Quickly Set Level Monitoring System for Industrial Holding Tanks

Posted on November 10, 2023 by KimGuo11

Holding tank level indicators can help us monitor and control liquid levels. Whether it is a fuel tank on a truck, a fire water storage tank, an underground sewage storage tank, or even a marine storage tank, etc. Replacing manual inspection with automated Level Monitoring System can be faster and more accurate.

RFQ

Disassemble the system

Before setting up a Level Monitoring System for Industrial Holding Tanks, we need to first understand what should be included in the system.
Based on our many years of experience in level monitoring services at Sino-Inst, we have simplified the entire system from complexity. Simply put, the system can be divided into two parts: Level sensor + Tank level Monitor.

These two parts are both independent and interrelated. You can choose different types of level sensors and Tank level Monitors according to actual needs. Then use the connection key, which is our signal output (such as RS485, 4-20mA) to make them work synchronously.

Exploring Advanced Level Monitoring Technologies

Part 1: Level Sensor

We have analyzed the working principles, advantages and disadvantages of various level sensors in detail in our previous blog. You can learn more about it. Here, we briefly introduce a few commonly used ones:

External ultrasonic level sensor: It can be simply pasted on the bottom of the tank for liquid level measurement. Suitable for tanks less than 2 meters. Like a truck fuel tank.
Capacitive level sensor: suitable for liquid level measurement under various special conditions such as high pressure, high temperature, extremely low temperature, etc.
Ultrasonic level sensor: low-cost non-contact measurement. You can choose anti-corrosion and explosion-proof materials.
Radar level sensor: wider application range. High measurement accuracy. Can be applied to tanks with a measuring range of 30m.
Magnetostrictive level sensor: the most accurate level sensor. Can be customized as an oil level interface sensor. It can also be customized to measure temperature at the same time.
Hydrostatic pressure level sensor: enables low-cost, large-range measurement.
Float level sensor: The measurement principle is the simplest.

Part 2: Monitor System

We generally configure paperless liquid level recorders for users to measure and record on-site liquid level signals. It can even perform alarm, signal output, printing and other functions according to user needs.

For example, some of our common models:

7620/7620R Series LCD Volume Display Regulator/ Recorder is specifically designed for industrial on-site regular and irregular canned liquid, volume and mass conversion.

The device has empowered by the surface mounting technology, featuring the design of multiple-layered protection and isolation, with a strong anti-interference capability and high reliability. It has used the embedded operating system with USB data dump function. The data storage time could reach up to 720 days. By using U disk and host computer analysis software, one could call and view the historic curve of process variants and relevant historic data from time to time. It also could match with various liquid sensors, such as ultrasonic liquid level meter. The device has sound anti-theft and anti-damage and other features.

T710 series paperless recorder adopts the new large-scale integrated circuits to realize the reliable protection and robust anti-jamming for input, output, power supply and signals. The recorder can achieve eight-channel universal signal input (the configurable and optional inputs include standard voltage, standard current, thermocouple, thermal resistance and millivolt), four-channel alarm output and one feed output. It has the RS485 communication port, Ethernet port, micro-printer port, USB device port and SD card socket. The recorder enjoys a Powerful display function, which can achieve real-time graphic display, historical graphic recalling, bar graph display and alarm status display.

Universal input of NHR-8100/8700 series color paperless recorder (capable of inputting by means of configuration: standard voltage, standard current, thermocouple, thermal resistance, millivolt, etc.). It can be equipped with 18-channel alarm output or 12 -channel analog transmitting output, RS232/485 communication interface, Ethernet interface, mini-printer interface, USB interface and SD card socket; can provide sensor distribution; is equipped with powerful display function, real-time curve display, historical curve retrospection, bar graph display, alarm list display, etc. The meter is of high cost effectiveness due to its humanized design, perfect function, reliable hardware quality and exquisite craftsmanship.

Other requirements support customization.

Part 3: Featured Products

**ULT-100 Explosion-proof** **Ultrasonic Level Indicator**

**LT series Digital Display Magnetostrictive liquid level sensor**

**Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank**

**HS-ULC Ultrasonic Level Switch-External Mounted**

**Universal Input-Paperless Recorder R7100**

Steps to quickly build an industrial holding tank level indicator

Let’s say you only have the tank now. There is no liquid level sensor or system.

Understand the basic parameters of the tank. For example, the shape, height, width, wall thickness, pressure, and temperature of the tank. Is there stirring inside the tank?

Understand the condition of the media. Is the medium corrosive? Will there be evaporation?
Be clear about your needs. For example: You want to achieve synchronous detection of liquid levels in 6 storage tanks.
Choose appropriate level sensors and tank level monitors. Make purchases based on the parameters and needs you have mastered above.
Install the liquid level sensor. (For specific installation steps and installation details, refer to the manufacturer’s recommendations)
Signal connection. Output the signal line of the level sensor to the Tank level Monitor system. For example, the access of 4-20mA signal line.
Calibration and testing. After setup and testing, you can easily monitor the liquid level of industrial holding tanks.

If you already have a holding tank level sensor, just select the applicable level monitors based on the output signals supported by the level sensor.

How to check Level in Underground Tanks? What Tank Level Indicators to Choose?

Posted on November 1, 2023 by KimGuo11

Underground tanks refer to tanks installed below the ground for storing gas or liquid. So is measuring the level of an underground tank the same as measuring the level of a tank above ground? The answer is no. Most underground tanks come pre-assembled. Once installed, it will not change year after year. The most common ones are underground oil storage tanks at gas stations.

So how to measure the liquid level of underground tanks? What tank level indicators are available? Let’s take a look together.

RFQ

Underground tanks are generally installed pre-buried. After installation, it is difficult to make changes to the bottom, sides, etc. of the tank. Of course, underground tanks generally have reserved manholes, feed openings, discharge openings, etc. Some will also reserve installation locations specifically for level meters.

Based on our experience, underground tank level indicators can be divided into two categories: contact and non-contact. For example, ultrasonic level meter and radar level meter are commonly used non-contact level indicators. For example, Hydrostatic Level Sensor, float level sensor, and magnetostrictive level meter are commonly used contact level indicators.

