high temperature, high pressure, strong corrosion and other difficult flow measurement conditions have good application value.

At present, it has been widely used in flow measurement in various fields such as steel, oil, natural gas, electric power, papermaking, chemical industry, energy, food, environmental protection and so on.

Therefore, the target flowmeter is a good choice for measuring high viscosity crude oil.

As long as the Reynolds number fits within the measuring range of the target flowmeter, it can be measured. Viscosity changes do not need to be considered. In addition, it can be equipped with a temperature sensor for density correction, which can ensure good measurement accuracy.

Extended Reading: Petroleum Flow Meter

Turbine flowmeters can measure media such as special oils.

There are many varieties of oil, edible oil, peanut oil, diesel oil, gasoline, etc. are all oils. Turbine flowmeters measure the flow of liquids. However, it is not recommended to use it for measurement of too viscous liquids. Because the turbine flowmeter uses the principle of impeller rotation to measure the flow, and too viscous liquid will affect the rotation of the impeller.

Turbine flow meters can measure low temperature and non-viscous special oil. If the user’s working condition is measured on site, it is a special type of high temperature type oil. Nor can it be measured with a turbine flowmeter. The turbine flowmeter can only measure the working temperature when the ambient temperature on site is 120℃.

Therefore, the user chooses the turbine flowmeter to measure crude oil, and needs to choose according to the actual working conditions.

Magnetic Flow Meter is a flow meter that measures the flow of conductive fluids. Abbreviated as EMF, also called Electromagnetic flowmeters. It is a kind of Volumetric flow meter. A magnetic flow meter measures the velocity of conductive liquids moving through a pipe or conduit. In the wastewater treatment industry, Magnetic Flow Meter is the best flow meter choice.

The split-type electromagnetic flowmeter can also measure high-viscosity fluids. Based on the principle of electromagnetic flowmeter and other factors, this is theoretically true, but it also depends on the specific site.

In addition to measuring the flow of general conductive liquids, the split-type electromagnetic flowmeter can also measure liquid-solid two-phase flow, high-viscosity liquid flow and volume flow of salt, strong acid, and strong alkali liquids.

The differential pressure flow meter is measured by the working principle that there is a certain relationship between the pressure difference and the flow rate when the medium fluid flows through the throttling device. Differential pressure (DP) flow meters are the most widely used form of flow measurement products today. Including: integrated orifice flowmeter, average velocity tube flowmeter, venturi tube, wedge flowmeter, underwater flowmeter, orifice plate, orifice carrier assembly, nozzle flowmeter.

Differential pressure flowmeters always have unexpected advantages in measuring complex working conditions.

For example:
Wedge throttling device is a new type of throttling device developed by our company. , Its special structure, non-clogging, solid structure, long life, can be used to measure liquid, gas and steam.

It is especially suitable for flow measurement of fluids with low flow rate, high viscosity, dust or solid particles. Such as measuring crude oil, fuel oil, residual oil, coal tar, waste water, carbon black solution and other fluids.

Read more about: The Pros and Cons of Micro Motion Flow Transmitters

Summary of Crude Oil Flow Measurement Options

Flowmeters are the most commonly used instruments in oil exploration enterprises. The selection of flowmeters used in many production sites in oil fields is not reasonable, and some have installation errors, resulting in excessive measurement errors, and some cannot meet the needs of production or crude oil transfer measurement.

Many forms of flowmeters can measure crude oil, but when choosing a model based on experience and simply considering the purchase cost, you may lose the opportunity to choose the most suitable meter.

For example, the flow range of the instrument does not match the actual flow, and the instrument with high precision is selected for places with low measurement requirements.

It can be seen that the correct selection and use of flow meters is not an easy task. To choose a crude oil flowmeter correctly and efficiently. The following five factors must be considered, namely: performance requirements, physical properties of crude oil, installation requirements, environmental conditions and costs.

Read more about: Flow Meter Selection Guide

When selecting a flowmeter, the performance requirements to consider include: instantaneous flow, cumulative flow, degree, repeatability, linearity, flow range and range, pressure loss, output signal characteristics and response time.

Different measurement purposes have different options in terms of flowmeter performance. Such as crude oil trade settlement measurement requirements are relatively high.

Continuous measurement process control usually requires good reliability and repeatability. Sometimes a wide range of degrees is also required, and the requirements for measurement degrees should be placed in a secondary position.

The oilfield production site does not require the flowmeter to have too high accuracy, but it has good adaptability to the physical properties and working conditions of crude oil.

