Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
The bi-metal thermometer is a simple, durable, and inexpensive temperature measuring device. The bimetal thermometer combines two different metals with linear expansion coefficients. Different metals expand at different rates when heated. The bimetallic strip particles deflect to indicate the temperature. Therefore, bi-metal thermometers are also called dial thermometers.
WSS series bi-metal thermometer is an on-site detection instrument for measuring low and medium temperatures. Directly measure the temperature of fluid, steam, and gas in the range of -80℃~500℃. The structure of the bimetal thermometer is divided into radial, axial and universal.
Features of SI-WSS Adjustable Angle Bi-metal Thermometer
WSS bimetal thermometer is waterproof and dustproof to IP65.
It is anti-corrosion and anti-vibration. The whole instrument is made of stainless steel. It is suitable for corrosive occasions.
The dial of the oil-filled bimetallic thermometer is filled with oil, which increases the damping of the pointer and plays a seismic effect.
When the hot-jacket bimetal thermometer needs to be replaced when the equipment is overhauled or the bimetal thermometer is damaged, there is no need to cool down, reduce pressure, or stop the machine. You only need to remove the watch core. The enterprise can avoid unnecessary economic losses. Continuous production can be achieved.
The electrical contact bimetal thermometer has a mechanical electrical contact device. When the temperature of the measured medium changes. The thin shaft on the free end drives the pointer and the movable contact to rotate. The temperature change value is indicated on the dial. When it is with The instant when the fixed contact is contacted or disconnected. The relay and contactor in the external circuit system are activated to achieve the purpose of automatic control and alarm.
This instrument has reliable structure, novel appearance, light weight and beautiful appearance.
Adjustable Bimetal Thermometer Specifications:
Accuracy: ± 1.5% Full Scale (ASME B40.3 Grade A)
Dial Size: 63 up to 150 mm
Dial Material:
Anodized aluminum with black marks on satin matte finish background;
White or Hi-Vis™ background available.
Stem Length: 2.5 – 24″, other lengths available
Stem Diameter: 1/4” (std)
Head, Bezel, Mounting Bushing, Stems: 300 Series SS, 316SS (optional)
Operating Conditions:
The head temperature should not exceed 200°F (150°F if silicone filled).
The stem should not be exposed to continuous temperatures exceeding 50% over-range or 800°F(550°F if silicone filled).
Temperature Ranges: See inside back cover of temperature catalog for the complete list of ranges.
Case Rating: IP67, NEMA 6 Rated (Hermetically sealed per ASME B40.3)
The bimetal thermometer is an on-site detection instrument for measuring low and medium temperatures.
The bimetal thermometer can directly measure the temperature of the liquid, steam, and gaseous media in the range of -80℃~+500℃ in various production processes.
The bimetallic thermometer features an on-site temperature display, which is intuitive and convenient. Safe and reliable. long-lasting. It has a variety of structural forms. Can meet different requirements.
Bimetal thermometers are available in axial type, radial type, universal type, and other meter head models. The length of the bimetal thermometer probe can be customized according to customer needs.
The on-site temperature display is intuitive, convenient, safe, and reliable, and has a long service life. The core-pulling thermometer can maintain or replace the movement in a short time without stopping the machine. Axial type, radial type, 135 type, universal type, and other varieties are complete. Adapt to various on-site installation needs.
Please provide the model, dial diameter, accuracy grade, installation and fixing form, temperature measurement range, protective tube material, protective tube diameter, length, or insertion depth.
The accuracy grade of the bimetal thermometer is divided by its allowable error as a percentage of the dial scale value.
The greater the number of accuracy levels, the greater the allowable error to account for the limit value of the dial scale. The larger the range, the greater the allowable error of the absolute value of the measured temperature value for the same accuracy level.
Class 1.5 and Class 1.0 respectively indicate that the allowable error of the thermometer is ±1.5 and ±1.0% of the range under normal use.
The current 1.5-level accuracy has been able to meet the measurement needs of most customers.
The bimetallic thermometer uses a hot bimetallic piece wound into a threaded shape as a temperature-sensing device. And install it in the protective sleeve. One end is fixed, called the fixed end. The other end is connected to a thin shaft, called the free end.
A pointer is provided on the free end spool.
When the temperature changes, the free end of the temperature sensing device rotates accordingly. Drive the pointer on the thin shaft to produce angle changes. Indicate the corresponding temperature on the dial.
The temperature measurement range is -80~600C, which is suitable for temperature measurement when the precision is not high in the industry. As a kind of temperature sensing element, the bimetal can also be used for automatic temperature control.
The bimetal thermometer reads quickly. Real-time measurement is achieved. Therefore, bimetal thermometers have been widely used in industrial production and manufacturing.
At the same time, because it uses metal materials to measure temperature, because of the high melting point performance of the metal itself. Can withstand very high temperatures. Therefore, the measurement effect of this temperature under high-temperature conditions is particularly excellent.
Much high-temperature liquid, gas, and other medium temperature tests. Will use this WSS series bimetal thermometer to measure temperature.
Most bimetal thermometers are pointer type. The temperature is displayed in time. Of course, with the development of products, bimetal thermometers with digital display have appeared. It is more convenient for users to read.
If you need the datasheet, price, or more information about SI-WSS Adjustable Angle Bimetal Thermometer,
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
WZP PT100 is an industrial thermal resistance. It is used as a sensor for measuring temperature, and it is used in conjunction with display instruments, recording instruments and electronic regulators.
WZP PT100 industrial thermal resistance is the most commonly used temperature detector in the middle and low temperature areas. The main features are high measurement accuracy and stable performance. Among them, the measurement accuracy of platinum thermal resistance is the highest. It is not only widely used in industrial temperature measurement, but also made into a standard reference instrument.
Note: ︱ t ︱ is the absolute value of the humidity measured by the hygrometer;
More About WZP PT100
PT100 and RTD are both temperature sensors, but PT100 specifically refers to a type of RTD (Resistance Temperature Detector).
RTD is a type of temperature sensor that works by measuring changes in electrical resistance as temperature changes. PT100 RTDs have a resistance of 100 ohms at 0 degrees Celsius, which makes them a common choice for temperature measurement in industrial and scientific applications.
So, PT100 is just one type of RTD sensor that has a specific resistance value at a specific temperature.
A PT100 temperature sensor is a type of temperature sensor that measures temperature by detecting changes in electrical resistance. Specifically, it is an RTD (Resistance Temperature Detector) that has a resistance of 100 ohms at 0 degrees Celsius.