The specific choice needs to be determined based on the conditions of the medium in the storage tank. The second half of our blog will explain this with examples.

Below are the various underground tank level indicators we supply at Sino-Inst. You can choose to delve deeper into the measurement parameters:

Available underground tanks level indicators

**Radar Water Level Sensor 0.05m～35m ~70m~120m**

**ULT-100A Ultrasonic Level Transducer**

**SIRD-702 GWR Corrosive Liquid Chemical Level Sensor**

**Pressure Guided Submersible Level Transmitter**

OK Next, we will use our actual cases to hand over the choice of underground tank level indicators for you.

Gas station underground oil storage tanks

We all know that most diesel and gasoline at gas stations are stored in underground tanks. The oil level needs to be accurately monitored in real time. Including when feeding and discharging materials. The accuracy of this tank level indicator needs to be very high. Because it is directly linked to money.

So based on our experience, in this case we would recommend users to choose Magnetostrictive liquid level sensor.

Mainly because Magnetostrictive liquid level sensor can meet the following characteristics:

Large range: 0.2m～25m;
Meet the explosion-proof requirements of gas stations. Explosion-proof level: ExdⅡCT6 Gb;
High precision. Magnetostrictive level transmitter has a maximum accuracy of 1mm;
Can meet high temperature, high pressure and other parameter customization. -40 ℃ ~ +350 ℃, 10MPa;
The installation size can be customized. According to the installation requirements of underground oil storage tanks, threaded or flange installation can be configured.
Support signal output, 4~20mA, 0~5V, 0~10V, HART, RS-485. It is convenient for real-time monitoring of oil level in the office.
The Magnetostrictive level transmitter can also be customized according to needs: interface output (measurement of oil-water interface), and simultaneous output of temperature and liquid level (up to 8 RTD temperature sensors can be installed for temperature detection).

Of course, if the measurement accuracy requirements are not high. Then it is also possible to choose explosion-proof ultrasonic level meter.

Underground sewage storage tanks

Here is an example of a measurement taken by one of our users. Their 2 storage tanks are underground tanks for sewage.

The 2 storage tanks are sewer septic tanks;
The on-site storage tanks are underground storage tanks; horizontal tanks; the heights are 1800mm and 1500mm respectively;
The tank has a reserved manhole of Φ450mm.

Comprehensive consideration of measurement parameters and installation dimensions. We configure anti-corrosion antennas for the optional 80G radar level meter. Customized installation dimensions for reserved manhole installation in the tank.

Chemical corrosive raw material storage tanks

The capacity of underground storage tanks in the chemical industry can range from thousands to millions of gallons. For example, some large chemical plants may have underground storage tanks with a capacity of 300,000 gallons for storing raw materials such as ethylene and benzene.

This type of Underground Tanks level measurement will be more complicated than the above two. We need to comprehensively consider many factors, especially the characteristics of the medium:

The size and shape of the tank.
The temperature, pressure, viscosity, corrosiveness, etc. of the medium.
Is there stirring in the tank?
The installation position of the inlet and outlet, etc.;

Here we discuss the level indicators available for corrosive media. Generally there are radar level meters and guided wave radar level meters. Or customize an anti-corrosion input level sensor made of PTFE.

The following is also a case of measurement by one of our customers. The measuring medium is: a metal tank containing 98% sulfuric acid. The tank is large and comes with a picture of the level transmitter installed.

We equipped him with an antenna made of PTFE anti-corrosion material to meet the measurement requirements:

Radar level meter
Model: FMW11
80G
Measuring the level in a sulfuric acid tank
PTFE antenna,
Temperature resistance: -40-80℃,
Pressure: -0.1-0.3MPa
Mounting Dimensions: 1 1/2″ NPT PTFE Coated
Digital display with measurement and programming
24VDC
4-20mA (two wires) +HART
1/2″ NPT Head Electrical Connections

FAQ

To check the water level in your underground tank, there are several methods you can use:

Manual measurement: Use a dipstick or water measuring rope to lower it into the water tank to directly measure the water level.
Install a water level sensor: Install a float or pressure water level sensor in the water tank, which can monitor the water level in real time.
Electronic water level indicator: uses an electronic probe to monitor the water level and displays the water level height through a digital display.
Ultrasonic water level meter: Ultrasonic waves are emitted from the top of the water tank and the water level height is calculated based on its reflection time.
Radar water level gauge: Using the principle of radar waves, the signal is also emitted from the top of the water tank and the reflection time is measured to determine the water level height.

The best water level indicator depends on the specific application scenario and needs, such as accuracy requirements, installation environment, maintenance costs and budget. The more commonly used ones at present are:

Ultrasonic water level meter: non-contact measurement, less maintenance, suitable for most application scenarios.
Radar water level gauge: It is also non-contact and suitable for extreme working conditions, such as high temperature, high pressure, corrosive media and other environments.
Float water level switch: simple and reliable, low cost, but average accuracy.
Capacitive water level sensor: high accuracy, but relatively complex to install and expensive.

The main difference between a water level indicator and a water level gauge is their function and usage:

Water level indicator (Level Indicator) usually refers to a visual or electronic display of the water level inside the container. It can be a simple window or a complex electronic device that converts water level information into readable data.

Water level gauge (Level Gauge) refers more to a measuring tool or device, which is used to accurately measure and read water level. Water level gauges often provide more detailed water level data, such as precise readings in millimeters or inches.

Simply put, water level indicators tend to visually display water level status, while water level gauges provide more precise measurements. In actual industrial applications, the water level indicator may be part of the water level gauge for visual display, while the water level gauge is part of the entire measurement system.

Enhancing Marine Tank Monitoring with Advanced Marine Water Tank Level Sensors

Posted on October 23, 2023 by KimGuo11

Marine Water Tank Level Sensors have always been an important part of the marine tank monitoring system. There are many places on ships where water levels need to be detected. Such as fuel, fresh water and sewage storage tanks. The liquids in these tanks are a critical resource for ship operations and require constant monitoring to ensure supply and appropriate storage. For example, the water level in the water storage tanks and pipelines of the fire protection system also needs to be monitored to ensure that there is sufficient water supply in an emergency. Even equipment that handles seawater, sewage or other waste liquids needs to monitor water levels to ensure proper operation of the equipment.