The operation of the crude oil flowmeter is affected by factors such as crude oil temperature, oil delivery pressure, crude oil density, crude oil viscosity, and flow rate.

The physical properties of crude oil will change to some extent with the changes of temperature and pressure.

When crude oil is measured by a flow meter, the volume of crude oil will be affected by changes in temperature, pressure, viscosity and other factors.

Among them, temperature is one of the most influential parameters in flow meter measurement. Changes in temperature can cause changes in a series of parameters, which change the volume, density, viscosity of the crude oil and the gap between the flowmeter housing and internal components, thus resulting in changes in leakage flow.

If the temperature is lowered, the paraffin and coke in the crude oil adhere to the inner wall of the shell and parts. This changes the volume of the metering chamber of the flowmeter. It directly affects the measurement accuracy of the flowmeter.

Flow meters of different principles have very different installation requirements. For example, differential pressure and turbine flowmeters require a long upstream straight pipe section, and some flowmeters do not have this requirement or have lower requirements. Some flowmeters need to consider the installation location and medium flow direction, maintenance space, installation direction, etc.

The measurement performance of the flowmeter is greatly affected by the installation conditions, and the reason for the large error of the flowmeter. Part of it is caused by poor installation.

Factors to be considered in the installation are: the installation direction of the flowmeter, the flow direction of the crude oil, the upstream and downstream straight pipe sections, the valve position, vibration, electromagnetic interference and maintenance space.

The ambient conditions of the meter and its expected changes, including ambient temperature, humidity, safety, and electrical interference, should be considered in the flowmeter selection process. The electronics of the meter and some of the meter’s flow sensing portion are affected by changes in ambient temperature.

For example, the size of the flow meter housing changes, and the heat transfer through the meter housing changes the density and viscosity of the fluid. When affecting the display meter electronics, it will degrade measurement performance. Sometimes the conversion display part and the flow sensor are installed in different places to ensure that the electronic components are not affected by temperature.

High humidity will accelerate atmospheric corrosion and electrolytic corrosion and reduce electrical insulation, and low humidity is prone to static electricity. These can have an effect on the circuit part of the flowmeter and sometimes even cause a malfunction.

In terms of economy, it is not comprehensive to consider only the purchase cost of the instrument, and other costs should also be considered. Such as accessories purchase costs, installation costs, maintenance and flow meter verification costs, operating costs and spare parts costs. Trade settlement measurement should also compare the economic losses caused by measurement errors.

The operating cost of the flowmeter is mainly the energy consumption during operation. Some flowmeters are powered by dry batteries, and the cost of battery consumption is also considerable. Pumping costs are a hidden cost that is often overlooked.

The maintenance cost is the cost required to maintain the normal operation of the measurement system after the instrument is installed and put into use, mainly including maintenance labor and spare parts. Instruments with moving parts generally require more maintenance work, such as regular replacement of wear-resistant bearings, shafts, rotors, transmission gears, etc.

The selection of crude oil flowmeter should comprehensively consider the five factors of instrument performance, fluid characteristics, installation conditions, environmental conditions and economy.

Encounter the phenomenon that the physical properties of crude oil, especially the viscosity-temperature characteristics, are not very clear. Special units should be invited to do a complete set of crude oil tests and make a physical property report.

Consult with the flowmeter manufacturer or technical department about the adaptability of various flowmeters and the influence of physical property changes on the performance of the flowmeter. Choose a flowmeter that meets your needs.

flow measurement in oil and gas industry

Every day, a large amount of oil and gas are transported back and forth, refined, and then transported, as well as custody transfer. Difficult oil and gas flow measurement challenges such as corrosive media and harsh environments are our daily work. This requires mature and safe technology. Through instrument measurement and display monitoring, safe and reliable operation can be achieved.

Many types of flow meters are used to measure oil and gas flow. Each type has its advantages and disadvantages.

Read more content discusses these advantages and disadvantages.

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Frequently
Asked
Questions

Help Center

Measuring oil flow is to measure the volume or mass flow of oil. According to the actual demand, and the actual parameters of the oil, the appropriate oil flow meter can be selected.

Extended reading: What Is Hydraulic Flow Meter?

Industrial oil flow meters measure the volume or mass of oil. Can realize the mutual conversion of volume and mass.