As the temperature changes, the resistance of the sensor also changes in a predictable way, allowing the sensor to accurately measure the temperature. PT100 sensors are commonly used in industrial and scientific applications where precise temperature measurement is important.
PTC and PT100 are both types of temperature sensors, but they work in different ways.
PTC stands for Positive Temperature Coefficient, and it is a type of thermistor that increases in resistance as temperature increases. In other words, the resistance of a PTC sensor goes up as the temperature it is measuring goes up. PTC sensors are commonly used in applications such as over-temperature protection in electronic circuits.
PT100, on the other hand, is a type of RTD (Resistance Temperature Detector) that has a specific resistance value of 100 ohms at 0 degrees Celsius. As temperature changes, the resistance of a PT100 sensor changes in a predictable way, allowing it to accurately measure temperature. PT100 sensors are commonly used in industrial and scientific applications where precise temperature measurement is important.
So, the main difference between PTC and PT100 is that PTC sensors increase in resistance as temperature increases. While PT100 sensors have a specific resistance value at a specific temperature and change resistance in a predictable way as temperature changes.
Calibrating a PT100 temperature sensor involves comparing its readings to known, accurate temperatures and making adjustments to the sensor’s output to ensure it is reading accurately.
Here are the basic steps for calibrating a PT100 sensor:
Obtain a reference thermometer or other temperature calibration device with a known, accurate temperature reading.
Place the reference thermometer and the PT100 sensor in a controlled environment with a stable temperature.
Wait for the temperature to stabilize and record the readings from both the reference thermometer and the PT100 sensor.
Compare the readings and calculate the difference between the two.
Adjust the output of the PT100 sensor as needed to match the reference thermometer reading.
Repeat the process at several different temperatures to ensure accuracy across a range of temperatures.
It’s important to note that calibrating a PT100 sensor can be a complex and technical process. And it may be best to consult with a professional or use specialized calibration equipment to ensure accurate results.
Here are some key differences between RTD temperature sensors and thermocouples:
RTD Temperature Sensors
Thermocouples
Higher accuracy and repeatability; Smaller temperature range; Less susceptible to EMI; More stable over time and exhibit less drift; Require a stable, regulated power source to operate; Can be more expensive;
Wider temperature range; Can operate in harsher environments; Do not require a power source to operate; Can be less expensive; More susceptible to EMI; Can exhibit more drift and require frequent calibration;
Standard Platinum Rhodium Thermocouple-Platinum Thermocouple Standard Platinum Rhodium Thermocouple is a temperature measurement standard device produced by our company. There…
A thermocouple chart is a practical tool for the electronic query of temperature index. It is used by technicians who…
Industrial thermal resistance has the characteristics of high sensitivity and good stability and is widely used. If equipped with corrosion protection tube. Can also be used in corrosive media.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Temperature Transmitters (4-20mA), also known as thermocouple temperature transmitter, or thermal resistance temperature transmitter, are sensors with an electrical transmission output.
From wall mounted to PC programmable, to LCD Display, to intrinsically safe models,
there are a variety of transmitters to choose from.
Sino-Instrument’s economical devices provide accuracy and reliability at the lowest possible cost.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Gauge Pressure Sensor (GP) is a pressure transmitter for Gauge pressure measurement. SI-3151GP Capacitive Gauge Pressure Transducers use capacitive sensing elements to measure gauge pressure.
Gauge pressure (GP) transmitters compare process pressure with local ambient air pressure. Gauge pressure transmitters have ports for a real-time sampling of ambient air pressure. There are different types of pressure measurement. Such as gauge pressure, absolute and differential pressure measurement. Among them, the gauge pressure measurement is performed using a gauge pressure transmitter. These devices are designed to measure pressure relative to ambient atmospheric pressure. The output of the gauge pressure sensor will vary depending on the atmosphere or different altitudes. Measurements above ambient pressure are expressed as positive numbers. And negative numbers indicate measurements below ambient pressure. At Sino-Inst, we offer gauge pressure transmitters for a variety of industrial applications.
Sino-Inst offers a variety of Gauge Pressure Transmitter for industrial pressure measurement. If you have any questions, please contact our sales engineers.
TIIS flameproof (Exd IICT4) KOSHA flameproof FM explosion proof, intrinsic safe and Nonincendive ATEX/NEPSI/IECEx flameproof, intrinsic safe and Type n INMETRO flameproof
4 to 20 mA DC (SFN communication) 4 to 20 mA DC (HART® communication) MODBUS-485 signal
Process connections
Rc 1/2 or 1/2 NPT internal thread
Safety certification
Safety Integrity Level (SIL) 2 certification
By selecting from a large range of materials, we are able to customize the transmitter and supplyremote seals.
We temperature compensate for the whole assembly to maintain the highest level of performance.
Selecting from 316SS, Hastelloy, Monel, Tantalum, Gold, and Ceramic.
We can custom build a transmitter to our own high standards, or to your individual specifications.
To provide high flexibility, remote seals can be fitted to any of the SI series of transmitters.
For further information, please Contact us.
Gauge Pressure Sensor Applications
Pressure transmittersare used to measure level, density, and pressure of liquids, gases or vapors. And then converted to a 4-20 mA DC signal output. The SI-3151 GP intelligent pressure transmitter can communicate with the HART Communicator.
There are many types of pressure sensors, which are widely used in:
Water plants. Oil refineries. Sewage treatment plants. Building materials. Light industry. Machinery and other industrial fields.
To achieve the measurement of liquid, gas, steam pressure.
However, different pressure sensors are required for different applications.
The pressure sensor can be used to measure some mechanical physical quantities such as: Displacement. Vibration. Angular velocity and acceleration.
It is also widely used in the measurement of thermal engineering parameters such as: Pressure. Differential pressure. Liquid pressure. And content of ingredients.
Gauge Pressure Sensor working principle
What is gauge pressure?
Gauge pressure, also known as ‘relative pressure’ or ‘vented gauge pressure’. Gauge pressure is the measurement of pressure relative to atmospheric or barometric pressure.Gauge pressure sensor has the back of the sensing element open (or ‘vented’), to provide a reference to atmospheric. More about the Difference between absolute, gage and differential pressure.
How does a gauge pressure sensor work?