RFQ

What are Marine Water Tank Level Sensors?

Marine Water Tank Level Sensors are specially designed to measure the water level inside ships. For example, in fresh and drinking water as well as gray water or waste water storage tanks on ships, Marine Water Tank Level Sensors can detect liquid levels from very low to very high.

Marine Water Tank Level Sensors generally use capacitive, hydrostatic, or radar measurement technologies. Convert the water level into an analog signal and then transmit it to the marine tank monitoring system. To effectively monitor, record and control the liquid level in the tank. And the sensors are often used in conjunction with alarm systems to alert users when the level in the tank reaches a certain level.

marine tank monitoring system

Marine Tank Monitoring System is a system used on ships to monitor the liquid levels of various storage tanks (such as oil, fresh water, sewage, etc.) in real time. It is an important part of ensuring the safe and efficient operation of ships.

In addition to monitoring water levels, other liquid levels also need to be monitored on ships. The installation of liquid level measurement and alarm systems on oil tankers and chemical ships is to monitor cargo tanks and other oil and water tanks. On the one hand, by measuring the liquid level, the crew can keep track of the various conditions of the ship during navigation to ensure the best loading of the ship. More importantly, it is to prevent the liquid level from being too high and causing overflow. To avoid causing fires and contaminating the surrounding marine environment.

The following are some basic features and components of the system:

Function:
- Monitor the liquid level in the storage tank in real time.
- Record and analyze liquid level data.
- Sounds an alarm when the liquid level exceeds the preset range.
- Sometimes other parameters such as temperature and pressure of the storage tank can also be monitored.
Sensor:
- The liquid level sensor is the core component and can be float type, capacitive type, radar type, pressure type, etc.
- As needed, it may also include temperature sensors, pressure sensors, etc.
Display and control terminal:
- Usually located in the control room or bridge of the ship, it is used to display the liquid level information of each storage tank in real time.
- Allows operators to set alarm thresholds, view historical data, and more.
Correspondence:
- Communication is required between the sensors and control terminals within the system, which may be wired (such as RS485, Ethernet) or wireless.
- In more advanced systems, remote monitoring capabilities may also be provided, allowing a land-based management center or other vessel to obtain data in real time.
Data processing and storage:
- Systems will typically include a data processing unit to receive, process and store data collected from sensors.
- Facilitate subsequent analysis, statistics and reporting.
Power and backup:
- Considering the particularity of ship power supply, the system usually has its own power module with battery backup to ensure that it can still work normally in the event of a short-term power interruption.
Alarm function:
- When the liquid level exceeds the preset safety range, the system will automatically send out an audible and visual alarm to remind the operator to handle it in time.

Marine Water Tank Level Sensors is important for better tank monitor

Through the above introduction, you should have understood that Marine Water Tank Level Sensors are important for better tank monitor.

Equipment for monitoring the level of liquids in ship water tanks (such as fresh water, sewage, drinking water, etc.). These sensors play a vital role in the operation and management of ships.

For example, the simplest thing is to ensure the safety of ships.

Sudden changes in tank level can be a sign of a leak or other malfunction on your vessel. Through real-time monitoring, potential problems can be discovered and dealt with in time to prevent accidents.

OK So if we want to configure Water Tank Level Sensors for our or our customers’ ships, which one should we choose? What types of Marine Water Tank Level Sensors are there?

Types of Marine Tank Level Sensors

Based on our many years of experience in liquid level measurement services at Sino-Inst, the level sensors commonly used for ship liquid level monitoring are as follows:

When the liquid level rises or falls, the float also rises or falls. Through the movement of the float on the vertical guide rod, the liquid level information can be output into an electrical signal.

Advantages: simple structure, low cost and high reliability.
Disadvantages: It may be interfered by sediments or viscous liquids, and is not suitable for use in high-temperature or high-pressure liquids.

The sensor is submerged in the liquid and measures the liquid level based on the water pressure generated by the liquid column. The higher the liquid height, the greater the water pressure.

Advantages: High accuracy, not affected by liquid properties (such as color, transparency), suitable for deep water storage tanks.
Disadvantages: Requires regular calibration and maintenance, may be affected by high temperatures and corrosive liquids.

The sensor acts as a part of a capacitor, and changes in the liquid level will cause changes in the capacitance value, thereby measuring the liquid level.

Advantages: Fast response and can be used with many types of liquids, including corrosive and viscous liquids.
Disadvantages: May be affected by sediment or other impurities and require periodic cleaning and calibration.

The sensor emits microwave or millimeter wave signals that are reflected back by the liquid surface. The liquid level height is calculated based on the time difference between the transmitted and received signals.

Advantages: High accuracy, not affected by liquid properties or sediments. Contactless design reduces maintenance requirements.
Disadvantages: Relatively high cost, installation and calibration may be complicated.

**SI-U02 Multi-Point Liquid Level Float Switch**

**SI-PCM261 Submersible Pressure Transducer**

**SMT3151TR Submersible Level Transmitter**

How to Choose Level Sensors for Marine Tanks?

Choosing a suitable marine liquid level meter requires comprehensive consideration based on practical applications and various factors to ensure that it can not only meet the measurement needs, but also have high cost performance and reliability.