The main industrial oils are hydraulic oil. Gear Oil. Turbine oil. Compressor oil. Refrigeration oil. Transformer oil. Cylinder oil, heat treatment oil, heat transfer oil, etc. Of course, edible oil can also be produced in the industry. In addition, there are greases with lubricating oil as base oil and thickening agent.

Therefore, whether it is a company that uses, trades, or produces oil, it needs to accurately measure the oil flow.

There are many common oil flow meters, such as turbine flow meters, positive displacement flow meters, gear flow meters, mass flow meters, etc.

In the oil and gas industry, monitoring is required most of the time during transportation and processing. Including pressure, temperature, liquid level, flow, viscosity and more. And to achieve these functions are process meters.

Therefore, in the oil and gas industry, many meters are used. For example: thermometers, pressure gauges, flow meters, etc.

If the flowmeter is divided into 5 categories. Then the five commonly used flowmeters are:

  1. Electromagnetic flowmeter
  2. Differential pressure flowmeter
  3. Turbine flowmeter
  4. Ultrasonic flowmeter
  5. Volumetric flowmeter (PD)

Different digital flow sensors include turbine, thermal mass, electromagnetic, ultrasonic, orifice plate, venturi. The different designs of the flowmeters have a variety of applications. With 4-20ma, RS485, or other output.

Then they all work differently. However, they can convert the flow signal into a digital display, or pulse, or 4-20mA signal.

Extended reading: Ultrasonic Flow Meters Types & Technical Guide

Sino-Inst is Manufacturer of Crude Oil Flow Meters. We supply more than 20 kinds of Crude Oil Flow Meters. 40% mass flowmeters,30% oval gear flow meters and other types of flowmeters.

Crude Oil Flow Meters are mainly used for flow measurement of high viscosity crude oil flow.

Crude Oil Flow Meters enable stable flow measurement without piping modifications. This greatly meets the measurement needs of many applications. Can be used from small to large tubes.

Sino-Inst’s Crude Oil Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Crude Oil Flow Meter, level sensor, or other device, give us a call.

Request a Quote

Please enable JavaScript in your browser to submit the form

Pressure Transducer Wiring Diagram Guide: 2 Wire-3 Wire-4 Wire

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After the Pressure Transducer is installed, how should I wire it? Pressure sensor wiring refers to the electrical connection of the pressure sensor. A pressure transmitter is a conversion device that converts a pressure signal into an analog signal or a digital signal. Common signals include 4-20mA, 0-10V, 0-5V and other signals. The wiring methods of these signals generally include two-wire system, three-wire system, and four-wire system.

RFQ Pressure Transmitters

Many beginners struggle with sensor/transmitter wiring issues. Worry that the wrong connection will cause damage to the sensor/transmitter and affect the accuracy of the measurement. This article will discuss with you the wiring of pressure sensor/transmitter. Teach you how to deal with the wiring problems of two-wire, three-wire and four-wire sensors/transmitters.

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Hydrostatic pressure transmitter
SI-151 Hydrostatic Level Sensor
Remote Diaphragm Seal Pressure Transmitter

Pressure transducer is also called pressure transmitter.
A pressure transmitter is a device that converts pressure into pneumatic or electric signals for control and remote transmission.
It can convert physical pressure parameters such as gas and liquid sensed by the load cell sensor into standard electrical signals (such as 4~20mADC, etc.). It can be used to supply secondary instruments such as indicating alarms, recorders, and regulators for measurement and indication. and process regulation.

Read more about: Analog Pressure Transmitter VS Smart Pressure Transmitter

4-20mA pressure transmitter

4-20mA means that the minimum current is 4mA and the maximum current is 20mA.

The industry generally needs to measure various non-electrical physical quantities, such as temperature, pressure, speed, angle, etc. They all need to be converted into analog electrical signals before they can be transmitted to the control room or display equipment hundreds of meters away. This device that converts physical quantities into electrical signals is called a transmitter. The most widely used in the industry is to use a 4-20mA current to transmit analog quantities.

Because 4-20mA signals are least affected by electrical noise and resistance in the signal line, these sensors are best used when signals must be transmitted over long distances. These sensors are typically used in applications where the lead must be 1000 feet or more.

Extended Reading: strain gauge pressure transducer

When we talk about 2-wire, 3-wire and 4-wire transmitters, we are primarily referring to the way the transmitter is electrically connected and powered.
Here are their basic differences:

2-wire transmitter:

  • The power and signal outputs share two cables.
  • Usually the output is a 4-20mA current signal.
  • Since it requires only two cables, installation is relatively simple and low-cost.
  • Widely used in most process control applications.