Gauge Pressure Transmitter / transducer (GP) is a pressure transmitter for Gauge pressure measurement. According to the measurement principle, it can be divided into: capacitive and diffused silicon.
Capacitive pressure sensor (capacitive type pressure transducer) is a pressure sensor that uses a capacitive sensing element to convert the measured pressure into an electrical output with a certain relationship. It is characterized by low input energy, high dynamic response, small natural effects, and good environmental adaptability. It generally uses a round metal film or metal-plated film as an electrode of the capacitor. When the membrane is deformed by pressure, the capacitance formed between the membrane and the fixed electrode changes. Through the measuring circuit, the electrical signal with a certain relationship with the voltage can be output. Capacitive pressure sensor is a capacitive sensor with variable pole distance. It can be divided into single capacitive pressure sensor and differential capacitive pressure sensor.
SMT3151 TGP-Gauge Pressure Transmitter / Transducer is a diffusion silicon pressure transmitter. The working principle of the diffused silicon pressure sensor is based on the piezoresistive effect. Using the principle of piezoresistive effect, the pressure of the measured medium directly acts on the diaphragm of the sensor (stainless steel or ceramic). Make the diaphragm produce a slight displacement proportional to the pressure of the medium. To change the resistance value of the sensor. Use electronic circuits to detect this change. And convert and output a standard measurement signal corresponding to this pressure.
3151 gage pressure transmitter
Gauge vs Absolute Pressure Sensor
In terms of pressure type, pressure sensors can be divided into gauge pressure, absolute pressure, and negative pressure.
Absolute pressure: Absolute pressure for short, is the pressure calculated from the absolute zero pressure or the vacuum starting point.
Gage pressure: refers to the pressure calculated from the atmospheric pressure of a specific place at a specific time as a starting point. Atmospheric pressure at the same location will change slightly.
Vacuum: When the measured absolute pressure is less than atmospheric pressure, the difference between the measured absolute pressure and absolute vacuum.
Negative pressure: when the measured absolute pressure is less than atmospheric pressure, the difference between the current atmospheric pressure and the measured absolute pressure, referred to as negative pressure.
The formula for the relationship between absolute pressure, gauge pressure, and atmospheric pressure: absolute pressure = gauge pressure + atmospheric pressure.
Therefore, when selecting a pressure sensor, it is generally necessary to clearly indicate the pressure type of the pressure sensor,
Gauge vs Absolute Pressure Sensor
Gauge pressure and absolute pressure are based on different measurement reference points. The reference point for gauge pressure measurement is the local atmospheric pressure. Absolute pressure is the absolute vacuum zero. Absolute pressure sensors cannot replace gauge pressure sensors.
In layman’s terms. When your measured object uses atmospheric pressure as the reference point, and only has the inflation action, select the gauge pressure type. When your measured object takes absolute vacuum zero as the reference point, and there are inflation and inhalation actions, it is often the absolute pressure type.
The two principles of gauge pressure and absolute pressure sensor are different! Cannot be used instead!
Cryogenic pressure transducer for low temperature pressure measurement. -196℃~+125℃、-260℃/-350c(especial). Sino-Inst offers a variety of Pressure Sensors for…
A pressure transmitter also often called a pressure transducer. A pressure transmitter is a device used to…
Sino-Instrument Gauge Pressure Transmitters, made in China, are high-performance cost-effective devices, used where long term accuracy and reliability is a priority.
SI-3151GP Advanced Transmitter Gauge Pressure Transmitters, are used to measure the pressure of gases, liquids, and steam, as well as to measure tank pressure and fluid levels. Sino-Instrument 1151 Gauge Pressure Transmitters are high-performance cost effective devices used, where long term accuracy and reliability is a priority. We also offer Gauge Pressure Transmitter SMT3151 TGP, forthe process, oil and gas industry.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Venturi flow meter is also called classical venturi, and is used to call venturi meter, standard venturi. It is used to measure the flow of single-phase stable fluid in closed pipelines.
Venturi flow meter is a flow measurement method based on the principle of differential pressure. Commonly used to measure the flow of fluids such as air, natural gas, coal gas, and water. In the standard throttling device, the upstream and downstream straight pipe sections required by it are short. The lasting pressure loss is small, the performance is stable, and the maintenance is convenient.
Sino-Inst, Manufacturer for differential pressure flow meters. Including the Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas, and steam flow measurement. Please contact our sales engineers for technical support!
Less head loss than an orifice or nozzle meter, due to the streamlined design
Ideal for clear gas, liquid or steam applications
Available in many materials and end arrangements
Can be equipped with fittings to accept secondary instrumentation packages
The classic venturi tube is simple, durable and stable in performance.
Classic venturi pressure loss is small, saving the energy needed for fluid delivery.
Classic venturi tube in the range of 50 ~ 1200.
No real-flow calibration is required.
Beyond this range, you can refer to the design and manufacture.
When high precision is required, real-time calibration is possible.
The body is installed in long size, and it is not convenient for transportation and installation for large-diameter instruments.
What is a venturi flow meter?
Venturi flowmeter, also known as venturi tube flow meter. It is a commonly used device for measuring the flow of pressurized pipelines.
It is a differential pressure flowmeter, and is commonly used to measure the flow of air, natural gas, gas, water, and other fluids.
It consists of a “contraction section”, a “throat” and a “diffusion section”, which are installed on the pipe where the flow rate needs to be measured.
The classic venturi tube is designed and manufactured, according to China GB/T2624-93, and is verified according to the verification procedure JJG640-94.
In the standard throttling device, it requires the shortest upstream and downstream straight pipes, the lowest pressure loss, stable performance, and convenient maintenance.
Because of its accurate calculation and low energy consumption, it has been widely used in petroleum, chemical, electric power, and metallurgy industries.
Venturi flow meter parameters:
1. Nominal diameter: 50mm≤DN≤1200mm (more than this range needs to be calibrated)
The axial section of the classic venturi is shown in the figure above.
It is composed of an inlet cylinder section A, a conical contraction section B, a cylindrical throat C, and a conical diffusion section E.
The diameter of the cylinder section A is D, the length is equal to D. The contraction section B is conical and has an angle of 21 ° ± 1 °. The throat C is a cylindrical shape of diameter d, the length of which is equal to d;
E is conical and has a diffusion angle of 7° to 15°.
The constricted section of the classic venturi is divided into three forms: a coarse cast shrinkage section, a machined shrinkage section, and a coarse welded iron plate shrinkage section.