Here are a few points to consider based on our experience:

Liquid properties:
- Corrosiveness: For highly corrosive liquids, corrosion-resistant materials and sensor types need to be selected.
- Viscosity: Some sensors may be interfered by highly viscous liquids or sediments.
- Temperature and Pressure: The operating temperature and pressure of the liquid may place specific requirements on sensor materials and design.
Measuring range: The measuring range of the liquid level gauge needs to be clarified to ensure that it is suitable for the depth of the tank or the variation range of the liquid level.
Tank shape and installation location: The shape of the tank and installation space may limit the type of level sensor. For example, the tank may only have an external level sensor option.
Accuracy requirements: Determine the required measurement accuracy based on the requirements of the actual application.
Installation and maintenance:
- Ease of installation: Some level gauges may require special tools or expertise to install.
- Maintenance needs: Consider whether the sensor is easy to clean, calibrate, or replace.
Output and communication: Select the appropriate output interface (such as 4-20mA, RS485, Modbus, etc.) according to the ship’s monitoring system or other equipment.
Power requirements: Consider whether the ship’s power supply and the level gauge’s power requirements match.
Cost: In addition to the cost of the equipment itself, the total cost of installation, maintenance, and replacement should also be considered.
Environmental factors: Consider the environment the ship is in, such as whether there is a lot of salt spray, moisture, vibration, etc., and choose a liquid level gauge that can work stably under these conditions.
Additional functions: such as whether remote monitoring function is required, whether there is a built-in temperature or pressure sensor, whether there is an alarm function, etc.
Suppliers and brands: Choose suppliers or brands with good reputation and good after-sales service.

FAQ

You can use a specially designed liquid level sensor to monitor the liquid level of your water tank in real time.

These sensors are usually installed at the bottom or top of the water tank and connected to a display or monitoring system so that you can visually view the water level.

How to install the Marine Water Tank Sensor?

Installing a marine water tank sensor is a relatively specialized process that requires accuracy and safety. Here’s a basic guide we’ve put together with the installation steps:

Choose a suitable location: Choose a location close to the center of the water tank for easy later maintenance.
Cleaning and pre-treatment: Remove impurities and ensure the tank level is below the predetermined level if drilling is required.
Drilling and fixing: Drill holes and fix the sensor according to the sensor specifications to ensure a seal.
Connect the wires to the output: Connect the sensor output wire to the display and make sure the connection is waterproof.
Debugging and calibration: Turn on the power and calibrate the sensor according to the guide.
Safety and Protection: Provides protection for sensors and ensures wires are securely fastened.
Regular inspection and maintenance: Check sensor operation and clean or calibrate as needed.

Installing marine water tank sensors requires meticulous work and specialized knowledge. If you’re not sure how to proceed, it’s best to ask a professional or follow the manufacturer’s installation guide.

Shopping the Right High Temperature Level Sensor: 80℃~1000℃

Posted on October 21, 2023 by KimGuo11

High temperature level sensors refer to Level instruments for high temperature applications. High temperature level sensors purchase special materials or structures, such as 316 stainless steel, PTFE materials, etc. Suitable for measurement of high-temperature storage tanks such as water, oil, diesel, or other chemical liquids. Then output 4-20mA/0-5V/1-5V/0-10V and other signals for liquid level monitoring. The temperature range: 80℃~150℃~250℃~350℃~450℃~800℃~1000℃. The measurement range can also meet 0~20m~30m~60, etc.

RFQ

So which High temperature level sensor should you choose? This needs to be chosen based on your actual measurement parameters. Next, let’s analyze it together.

Featured High Temperature Level Sensors

**SIRD-806 Radar High Temperature Level Sensor**

**SIRD-705 GWR Level Sensor for High Temperature & High Pressure**

**Differential pressure(DP) level transmitter**

Different types of high temperature level sensors

There are many types of level sensors. Different types of liquid level gauges can withstand different temperatures. In order to save you time in purchasing, we have compiled here the high temperature parameters that various level meters can withstand.

Types	Maximum Temperature Parameter	Applicable Environment
Ultrasonic level sensor	Ultrasonic level meters made of conventional materials can measure media at 60°C. Made of polytetrafluoroethylene, it can reach 80℃.	Suitable for liquids. Not ideal for highly turbulent surfaces.
Hydrostatic Pressure level sensor	The conventional configuration is up to 80℃, and the temperature can be customized up to 300℃.	Ideal for liquids in closed tanks.
Differential Pressure level transmitter	The capillary tube of the double flange (differential pressure) liquid level transmitter should have thermal insulation measures. In order to meet the temperature requirements of the measurement medium during the selection process, the capillary filling liquid is divided into low temperature (-40~149℃) filling liquid and high temperature (15~315℃) filling liquid.	Suitable for various fluids; measures the difference in pressure. Open storage tanks, closed storage tanks, and pressurized storage tanks can all be measured.
Capacitive level sensor	-50-250℃; By adding heat dissipation components and changing the wetted material, you can customize high-temperature models of 200℃~800℃;	For detecting liquids and granules. Not suitable for highly conductive media.
Magnetic Float level sensor	-20℃~120℃~200℃ Max.	Used for liquid level detection in tanks.
Magnetostrictive level transmitter	-40°C-320°C	High precision, suitable for various fluids.
Guided Wave level sensor	-200～400℃	Works well in turbid, viscous, or foam-covered liquids.
Radar level meter	80℃ – 450℃ (for general radar sensors)	Suitable for both liquids and solids with varying surface conditions.
Custom High-Temperature Radar level meter	Specific to custom requirements. Can be customized to 600℃, 800℃, up to 1000℃. However, depending on the measurement environment, it may be necessary to configure cooling assistance, such as water, liquid nitrogen, etc.	For extreme temperature environments or specific industrial applications.

Of course, this summary is mainly based on the high-temperature level sensors produced and supplied by our Sino-Inst. The level sensor types and temperature parameters provided by other manufacturers are not necessarily the same.

Liquid level measurement under high temperature conditions is nothing more than three solutions.
The first is the replacement of materials.
The second is to add cooling structural parts.
The third is to add cooling assistance, such as water, liquid nitrogen, etc.

If you need to measure high-temperature liquid level and don’t know which level sensor to choose, you can contact our sales engineers for consultation.

High temperature water level measurement

The temperature of water, the boiling point of water at standard atmospheric pressure is 100°C. However, at higher pressures, such as in a pressure cooker or industrial boiler, the boiling point of water increases. In fact, under very high pressure environments, water can exist in a liquid state up to 374°C, which is its critical temperature. So while water has a standard boiling point of 100°C at 1 atmosphere of pressure, it can exist at higher temperatures at elevated pressures.