3-wire transmitter:

  • There are usually two wires for power and one wire for output signals.
  • The output is usually voltage type, such as 0-10V.
  • Compared with 2-wire transmitters, 3-wire transmitters have separate power supplies and signals. Therefore, they may be more suitable in certain applications.

4-wire transmitter:

  • There are two wires for power and two wires for signal output.
  • Can output voltage or current signal, such as 4-20mA or 0-10V.
  • Due to their separate power and signal lines, 4-wire transmitters can often offer more functionality and performance, such as higher accuracy, remote configuration or HART communication.

Pressure sensor pinout refers to the pin layout or connection definition of the pressure sensor. You may also have heard of “4 pin pressure sensor” or “3 pin pressure sensor”.

The pin definition of the pressure sensor will tell the user the function of each pin or terminal. For example, which is the positive power supply (V+ or VCC), which is the ground (GND), which is the signal output, etc. Understanding these definitions is critical to properly connecting and using pressure sensors.

Here are some common pin definitions:

V+ or VCC: positive power supply. The sensor requires a power input.
GND or V-: Negative power supply or ground wire.
OUT or SIGNAL: signal output. This is the electrical signal output that the sensor converts into based on the measured pressure.
Other pins: Some pressure sensors may have pins with other functions, such as temperature output, I2C or SPI communication interface, etc.

“Instrument wire system” refers to the number of wires used for instrument power supply and standard signal transmission.

The name of the wire system is only after the birth of the two-wire transmitter.

This is the result of the widespread application of electronic amplifiers in instruments. The essence of amplification is an energy conversion process, which cannot be separated from power supply.

Therefore, the first appeared is the four-wire transmitter. That is, the two wires are responsible for the power supply. The outer two wires are responsible for outputting the converted and amplified signals (such as voltage, current, etc.).

Extended reading: Pressure Sensor Applications-Featured Industry Applications

2 wire pressure transducer wiring diagram

2-wire transmitter wiring diagram

The wiring of the two-wire transmitter is shown in the figure. Power supply is 24VDC. The output signal is 4-20mA. The load resistance is typically 250Ω. The 24V supply has the lowest negative wire potential. It’s the public point.

The smart transmitter can also load the FSK keying signal of the HART protocol on the 4-20mA signal. Some digital display meters have transmission function or 24V power supply function. The function is similar to that of a two-wire transmitter.

The power supply and current signal loop of the two-wire transmitter are:
The positive terminal of the 24V power supply → the positive terminal of the transmitter → the negative terminal of the transmitter → the positive terminal of the digital display meter → the negative terminal of the digital display meter → the negative terminal of the 24V power supply, the digital display meter receives the current signal.
If a resistor R is connected in parallel with the positive and negative terminals of the digital display. The digital display meter receives the voltage signal.

Extended reading: High accuracy pressure transducers

3 wire pressure transducer wiring diagram

3-wire transmitter wiring diagram

The positive terminal of the power supply of the three-wire transmitter uses one wire. Use a line for the positive end of the signal output. The negative terminal of the power supply and the negative terminal of the signal share a line. as the picture shows. The power supply is mostly 24VDC, and the output signal is mostly 4-20mA.

The power loop of the three-wire transmitter is:
24V power supply positive terminal→transmitter positive power supply wiring V+ terminal→transmitter negative terminal (common terminal)→24V power supply negative terminal.

The current signal loop is:
Transmitter’s current output I+ positive terminal → digital display meter positive terminal → digital display meter negative terminal → transmitter’s negative terminal (common terminal), the digital display meter receives the current signal.

If a resistor R is connected in parallel with the positive and negative terminals of the digital display meter, the digital display meter receives the voltage signal.

Read more about: What Is 0-10V Signal Output?

4 wire pressure transducer wiring diagram

4-wire transmitter wiring diagram

The power supply and signal of the four-wire transmitter use two wires each, and the power supply and the signal work separately. As shown in the figure, most of the power supply is 220VAC, and there are also 24VDC. The output signal is mostly 4-20mA.

The current signal loop of the four-wire transmitter is:
The current output positive end of the transmitter → the positive end of the digital display meter → the negative end of the digital display meter → the negative end of the transmitter, the digital display meter receives the current signal.

If a resistor R is connected in parallel with the positive and negative terminals of the digital display meter, the digital display meter receives the voltage signal.