The upper-pressure port and the throat pressure port of the classic venturi, are made into several (not less than four) separate tube wall pressure ports.
And several separate tube walls are pressure-connected by a pressure-equalizing ring.
When d≥33.3mm, the diameter of the throat pressure port is 4~10mm, the diameter of the upstream pressure port should be no more than 0.1D. When d≤33.3mm, the diameter of the throat pressure port is 0.1d~0.13d. The diameter of the upstream pressure tap is 0.1d to 0.1D.
The Venturi flow meter produces a differential pressure, to calculate the flow rate through a pipe.
The meter works by measuring the pressure of fluid before and after it passes through a narrow tube; the pressure difference indicates the volumetric rate of flow.
The basic measurement principle of the new generation, of differential pressure flow measuring instruments, is the flow measurement method based on the law of conservation of energy – the primary effort equation and the flow continuity equation.
The inner venturi consists of a circular measuring tube, and a special core placed in the measuring tube and coaxial with the measuring tube.
The outer surface of the special core has a geometric profile, similar to the inner surface of a classic venturi. And forms a different diameter annular flow gap with the inner surface of the measuring tube.
How does a Venturi meter work?
The working of venturi meter is based on the principle of Bernoulli’s equation.
Bernoulli’s Statement:
It states that in a steady, ideal flow of an incompressible fluid, the total energy at any point of the fluid is constant.
The total energy consists of pressure energy, kinetic energy, and potential energy or datum energy.
Mathematically:
Here all the energies are taken per unit weight of the fluid.
The Bernoulli’s equation for the fluid passing through the section 1 and 2 are given by
Since its development, venturi products have been successfully applied to the measurement of high-humidity natural gas, low-pressure dirty biogas, coke oven gas, gas, steam, hot water, high-temperature hot kerosene, etc., And the practical application range is rapidly expanding.
Besides, the venturi tube has a unique measurement advantage, for measuring conditions such as long straight pipe installation conditions, special high temperature, high pressure, strong corrosive and dirty media, and non-single phase flow measurement.
Of course, in the sewage and wastewater treatment industry, in addition to venturi flowmeters, electromagnetic flowmeters are also the first consideration for many users. For example, if you need to measure the flow of wastewater in a 2-inch pipe. Then you can refer to: Magnetic Flow Meters Guides.
The orifice flow meter is a flowmeter with a variable cross-sectional pressure difference.
The velocity at the vein is the largest, the pressure of the fluid is minimized, the structure is simple, but the resistance loss is large.
The Venturi flow meter is also a flowmeter with a variable cross-section pressure difference.
On the basis of the orifice flowmeter, the orifice plate is replaced by a lengthy and gradually expanding short tube, and the structure is simple, the resistance loss is small, but the cost is high.
The orifice flowmeter is similar to the venturi flowmeter, in terms of working principle. But some of the main differences are that the orifice plate can be easily replaced. Adapting to a wide range of different flow rates, while the venturi’s throat diameter is fixed.
The measured flow rate range is limited by the actual pressure difference.
Due to the vortex on the downstream side of the orifice plate, the permanent loss of the orifice flowmeter is large. And the structural shape of the venturi flowmeter can avoid the formation of vortices.
Thus, permanent losses can be greatly reduced.
Venturi flowmeters consume much less energy in measuring flow than orifice flowmeters.
But because venturi flowmeters are more time consuming and expensive than orifice flowmeters, in manufacturing and processing.
Orifice flowmeters is the least troublesome when installing the pipeline and the lowest cost.
In fluid measurement, venturi flowmeters are typically used for the measurement of gas flow at low flow rates.
The orifice flow coefficient in orifice flowmeters is significantly affected by fluid disturbances, which are generated upstream of the orifice plate.
The influence of valves, elbows and other fittings.
The value of its flow coefficient is less affected by downstream disturbances.
Typically, such flow meters should be installed at 50 and 10 pipes diameters, from the upstream and downstream disturbance components, respectively.
It is obvious that the required distance is related to the nature of the disturbance.
Therefore, when measuring with an orifice flowmeter, the orifice flowmeter must be properly installed according to the disturbance of the fluid.
Through the specific analysis and comparison of the orifice flowmeter and the venturi flowmeter, the advantages and disadvantages between them can be seen. And the user is reminded to analyze and compare more when selecting the flowmeter.
In this way, you can choose the measurement tools you need.
To meet the different measurement requirements of different field conditions, Pitot tube flow sensors are divided into standard and functional structures.
The standard type is suitable for the measurement of pure gas, steam, liquid and various chemical materials and liquids. The function is suitable for the working conditions of easy blockage, adhesion, high impurity content, and solid-liquid mixed flow such as various coal gas in the metallurgical industry. Measurement of gas, steam and various liquids.
Smart Pitoba flowmeter is easy to scale and easy to install. Just make a hole in the pipeline. Insert the Smart Pitoba into the center of the pipeline. Connect it with the pipeline by welding or flange.
The difference between Pitot tube vs venturi meter, in simple terms:
Pitto is taking advantage of the same point. The only difference between the total pressure and the static pressure is the dynamic pressure V2/2g to obtain the speed and flow.
The Venturi nozzle is used to pass through two points of variable diameter. The measured pressure difference is the dynamic pressure increase (or static pressure decrease). List the continuity equation with the product of diameter and velocity. Then find the speed and flow.
Yes, Venturi tubes can measure volume flow. To be precise, the Venturi tube measures differential pressure. The differential pressure signal is transmitted to the integrator or the monitoring system, and the compensation operation is performed. is further converted into traffic. Most customers monitor volume flow.
The Venturi effect, also known as the Venturi effect. This phenomenon is named after its discoverer, the Italian physicist Giovanni Battista Venturi.
This effect is manifested when the restricted flow passes through the narrowed flow section. The flow velocity of the fluid increases, and the flow velocity is inversely proportional to the flow section.
And according to Bernoulli’s law, the increase of flow velocity is accompanied by the decrease of fluid pressure. That is, the common Venturi phenomenon.
In layman’s terms, this effect means that a low pressure will be generated near a fluid flowing at a high speed, resulting in adsorption. Using this effect, a venturi can be made.
Venturi Flow Meter is a device for measuring the flow of a pressure pipeline, which belongs to a differential pressure flowmeter. It is generally installed on the pipeline that needs to measure the flow, and can measure the flow of air, natural gas, gas, water and other fluids. Venturi Flow Meter is widely used in many energy and power industries such as gas, electricity, cement, etc. due to its simple structure, wide range of applicable working conditions, and easy real-time monitoring.