Accurate measurement of water levels under high temperature conditions is critical across multiple industries and applications. For example, power plants, geothermal energy production, industrial processes, and HVAC systems in large commercial buildings all require water level measurement at high temperatures. In order to meet this demand, a variety of liquid level sensors suitable for high-temperature environments are available on the market, such as ultrasonic sensors, capacitive sensors, and hydrostatic pressure sensors. Different sensors vary in the temperature range they can handle.

High temperature Oil level measurement

High-temperature oils are widely used in many industrial fields. From automotive manufacturing and oil and gas extraction to food processing and chemical industries, accurate measurement of oil levels is required.

In the automotive and aircraft industries, for example, high-temperature oils are used to lubricate and cool engines, transmissions and turbines.

In the oil and gas industry, high temperature oil levels need to be measured and monitored during refining and processing.

In food processing, high-temperature oils are often used for cooking and processing of food.

Commonly used liquid level measurement techniques:

Radar (guided wave) sensor: Measures oil level by using electromagnetic waves. Suitable for high temperature and high pressure environments, for example, it can handle temperatures from 80°C to 450°C. Even higher temperatures can be customized.
Hydrostatic Pressure Sensor: Measures fluid level based on the pressure generated by the oil column, ideal for closed tanks and containers.
Capacitive Sensor: Measures oil level by detecting changes in capacity and can handle temperatures from 80°C to 250°C.
Magnetostrictive level transmitter: -40°C-320°C, measurement accuracy can be as high as 0.01% FS.

When selecting a sensor suitable for high temperature oil level measurement, it is important to consider the actual application requirements such as temperature, pressure and oil properties, as well as the accuracy and reliability of the sensor.

High temperature Tank level measurement

Large tanks for storing and handling high-temperature liquids are common in numerous industrial sectors. These liquids may be petroleum, chemicals or other industrial feedstocks that require storage at high temperatures during production. Therefore, it becomes critical to accurately and reliably measure the level of these tanks.

Why is high temperature storage tank level measurement so critical?

Safety factors: High-temperature liquids may be flammable and may also be harmful to humans. Therefore, it is crucial to ensure that liquids do not spill or leak.
Economic benefits: Accurate liquid level measurement can ensure the continuity of the production process, avoid resource waste, and improve efficiency.

Then the liquid level measurement of high-temperature storage tanks is also more complicated. When selecting a suitable level measurement technology, a number of factors must be considered. Including the properties of the liquid, tank design, temperature and pressure, etc. It is important to ensure that the chosen technology provides accurate, reliable data and ensures the safety of personnel during all operations.

In high-temperature storage tank liquid level measurement, more people will choose: high-temperature radar, high-temperature guided wave radar, capacitance, magnetostriction, or differential pressure level meter.

In fact, many times, whether our level sensors can meet the liquid level measurement under high temperature will also be related to the pressure. For example, for radar level meters, high temperature measurement and high pressure measurement cannot be satisfied at the same time. Therefore, when you pay attention to your measured temperature, you also need to pay attention to the measured pressure. We at Sino-Inst, as a professional measurement supplier, also have pressure transmitters that meet high temperature measurement for you to choose from.

**SI-706 Combined Pressure and Temperature Sensor-Dual function**

**SI-512H High Temperature Pressure Sensor**

**High Frequency Dynamic Pressure Sensor**

Industrial applications of high temperature level sensors

High temperature liquid level sensors have a wide range of applications in industry. Here are some typical industrial application scenarios involving high-temperature fluids or materials:

Condensation tower: In the petroleum and chemical industries, condensation towers are used to cool and condense high-temperature gases. Accurate measurement of liquid levels in these towers ensures process continuity and prevents overfilling.
High-temperature molten salt: In solar heat collection and energy storage systems, high-temperature molten salt serves as the heat storage medium. Level sensors ensure that the molten salt is maintained at the proper level as it collects and releases heat.
High temperature aluminum liquid: In the smelting plant, liquid aluminum flows and is stored at high temperature. The use of high-temperature liquid level sensors can accurately measure the liquid level of liquid metal to ensure the stability of the casting process.
Molten glass: In glass manufacturing, raw materials are heated to extremely high temperatures until they melt. Accurate liquid level measurement is critical for glass molding and production.
High-temperature boilers: In the field of energy and power generation, water in high-temperature boilers needs to be heated under high pressure. A level sensor ensures that the water level does not get too low, preventing the boiler from overheating.
Chemical reactor: In some chemical processes, liquid reactants need to be heated at high temperatures. Accurately measuring the liquid levels in these reactors ensures the continuity and stability of chemical reactions.

Cooling Tower Level Sensors for Water Level Monitoring and Water Level Control

Posted on October 19, 2023 by KimGuo11

Cooling Tower Level Sensors refer to a type of level meter that can be used to measure the water level of cooling towers. Cooling Tower Level Sensors are an important part of the cooling tower’s cooling function. The cooling tower liquid level control system is mainly used to control the cooling water level in the cooling tower to maintain it within a reasonable range at all times. And it can realize real-time monitoring of liquid level and abnormal alarm function. To ensure that it will not cause high temperature failure or damage to the air compressor.

RFQ

Cooling Tower Water Basins

A cooling tower is a heat exchange system that brings air and water into direct contact to lower the water temperature.

To achieve this, water is continuously pumped to the top of the tower. There it flows through a series of baffles, mixing with air. And collected in the pool directly below the tower or the sump next to the tower. As heat and water escape from the tower through evaporation, additional water must be added to the system periodically.

Cooling towers come in many sizes, from rooftop systems to building size and beyond. A typical birdbath is open to the air and has a depth of 4 feet or less. Made of fiberglass, metal or concrete. The capacity is large enough to hold all the water in the system.

Cooling towers have two basic control systems, one for adding liquid to the pool. The other is used to turn the water recirculation system on or off. The main requirements of this application are to monitor the fluid level, automatically fill the basin and prevent the system from drying out.

At present, cooling towers generally use packed towers. If the tower liquid level is too high, it may easily cause:

The dehydration effect of the cooling tower is not good;
System pressure fluctuation increases;
The porcelain ring in the tower is easily broken;
Increase the workload of each water outlet.