Extended reading: Troubleshooting For 4-20ma Pressure Transmitter

Frequently
Asked
Questions

Help Center

The working principle of the pressure transducer is to convert the weak non-electrical pressure-pressure variable collected by the sensor into a transmissible standardized signal output.

At the same time, it is enlarged to supply secondary instruments such as indicating alarms, recorders, and regulators for measurement, indication and process adjustment.

The converted electrical signal has a certain continuous functional relationship (usually a linear function) with the pressure variable.

The pressure transmitter is mainly composed of three parts: the sensitive element, the sensing element and the measurement conversion circuit.

Extended Reading: Smart pressure transmitter

Two-wire transmission has specific requirements for its minimum supply voltage, output current, and transmitter power consumption.

Only when these three conditions are satisfied in the design can the two-wire transmission be realized. The four-wire system requirements are not as high as the two-wire system.

Therefore, the two-wire system and the four-wire system have different requirements for the electronic components of the whole circuit.

For the two-wire instrument, the output signal is mostly 4-20mA (there are also frequency signal output).

But the four-wire instrument has more output signals, such as current signal 4-20mA, 0-10mA, voltage (millivolt) signal, frequency signal, etc.

Our pressure transmitters can also be upgraded to Low power-battery powered Wireless Pressure Sensors.

For a 2-wire pressure transmitter, there are usually two wires. The positive wire is connected to the positive pole of the power supply and outputs the signal, and the negative wire is connected to the negative pole of the power supply or ground.
For 3-wire or 4-wire pressure transmitters, connect the power supply wire and signal output wire respectively according to the instructions in the manual.

Pressure transmitters usually have 2, 3 or 4 wires. It depends on the model and function.

A common electrical output from a pressure transmitter is a 4-20mA current output. But there are also models with 0-10V, 0-5V and other voltage outputs.

Yes, the pressure transmitter requires a power supply. A 2-wire transmitter supplies power and transmits signals simultaneously via its two wires. 3-wire and 4-wire transmitters usually have dedicated power supply lines.

The 3-wire 4-20mA transmitter usually has a dedicated power supply line, and the other two lines are the ground wire and the signal output line. This is different from a 2-wire transmitter, where power and signal share two wires.

Connect the signal output line of the pressure transmitter to the analog input of the VFD. Make sure the transmitter ground wire is connected to the VFD ground. In the parameter settings of the VFD, configure the corresponding analog input as pressure feedback, and adjust the parameters as needed.

Pressure Transducer Wiring is actually very simple. Generally, when the pressure transmitter is used and installed, there will be an installation manual, which can be installed directly according to the manual.

Pressure transmitters include capacitive pressure transmitters and resistive pressure transmitters. A pressure transmitter is a device that converts the pressure of a gas or liquid into a usable electrical signal.

The pressure transmitter can be divided into two-wire system, three-wire system and four-wire system according to the wiring method.

The pressure transmitter has two power lines and two signal lines. The power supply is connected to 24v DC. The simple detection method is to use an ammeter or voltmeter to connect both ends of the signal line.

After the pressure transmitter power supply is connected, the ammeter will have 4ma current or the voltmeter will have 0v or 1V voltage. Read more about: What Is 0-10V Signal Output?

The current transmitter generally has 4 terminals. Two are wired. The other two do not need to be wired. The DC24V power line of the transmitter is also a 4-20mA signal feedback line.

That is to say, the AI ​​point of your secondary meter or DAS (data acquisition system) should have a DC24V feed output.

Generally, the 4-20mA pressure transmitter is a 2-wire system, powered by 24V, and outputs a 4-20mA current signal. After the pressure transmitter arrives at the scene, many people do not know how to wire it. This is a very painful and headache.

In fact, when you open the back cover of the pressure transmitter, you will see four terminals. OUT positive and negative and TEST positive and negative. Here we take OUT positive and negative.

TEST positive and negative is the factory, the manufacturer used to calibrate the pressure transmitter. It is not necessary to control the function of the two terminals when using it on site.

Direct OUT positive and negative on the line.

Extended Reading: Fluid pressure sensor

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Sino-Inst is Manufacturer of Pressure Transducers. We supply more than 100 kinds of Pressure Transducers. 50% 2 Wire Pressure Transducers, 40% 4 Wire Pressure Transducers, and other types of Pressure Transducers.

Sino-Inst’s Pressure Transducers, made in China, Having good Quality, With better price. Our pressure measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Pressure Transducers, level sensor, or other device, give us a call.

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