When the fluid flows through the orifice plate of the orifice flow instrument device, the cross-sectional area decreases and the velocity increases. The corresponding pressure decreases. And the degree of reduction is proportional to the fluid velocity in the flow state.
Therefore, the flow rate can be calculated by detecting the pressure difference, and then the flow rate can be calculated.
Under normal circumstances, if we want to measure differential pressure, we can directly purchase a differential pressure transmitter.
However, in fluid pipelines. The differential pressure of the fluid cannot be measured directly. A throttle is required.
When the differential pressure flowmeter measures the fluid flow parameters, it is based on the differential pressure generated by the throttling part. When the fluid passes through the throttling part, because the pipe section becomes narrower. Therefore, the flow velocity of the fluid in the pipeline increases, and the kinetic energy of the fluid also increases. increased accordingly.
Ideally, when the fluid velocity increases, part of the static pressure will be converted into fluid kinetic energy. The static pressure value of the fluid will decrease accordingly.
At this time, a pressure difference is generated, and there is a certain functional relationship between the pressure difference and the fluid flow. Only by measuring the pressure difference, the flow value of the fluid can be determined.
Measuring Steam Flow Measuring Steam Flow is a difficult task. But again, it’s a very important thing. Steam flow measurement is difficult, the main reason is determined by the characteristics…
What is Digital Flow Meter for Argon Gas? Digital flow meter for argon gas refers to a flow meter that can be used for detection, display, transmission, and signal output…
What is BTU Meter for Chilled Water? The BTU Meter for Chilled Water accurately measures the thermal energy consumed by chilled water in British Thermal Units (BTU). This is a…
What is PD flow meter? PD flow meters (positive displacement flow meters) are the only flow measurement technology that directly measures the volume of fluid passing through the flow meter.Rotating…
Fuel Flow Meter for Boat refers to a flow meter dedicated to measuring marine fuel. There are many types of marine fuel oil. Mainly include light diesel, heavy diesel, fuel…
Digital Fuel Flow Meter is a flow meter dedicated to measuring fuel, diesel, gasoline, and petroleum. Digital Fuel Flow Meter generally has a digital display or signal output. Such as…
Water flow measurement is common in both industry and life. You may often hear about the use of electromagnetic flowmeters to measure wastewater. The clamp-on ultrasonic flowmeter measures large water…
A flow totalizer meter is sometimes referred to as a flow meter or flow totalizer. flow totalizer meter displays the flow rate from either an analog or pulse output flow…
What is Strap on Ultrasonic Flow Meters? Strap on Ultrasonic Flow Meter is also often called Clamp On Type Flow Meter. The unique feature of Strap on Ultrasonic Flow Meter…
What is 4-20ma Flow Meter? 4-20mA Flow Meters are those flow meters with 4-20mA current signal output function. The signal current of general instruments is 4-20mA. This means that the…
what is a venturi tube? The Venturi Tube is a tubular device commonly used to measure fluid flow rates. It is based on a physical principle, the Venturi effect. This…
A gear flow meter is a common positive displacement flow meter. The gear flow sensor has built-in double gears to operate. The volume of the medium is calculated by the…
Molasses flow meters are a type of flow meter used for molasses flow measurement. Molasses are common high viscosity liquids. So Molasses flow meters are flow meters that can be…
Sino-Inst, China, supplies all kinds of Flow Meters. Provide professional flow measurement solutions.
A wide variety of Annubar flow meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.
The top supplying country is China (Mainland), which supply 100% of the turbine flow meter respectively. Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
Request a Quote
Please enable JavaScript in your browser to submit the form
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
The VERIS Verabar Flow Meter, also called the Verabar Averaging Pitot Tubes, is a kind of differential pressure flow meter.
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 plug-in 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.
Sino-Inst, Manufacturer for differential pressure flow meters. Including the Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas, and steam flow measurement. Please contact our sales engineers for technical support!
VERIS Verabar flow sensors combined with Sino-Inst differential pressure transmitters. Provide the most reliable and accurate DP flow measurement solution on the market.
The VL200 can be inserted and removed under pressure.
Use this model when you can not shut down the pipe to insert the sensor.
The VL200 is the most frequently sold hot-tap model.
It is available in single rod and double rod units for high pressure.
SI-VL350 verabar flow meter
SI-VL350verabar flow meter
The VL350 can be inserted and removed under pressure.
The insertion mechanism (Jack) can be removed and used on multiple pipes.
The Jack can be stored in a dry location away from the elements making it ideal for outdoor and coastal installations.
SI-VL400 verabar flow meter
SI-VL400 verabar flow meter
The VL400 can be inserted and removed under pressure.
Similar to a VL200 except it has a flanged connection to the pipe for added sealing capability.
When plant regulations require a flanged hot tap connection, the VL400 is the correct model to use.
It is available in single rod and double rod units for high pressure.
VERIS Verabar Flow Meter Structure
The Verabar meter flowmeter consists of a detection rod, pressure tap, and a guide rod.
The cross-sectional shape of the detection tube of Verabar is divided into a variety of structures such as a circle,a diamond shape, and an elliptical shape.
What is Verabar Flow Meter?
The VERIS verabar flow meter is a high precision measuring instrument. Based on the principle of a piton tube measurement and applies the air dynamic theory.
Verabar flow meters belong to differential pressure flow meters, rate average of the flow sensor.
It measure flow rate through the differential, between average total pressure and static pressure, which often is used to measure the flow rate of the liquids, steam, and gas.
When the fluid flows through the probe, a high-pressure distribution zone is created at the front.
And the pressure in the high-pressure distribution zone is slightly higher than the static pressure of the pipeline.
According to the Bernoulli equation, the velocity of the fluid flowing through the probe is increased, and a low-pressure distribution zone is generated at the rear of the probe.
The pressure in the low-pressure distribution zone is slightly lower than the static pressure of the pipeline.
The fluid flows from the probe and creates a partial vacuum, at the back of the probe with vortices on either side of the probe.
The cross-sectional shape of the constant velocity flow probe, the rough surface condition and the position of the low-pressure tapping orifice are key factors, in determining probe performance.
The stability and accuracy of the low voltage signal are decisive for the accuracy, and performance of the uniform velocity probe.
The Verabar average velocity probe detects the average differential pressure produced, by the average velocity of the fluid.