Cooling tower water level monitoring and control system

If there is a new cooling tower now. A water level monitoring and control system needs to be established. The following design points can be considered. This is all based on our Sino-Inst’s years of experience in providing liquid level measurement services.

Identify goals and needs:
- Do you only need to monitor the liquid level, or do you also need to control the liquid level?
- What are your liquid level accuracy needs?
- Are there special temperature, pressure or fluid property requirements?
Choose the right Cooling Tower Level sensor:
- Based on the previous discussion, you might choose ultrasonic, Hydrostatic, or capacitive sensors as they are suitable for a wide range of applications and provide continuous level measurement. We discuss these techniques in detail below.
Installation location:
- Ensure the sensor is optimally positioned to accurately measure the entire liquid level range.
Output and communication:
- Choose a sensor with a standard output (e.g. 4-20 mA) that can be easily integrated into existing control systems.
- Consider using modern communication protocols such as Modbus or HART for remote access and debugging.
Level Control:
- If level control is required, you may choose to use a solenoid valve or pump to increase or decrease the liquid.
- Controllers can automatically turn these devices on or off based on set points, ensuring liquid levels remain within the desired range.
Security and Alarm:
- Set high and low level alarms to prevent the system from overloading or drying out.
- Consider using a redundant system to ensure backup level measurement in the event of a primary system failure.
System verification and calibration:
- After the system is started, a full range of liquid level measurements are taken to ensure that all components are functioning properly.
- Calibrate the sensor regularly to ensure measurement accuracy.
Maintenance and monitoring:
- Check all equipment regularly to ensure there is no wear or damage.
- Consider using a remote monitoring system to check fluid levels and system status from any location.

Hopefully this blueprint will provide a good starting point for your cooling tower level monitoring and control system. If you have any specific questions or need further guidance, please let me know!

cooling tower level sensors technology

Alright. Now you know the parameters of your cooling tower, including: pressure, temperature, liquid level range, installation location and installation dimensions, etc. Now you can start choosing the appropriate cooling tower level sensors.

Below are some recommended level measurement technologies that can be used for cooling tower water level measurement based on our experience at Sino-Inst.

Working principle: This sensor measures liquid level based on the pressure generated by the liquid column. The depth of a liquid is directly proportional to the pressure.

Advantage:
Good stability: not easily affected by environmental factors such as temperature, humidity, etc.
Easy installation: can be installed on the bottom or side of the container.
The price is more economical.

Application conditions:
Suitable for continuous liquid level measurement.
Best suited for environments that do not produce large amounts of foam or volatile liquids.

Working principle: Measure the distance of liquid by emitting ultrasonic pulses and receiving the signals reflected back.

Advantage:
Non-contact measurement: No direct contact with liquid is required, reducing wear and corrosion.
Strong adaptability: can measure a variety of liquid and solid materials.
Easy installation: generally installed on the top of the container.

Application conditions:

Not suitable for use in environments with large amounts of steam or foam as these may interfere with the signal.
The internal structure of the container should not be too complex to avoid affecting the reflection of ultrasonic waves.

Working principle: Use the capacitance change between the liquid and the sensor to measure the liquid level.

Advantage:
High sensitivity: Able to detect very small changes in liquid level.
Wide range of applications: It can measure liquids, solids or particles.
Long life: Since there are no moving parts, the durability is better.

Application conditions:
The dielectric constant of the liquid needs to be noted as it affects the measurement results.
May not be suitable for high viscosity or very sticky liquids.

Working principle: Microwave pulses are used to send and receive along the guide waveguide, and the reflection time between the microwave and the liquid surface is measured to obtain the liquid level information.

Advantage:
High Accuracy: Able to provide very accurate measurement results.
Adaptable: Can be used in extreme temperature and pressure conditions.
Suitable for a variety of media: Measures a variety of liquids, including those that are challenging, highly viscous, or have high vapor pressure.

Application conditions:
Due to cost considerations, they are often used in applications where accuracy is particularly high or where environmental conditions are harsh.
Use in liquids with large amounts of suspended solids should be avoided.

Of course, if you want to buy the Best cooling tower level sensor, you must choose it based on the actual cooling tower parameters.

If you don’t know how to choose, please provide the parameters to our Sino-Inst sales engineers. We will provide you with a selection quote.

Below are the commonly used cooling tower level sensors supplied by our Sino-Inst.

Featured Cooling tower level sensors

SIRD-704 Coaxial Probe Guided Wave Radar Level Transmitter

**ULT-200A Ultrasonic fuel tank level sensor**

FAQ

The high-level alarm in a cooling tower is a warning system that triggers when the water level inside the tower exceeds a designated safe range or set point. This is to prevent potential issues such as water spillage, equipment damage, and other potential hazards, ensuring the cooling tower operates safely and efficiently.

The airflow in a cooling tower can be measured in various ways, with the most common methods being the use of an anemometer or differential pressure measurement. An anemometer directly measures the speed of air flow, while differential pressure measurement infers the airflow rate by determining the pressure difference inside and outside the tower. The specific method chosen should consider the type and size of the cooling tower.

The tower range refers to the temperature difference between the hot water entering the cooling tower and the cooled water exiting it. For a typical cooling tower, the range is usually between 3°C to 8°C (5.4°F to 14.4°F), but this can vary depending on the design and application of the cooling tower.

A high-level sensor is a device that detects the height of the liquid inside a container or equipment. When the liquid level reaches or exceeds a predetermined threshold, it sends a signal or an alert. This type of sensor is common in many industrial applications, such as cooling towers, oil tanks, and other liquid storage equipment, helping to prevent overflows and associated safety hazards.

Implement cooling tower level control

After choosing the appropriate Cooling tower level sensors. We need to set up the cooling tower water level control.

The control of cooling tower water level is a key link to ensure the stable operation of cooling tower. The correct water level ensures cooling efficiency while also avoiding equipment downtime due to lack of water. The following is an introduction and guidance on how to achieve cooling tower water level control:

Connect and control equipment:

Cooling Tower Level sensors typically output a 4-20 mA current signal, which can be connected to a local controller or central control system. These control devices can be PLC, SCADA, DSC or independent level controllers. Any control device will do as long as the device can accept a 4-20 mA current signal.