The VERIS Verabar average velocity flow probe has multiple pairs of pressure tapping holes, arranged in certain directions in the high and low-pressure areas, which makes it possible to accurately measure the average flow rate.
Applications of Verabar Flow Meter
VERIS Verabar flowmeters are widely used in power plants, petrochemicals, metallurgy, water treatment, fine chemicals, environmental protection and other industries.
Sino-Inst offers over 10 VERIS Verabar flow meter products. These are differential pressure flow meters, 40% are water meters (like the Insertion Turbine Flow Meter), and 40% are water treatment (like the Annubar flow meter ).
A wide variety of VERIS Verabar flow meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of VERIS Verabar flow meter, located in China. The top supplying country is China (Mainland), which supply 100% of the VERIS Verabar flow meter respectively.
Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. VERIS Verabar flow meter products are most popular in Domestic Market, Southeast Asia, and Mid East.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
Request a Quote
Please enable JavaScript in your browser to submit the form
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Annubar flow meter also known as flute-shaped constant velocity tube flow meter and Toba tube flow meter. Annubar flow meter is a differential pressure flow meter.
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.
Sino-Inst, Manufacturer for differential pressure flow meters. Including the Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas, and steam flow measurement. Please contact our sales engineers for technical support!
The output of the Annubar flowmeter is a differential pressure signal.
It can be used with instruments that measure differential pressure to accurately measure a variety of liquids, gases and vapors (superheated steam and saturated steam) in the He-shaped pipe and rectangular pipe.
The size of the pipe to be tested ranges from 20MM to 5000MM. Annubar has been successfully used in the chemical industry, (including the nuclear industry) chemical industry, petrochemical industry and metal smelting industry.
It is suitable for:
Gas delivery and liquid delivery
Energy research, steam boiler heat rate, pump efficiency.
Gas compressor efficiency and fuel consumption
Process control: input and output, ratio, balance; cooling water or air, steam heating.
Feeding in the chemical industry
The Use and Characteristics of the Annubar flowmeter
The Annubar flowmeter is an ideal substitute for differential pressure fow measurement. Because of its simple installation, low-pressure loss, high strength, no wear and no leakage.
It can be widely used in industrial and mining enterprises to measure the flow of blast furnace gas, compressed air, steam and other liquids and gases.
1. The unique internal secondary average structure provides high precision (±1% reading), and high repeatability (±0.1%).
2. The outer impact tube of the Annubar flowmeter, is processed by a single piece of material without welding.
It has the highest strength, compared with similar products welded by the double-body structure. And it is also convenient to use high-temperature resistance and corrosion resistant material.
Working principle of Annubar flow meter
Annubar flow meter working principle
When the fluid flows through the probe, a high-pressure distribution zone is created at the front. And the pressure in the high-pressure distribution zone is slightly higher than the static pressure of the pipeline.
According to the Bernoulli equation, the velocity of the fluid flowing through the probe is increased. And a low pressure distribution zone is generated at the rear of the probe.
The pressure in the low-pressure distribution zone is slightly lower, than the static pressure of the pipeline.
The fluid flows from the probe and creates a partial vacuum, at the back of the probe with vortices on either side of the probe.
The cross-sectional shape of the constant velocity flow probe, the rough surface condition and the position of the low-pressure tapping orifice are key factors, in determining probe performance.
The stability and accuracy of the low voltage signal, is decisive for the accuracy and performance of the uniform velocity probe.
The Annubar average velocity probe detects the average differential pressure, produced by the average velocity of the fluid.
The Annubar average velocity probe has multiple pairs of pressure tapping holes, arranged in a certain standard in the high and low-pressure zones, making it possible to accurately measure the average flow rate.
Annubar Flow Meter Calculation
The flow calculation formula of the uniform velocity tube flowmeter is derived from the Bernoulli equation and the continuity equation:
Qv=α﹒ ε﹒ (π/4)﹒ D2﹒ (2P/ρ1)0.5 Qm=α﹒ ε﹒ (π/4)﹒ D2﹒ (2?P﹒ρ1)0.5 Among them: Qv: volume flow Qm: mass flow α: Sensor structure coefficient △P: Differential pressure value ε: fluid expansion coefficient ρ: Density under fluid conditions ε: fluid expansion coefficient For incompressible fluid ε=1, for compressible body ε<1. If D, △P, and ρ1 in the formula all use SI units, the unit of QV is M3∕S. The unit of Qm is ㎏∕S.
The annubar flowmeter is a commonly used type of flowmeter. It is a new type of differential pressure flow detection component, developed based on the principle of pitot tube velocity measurement.
It has the advantages of stable performance, flexible use and high reliability.
1. Connect the signal cable and power cable;
2, open the import and export valves, the inlet and outlet valves must be consistent
3. Open the stainless steel three-valve balance valve, slowly open the high-low pressure end of the orifice plate, and close the stainless steel three-valve balance valve, after the fluid passes through the flowmeter.
(1) The straight pipe sections before and after the throttle piece must be straight, and must not be visible to the naked eye.
(2) The straight pipe section used for installing the throttle piece should be smooth. If it is not smooth, the flow coefficient should be multiplied by the roughness correction sparse.
(3) In order to ensure the flow of the fluid, a fully developed turbulent velocity distribution is formed in the 1D before the throttle. And the distribution is made into a uniform axisymmetric shape, so:
1). The straight pipe section must be round. And the roundness of the 2D range of the throttle is very strict and has a certain roundness index.
Specific measurement method:
(A) On the OD, D/2, D, 2D 4 vertical pipe sections of the throttle, measure the inner diameter of the four pipes, at least equal to each other with an equal angular distance, and take the average value D.
The difference between the measured value of internal diameter, and the average value shall not exceed ±0.3%.
(B) After the throttle element, 8 inner diameter single measured values are measured, by the above method at the OD and 2D positions. And any single measured value is compared with D. And the large deviation of zui must not exceed ±2%.
2). Before and after the throttle element, a straight pipe section of sufficient length is required.
The length of the straight pipe section which is long enough. And the form of the local resistance part. Before the throttle element are related to the diameter ratio β.
(4) The length of the straight pipe section between the upstream side of the throttle member, the resistance member and the second resistance member may be 1/2 of the listed value. According to the form of the second resistance member, and β = 0.7 (regardless of the actual β value)
(5) When the upstream side of the throttle member is an open space, or a large container with a diameter ≥ 2D, the open space or the straight pipe length, between the large container and the throttle member shall not be less than 30D (15D).
If there are other local resistance members, between the throttle member and the open space or the large container. The open space is from the open space to the length of the small straight pipe section 1 provided, between the throttle member and the local resistance member.
The total length of the straight pipe section between the throttle pieces shall not be less than 30D (15D).
Annubar flow meter is sometimes referred to as Averaging pilots and contains multiple pressure tappings to ‘average’ the flow; this is to try to compensate for a non-ideal flow profile. The averaging pitot tube is inserted across the pipe as shown below. One side of the bar has pressure taps facing the flowing fluid that are coupled into an “averaging” chamber that measures the total (i.e. static + dynamic) pressure of the fluid.
There are numerous types of flow meters depending upon the application, the specific fluid, and the construction, including materials, of the flow meter. The 5 basic classifications of flow meters include: 1. Differential Pressure Flow Meters Differential pressure flow meters measure the differential pressure across an orifice where flow is directly related to the square root of the differential pressure produced. There are also primary and secondary elements in differential flow meters. The primary element produces a change in kinetic energy using either flow nozzle, pitot tube, orifice plate, or venturi flow meters. The secondary element measures the differential pressure and provides the signal. Differential pressure meters represent around 1/5 of all flowmeters around the world. They are commonly used in the oil & gas industry, along with HVAC, beverage, water, pharma, mining, paper, and chemical applications.
Extended reading: What Is A Venturi Flow Meter? 2. Positive Displacement Flow Meters Positive displacement (PD) flow meters measure the volume filled with fluid, deliver it ahead and fill it again, which calculates the amount of fluid transferred. It measures the actual flow of any fluid while all other types of flow meters measure some other parameter and convert the values into flowrate. In PD flow meters, the output is directly related to the volume passing through the flow meter. PD flowmeters include piston meters, oval-gear meters, nutating disk meters, rotary vane type meters, etc. Positive displacement flow meters are known for their accuracy. They are commonly used in the transfer of oils and fluids, like gasoline, hydraulic fluids as well as in-home use for water and gas applications. 3. Velocity Flow Meters Velocity meters measure the velocity of the stream to calculate the volumetric flow rate. These are less sensitive when the Reynolds number of fluid is higher than 10000. Velocity flow meters include turbine, paddlewheel, vortex shedding, electromagnetic, and sonic/ultrasonic flow meters. 4. Mass Flow Meters Mass flow meters are more effective in mass-related processes as they measure the force that results from the acceleration of the mass. More specifically, the force is measured as the mass moving per unit of time, instead of the volume per unit of time. Mass flow meters include Coriolis mass meters and thermal dispersion meters. Typical applications for mass flow meters are tied to chemical processes. In addition to the chemical and gas industries, typical industries using mass meters include pharma, power, mining, and wastewater. 5. Open Channel Flow Meters Measurement of liquid in open channels includes v-notch, weirs, and flumes. These dam-like structures, or overflows, allow for a limited or concentrated free-flow of liquids based on the unique shape and size of the structure. This type of flow meter allows for a reading of the flow rate to be calculated. Common applications of open channel meters include free-flowing liquids like streams, rivers, irrigation channels, and sewer/wastewater systems.
The biggest difference between an annubar and a pitot tube is that an annubar takes multiple samples across a section of a pipe or duct. In this way, the annubar averages the differential pressures encountered accounting for variations in flow across the section. A pitot tube will give a similar reading if the tip is located at a point in the pipe cross section where the flowing velocity is close to the average velocity.
A wide variety of Annubar Flow Meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Annubar Flow Meter, located in China. The top supplying country is China (Mainland), which supply 100% of the Annubar Flow Meter respectively.
Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Annubar Flow Meter products are most popular in Domestic Market, Southeast Asia, and Mid East.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Handheld ultrasonic flow meter realizes the non-contact measurement of liquid flow. Also often referred to as Portable Clamp-On Ultrasonic Flow Meter for Liquids.
Handheld Ultrasonic Flow Meter ( Model:2000H) has been successfully applied to measurement work in various industries. The measuring range is 20-6000mm (0.5-20 inches). A non-contact measurement method is adopted. Flexible operation and easy to carry. Conductive or non-conductive, corrosive or non-corrosive liquids can be measured. Various fluids: water, pure water, sewage, sea water, chemical fluids, river water, fuel Oil etc. can be measured.
Handheld Ultrasonic Flow Meter Reference price: USD 470.00/pc
Sino-Inst offers a variety of Ultrasonic flow meters for flow measurement. If you have any questions, please contact our sales engineers.
Handheld Ultrasonic Flow Meter is a commonly used clamp-on ultrasonic flow meter.
Clamp-on ultrasonic flow meter mainly refers to the installation form of the ultrasonic sensor. The sensor clamp is fixed outside the pipe.
Clamp-on ultrasonic flow meters can be handheld, wall-mounted, and portable with printing functions depending on the host. You can select different hosts according to your measurement needs.
Typical Applications of Handheld Ultrasonic Flow Meter
The handheld ultrasonic flow meter is mainly used for flow measurement of industrial pipeline fluids, and is widely used in environmental protection, petrochemical, metallurgy, paper-making, food, pharmaceutical and other industries.
The SI-2000H ultrasonic flow meter is ideal for flow testing during test and balance.
It is also useful for temporary flow monitoring, in existing systems to establish baseline demand data.
Water (hot water, cooling water, potable water, seawater, etc.)
Pipeline leak detection, inspection, tracking, and collection
Of course, if you are allowed to install a pipe segment flowmeter in your measurement pipeline, you may consider the use of an electromagnetic flowmeter. Electromagnetic flowmeters will provide more accurate measurements.
Ultrasonic flowmeter is especially suitable for measuring large-diameter liquid pipelines because of its measuring principle. It has a large number of applications in urban water supply and sewage treatment industries. And the measurement results are very good.
Water is often used as circulating water in industrial production. That is, the water that can be recycled as the carrier of heat in the production process of the enterprise. The beginning is a circulating pool with a cooling system, and the end is the heat exchange equipment of the production workshop.
There are many types and quantities of heat exchange equipment in biochemical companies, so the circulating water pipelines are complicated. If a flow meter is installed on each circulating water pipeline, it will be a considerable expense.