Configuration operation scope:

The operating range of the controller needs to be programmed according to the measurement span of the Cooling Tower level sensor. Also, consider that the sensor’s 4 mA set point is typically above empty box conditions. Once the controller’s operating range and engineering units are configured correctly, they can be applied to relay set points for pumps, valves, or alarm automation.

Critical control points:

The main control task is to ensure that the cooling tower is filled in time before the water is reduced due to evaporation. This avoids process interruptions due to lack of water. Typically, this is accomplished via a valve. The filling process should start at a low level and stop at a high level.

Set alarm point:

A low level alarm or shutdown set point should be set below the open valve set point to ensure filling begins before the low level reaches this point.
For safety reasons, it is recommended to use an independent high level alarm or safety shutdown system in addition to the main control system.
Likewise, for process protection it is recommended to use an independent low level alarm or safety shutdown system.

The PLC, SCADA, DSC or independent level controllers mentioned above need to be provided by professional suppliers. If you do not have these systems and want to achieve control, you can use the level recorders provided by Sino-Inst.

The T710 series ultrathin paperless recorder adopts the new large-scale integrated circuits to realize the reliable protection and robust anti-jamming for input, output, power supply and signals. The recorder can achieve eight-channel universal signal input (the configurable and optional inputs include standard voltage, standard current, thermocouple, thermal resistance and millivolt), four-channel alarm output and one feed output. It has the RS485 communication port, Ethernet port, micro-printer port, USB device port and SD card socket. The recorder enjoys a powerful display function, which can achieve real-time graphic display, historical graphic recalling, bar graph display and alarm status display.

Alarm output: Output through normally open contacts of the relay;Contact capacity: 1A/250VAC and1A/24VDC (resistive load)(! Note: If the load excesses to the relay contact capacity, do not load directly.)

Feed output: DC24V±10%, load current: ≤100mA

Communication output：
RS485 communication port:Baud rates range: 2400 – 19200bps (settable);The standard MODBUS RTU communication protocol is adopted. The communication distances of the RS485 port is 1 km.Ethernet communication port:Communication speed: 10/100M, auto.

Case: High Temperature Radar Level Transmitter for Melted Salt-Solar Photovoltaic Power Station

Posted on August 23, 2023 by KimGuo11

Melted salt tanks, also known as molten salt troughs, serve the primary purpose of storing high-temperature liquid molten salt. Within these systems, the tanks store heat energy to provide the necessary thermal energy for reactors or heat exchangers or store excess energy. Given the extreme temperature and conditions within these tanks, there’s a need for reliable level measurement technology.

RFQ

Melted salt, reaching temperatures of around 460°C, creates a complex tank environment, especially when mixed with steam. Most level transmitters fail to operate under these harsh conditions.

Challenges of Measuring Melted Salt Levels:

High Temperatures: Melted salt can reach up to 460°C, making it hard for standard devices to operate reliably.
Steam Interference: The presence of steam in the tank creates a complex environment, which can interfere with measurement signals.
Tank Conditions: The frequent temperature fluctuations and regular start-ups can affect the accuracy of level measurements.
Material Properties: The molten state of salt presents a challenge, different from measuring solid or regular liquid states.
Equipment Durability: Many devices aren’t built to withstand the extreme conditions inside a melted salt tank over extended periods.
Accuracy: Precise measurements are crucial, but many transmitters can’t maintain consistent accuracy under these conditions.
Safety Concerns: Due to the high temperatures and nature of melted salt, there’s a heightened need for safe measurement methods.
External Factors: Outside atmospheric conditions, like pressure and humidity, can also influence measurement reliability.

In such a demanding setting, it’s vital to have equipment specially designed to overcome these challenges, ensuring safe and accurate level measurements.

Sino-Inst’s Solution:

After extensive site inspections and numerous tests, Sino-Inst introduced a customized high-temperature radar level transmitter. This new device can measure liquid levels in temperatures from 300°C to over 1000°C, even in tough environments. It’s a big advancement in level measurement technology.

Working Conditions and Environment:

Ambient temperature range: -35℃ to 80℃
Relative humidity: ≤95%
Atmospheric pressure: 86～108KPa
Medium temperature: 400-595℃
Medium: Molten Salt

Performance Indicators:

Measurement accuracy within the full range: <±0.1%, display resolution: ±1mm
Protection level of the transmitter: IP67
Response time under 200ms, tracking rapid changes in tank levels.
Resistant to design pressure 1.5 times during a water pressure test.

Considering the environmental and working conditions of the solar molten salt tower-type thermal power molten salt tank, Sino-Inst selected the best products for precise, stable measurements. The 80G high-frequency high-temperature radar level gauge was chosen with specific features:

Enhanced with a cooling system and heat dissipator to ensure stable operation.
Equipped with a convex lens to prevent adhesion, ensuring measurement accuracy.
Radial measures that are narrow, facilitating easy installation and stability.

Key Advantages:

Unaffected by atmospheric precipitation
Measures boiling liquid levels
Installation outside storage tanks
Internal antenna with fluoroplastic lens heating protection
Accurate level measurement not limited by internal temperatures
Evaporation and dust don’t affect measurement
Operates in ambient temperatures from -60°C to 70°C and process temperatures up to 1200°C
Corrosive liquid level measurement without contact, ensuring stable measurements.

Technical Principle:

The radar level transmitter operates on the principle of time travel. It emits high-frequency pulses at the speed of light, which, upon striking the surface of the material, are reflected back and received by an internal receiver. This distance signal is then converted into a level signal.

Radar Level Measurement and guide wave radar level measurement Image source: https://instrumentationtools.com/radar-level-measurement/

Applications:

Solid measurements including powders, granules, and plastic granules with a low dielectric constant.
Liquid measurements, including reactor levels, steam levels, foam product levels, and more.