Therefore, most production companies do not install flow meters for circulating water pipes in the initial stage of design to reduce investment costs. However, in order to grasp the operating efficiency of all heat exchange equipment in the production process, it is necessary to detect the flow rate of the circulation in the pipeline. .
An ultrasonic flowmeter can be used as a standard meter to transmit the value. It not only protects water resources rationally and scientifically, but also quantifies the paid use of water resources to a great extent. At the same time, it also protects the interests of both parties who use the water and reduces the cost of enterprise inspection. This makes periodic verification of large-caliber water flow meters a reality.
The measurement accuracy of the ultrasonic flowmeter is very high. Almost no interference from various parameters of the measured medium. In particular, it can solve the flow measurement problems of strong corrosive, non-conductive, radioactive and flammable and explosive media that other instruments cannot. So what causes the inaccurate measurement of the ultrasonic flowmeter? The following are the reasons for the inaccurate measurement: The influence of pipeline parameter equipment on the accuracy of ultrasonic flowmeter measurement. The influence of upstream and downstream straight pipes on the accuracy of ultrasonic flowmeter measurement. The influence of couplant on measurement accuracy. The influence of the installation position of the ultrasonic flowmeter transducer on the measurement accuracy.
Common types of ultrasonic flow meters ①According to the measurement principle. Ultrasonic flowmeters are now the most commonly used methods for measuring flow rates are the propagation velocity difference method ultrasonic flowmeter and the Doppler frequency shift method ultrasonic flowmeter. The propagation velocity difference method can be divided into three types: time difference method, phase difference method and acoustic cycle frequency difference. ②According to the installation method of the transducer. There are two types of ultrasonic flowmeters: fixed ultrasonic flowmeter and portable ultrasonic flowmeter. The transducer installation methods of the fixed ultrasonic flowmeter can be divided into: A tube-segment ultrasonic flowmeter integrating transducer and measuring tube; The external clamp ultrasonic flowmeter with the transducer clamped on the outer wall of the measuring tube; Plug-in ultrasonic flowmeter in which the transducer passes through the outer wall of the pipe and directly contacts the medium; The transducer is attached to the inner wall of the large pipeline ultrasonic flowmeter. ③According to the channel of propagation. Ultrasonic flow meters can be divided into single-channel ultrasonic flow meters and multi-channel ultrasonic flow meters. Among them, multi-channel can be divided into two-channel ultrasonic flowmeter, ultrasonic flowmeter, four-channel and eight-channel ultrasonic flowmeter. Extended Reading: Inline Ultrasonic Flow Meter
Ultrasonic flowmeters use sound waves to determine the velocity of a fluid flowing in a pipe. At no flow conditions, the frequencies of an ultrasonic wave transmitted into a pipe, and its reflections from the fluid are the same. Under flowing conditions, the frequency of the reflected wave is different, due to the Doppler effect. When the fluid moves faster, the frequency shift increases linearly. The transmitter processes signals from the transmitted wave, and its reflections to determine the flow rate. Extended reading: Ultrasonic flow detectors types
Portable Ultrasonic Flow Meter is a handheld ultrasonic flow meter. The clamp-on sensor is used to measure liquid flow in industrial pipelines.
The portable ultrasonic flowmeter uses a non-invasive sensor to measure liquid flow. The installation process is extremely simple. There is no need to destroy the pipeline during the measurement process and no need to stop production. The sensor is not in contact with the measured medium. Battery powered, small size, light weight and easy to carry. Realize the real sense of mobile flow measurement, online detection, is a real sense of portable ultrasonic flowmeter.
Generally speaking, mass flow meters are relatively accurate. Of course, the accuracy of the flowmeter still depends on the site conditions. If the measurement of temperature and pressure is not very difficult, the accuracy of the flowmeter must be relatively high. In addition, to ensure the accuracy of the flowmeter, correct installation and use are also very important.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc ullamcorper condimentum ultrices. Cras euismod ornare laoreet. Quisque vel efficitur quam, eu molestie odio.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc ullamcorper condimentum ultrices. Cras euismod ornare laoreet. Quisque vel efficitur quam, eu molestie odio.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc ullamcorper condimentum ultrices. Cras euismod ornare laoreet. Quisque vel efficitur quam, eu molestie odio.
What is Clamp on Water Flow Meter? Clamp on Water Flow Meter is also known as the clamp-on ultrasonic flowmeter. Using an ultrasonic flowmeter to measure water flow rate is…
What is BTU Meter for Chilled Water? The BTU Meter for Chilled Water accurately measures the thermal energy consumed by chilled water in British Thermal Units (BTU). This is a…
Water flow measurement is common in both industry and life. You may often hear about the use of electromagnetic flowmeters to measure wastewater. The clamp-on ultrasonic flowmeter measures large water…
Mechanical water flow meters refer to a type of flow meter suitable for clean water processes or applications. The working principle of a mechanical water flow meter is to measure…
What is an irrigation flow meter? The irrigation flow meter is a flow meter designed for agricultural irrigation water counting. Agriculture, horticulture, etc. require water for irrigation. And water is…
What does a residential water meter look like? A residential water meter is a legal meter for measuring water consumption in residential communities, residential buildings, bungalows, and other places. What…
The ultrasonic water flow meter is a meter that measures water flow by detecting the effect of water flow on ultrasonic beams (or ultrasonic pulses). The more commonly used methods…
Application What is a Chilled Water Flow Meter? A chilled water flow meter refers to a flow meter that can be used to measure low-temperature water. Common chilled water flow…
Featured inline water flow meters Strap on flow meter X3 External clamp-on flow sensor. Easy to install. Suitable for measuring pipe diameter Φ9.53~Φ90. Ultrasonic Water Meter for Residential Water DN15-DN40,…
Hot Water Flow Meters Improve Heating-Boiler System Hot water flow meters refer to flow meters that can measure and indicate the flow of high temperature water. Hot water is widely…
Upstream and Downstream Flow Straight Pipe Requirements refer to the length of straight pipe before and after the installation location of the flowmeter. In order to ensure that the fluid…
Flow Meter for Slurry Application Slurry is a product of domestic sewage and industrial wastewater treatment. Slurry consists of solid impurities, a slurry of suspended substances. The main characteristic of…
Sino-Inst, Manufacuturer for Handheld Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of DN 15—6000mm. It can measure even liquids such as water, sea water, oil, and slurry.
Sino-Inst’s Handheld Ultrasonic Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
Request a Quote
Please enable JavaScript in your browser to submit the form
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.