More Featured Radar Level Meters

**SIRD-901 Radar Corrosive Liquid Chemical Level Sensor**

**SIRD-903 26 GHz Radar level Sensor -Dust solid level measurement**

**SIRD-805 Radar Slurry Tank Level Sensor**

SIRD-703 GWR Bulk Solids & Powder Solid Level Sensor

Ultrasonic Level Transmitter Installation Guide

Posted on August 7, 2023 by KimGuo11

What points should be paid attention to for Ultrasonic level transmitter installation? Ultrasonic level transmitter is a widely used non-contact/non-invasive liquid level meter. Including wastewater storage tanks, fuel storage tanks, wastewater treatment pools, etc. Connect to the display table or various DCS systems through 4~20mA or RS485 (Modbus protocol or other customized protocols). Provide real-time liquid level data for industrial automation.
Let’s take a look at the Ultrasonic level transmitter installation requirements and what the installation principles are.

RFQ

Ultrasonic level transmitter working principle and frequency range

Ultrasonic level transmitter is a cost-effective liquid level measuring instrument. It is mainly composed of three parts: transducer, electronic module and housing. The transducer is one of the core components, and the working frequency of the transducer is one of the important parameters.

Ultrasonic pulses are emitted by sensors (transducers) during the measurement. The sound waves are reflected by the liquid surface and picked up by the same sensor. Converted into electrical signals by piezoelectric crystals. And the distance between the sensor and the surface of the liquid to be measured is calculated by the time between the emission and reception of the sound wave.

The selection of the operating frequency of the ultrasonic transducer is a very important parameter. It is not only directly related to the frequency characteristics and directional characteristics of the transducer. It also affects important performance indicators such as the transmitting power and transmitting efficiency of the transducer. In general, the working frequency of the ultrasonic level gauge is consistent with the working frequency of the ultrasonic transducer.

Working frequency is an important parameter of ultrasonic liquid level gauge. During the production of each ultrasonic sensor of Sino-Inst, the working frequency and impedance characteristics of the transducer are strictly measured and recorded to ensure product quality.

Featured Ultrasonic Level Transmitters

**HS-2000 Ultrasonic Tank Level Sensor-External Mounted**

Principles of Ultrasonic Level Transmitter installation

When you’re installing an Ultrasonic Level Transmitter, in addition to meeting the installation requirements, there are certain principles to consider:

The distance from the probe’s emission surface to the low liquid level should be less than the range of the purchased transmitter.
The distance from the probe’s emission surface to the high liquid level should be greater than the blind zone of the purchased transmitter.
The probe’s emission surface should remain parallel to the liquid surface.
The location of the probe’s installation should ideally avoid areas directly below inlets and outlets where the liquid surface experiences significant fluctuations.
If the pool or tank wall is not smooth, the transmitter’s installation location should be more than 0.3m away from the wall.
If the distance from the probe’s emission surface to the high liquid level is less than the blind zone of the purchased transmitter, an extension tube should be installed. The extension tube should have a diameter greater than 120mm, and a length between 0.35m and 0.50m. It should be installed vertically, have a smooth inner wall, and the opening in the tank should be larger than the extension tube’s inner diameter. Alternatively, the tube can extend to the bottom of the tank and should have a diameter greater than 80mm. Holes should be left at the bottom of the tube to keep the internal liquid level of the extension tube at the same height as inside the tank.

Basic Requirements for Ultrasonic Level Transmitter Installation

Before installing an ultrasonic level transmitter, make sure the instrument model meets the environmental requirements of the site, such as process pressure, process temperature, and chemical properties of the medium. This will ensure normal operation after installation.

Ultrasonic level transmitters have a certain emission angle when transmitting ultrasonic pulses. There should be no obstacles within the radiating area of the emitted ultrasonic beam from the lower edge of the ultrasonic transducer to the surface of the medium being measured. This requires avoiding internal facilities such as ladders, heating equipment, and limit switch brackets during installation.

Moreover, note the following when installing an integrated ultrasonic level transmitter:

Because of the sound beam angle, the ultrasonic beam should not intersect with the feed flow. Therefore, do not install the integrated ultrasonic level transmitter above the feed flow to ensure measurement of the medium surface and not the feed flow. Make sure the highest material level does not enter the measurement blind zone during installation.
The integrated ultrasonic level transmitter must maintain a certain distance from the tank wall.
The installation of the integrated ultrasonic level transmitter should aim to keep the transducer vertical to the liquid surface.
When installing the instrument outdoors, sunshade and rain protection measures should be adopted to avoid direct sunlight and reduce measurement errors caused by temperature changes.
The integrated ultrasonic level transmitter installed in hazardous areas must comply with national explosion-proof hazardous area installation regulations. In places where explosion-proof requirements are needed, the ultrasonic level transmitter must be grounded.

Other Requirements for Ultrasonic Level Transmitter Installation

Installation location: Keep the integrated ultrasonic level transmitter at least 200mm away from the tank wall. For a conical container with a flat tank top, install the instrument at the central position of the container top. This ensures measurement to the bottom of the container. For an arch-shaped tank, install it at 1/2 or 2/3 of the tank top radius. For trenches, take into account the load-bearing capacity of the bracket when installing. The probe emission angle should not exceed the A point boundary. The installation height must be within the range.
Moisture proofing: If the instrument is installed outdoors, in a humid indoor environment, or on the top of a refrigeration or heating tank, the environment is humid. Rainwater and condensation can flow down. To prevent moisture, before connecting the cable, please bend the cable and lead it downwards to prevent water or moisture from entering the instrument. Tighten the cable sealing sleeve.
Stirring effects: If there is stirring in the tank, the integrated ultrasonic level transmitter should be away from the stirrer to eliminate the false echo effect caused by the stirring blades. If foam is generated due to stirring or waves are turned up, use the guide wave tube installation method.
Foam effects: During feeding, stirring, or other treatments in the container, foam can form on the surface of some media, causing the ultrasonic level transmitter signal to attenuate. To avoid measurement errors caused by foam, install the sensor in the guide tube or use a guided wave radar level gauge. The guided wave radar level gauge is not affected by foam and is an ideal choice for this type of application.
Airflow effects: If there is a strong airflow or air vortex in the container, or it is installed outdoors and the wind is strong, install the sensor in the guide tube or use a guided wave radar level gauge.

**Portable Ultrasonic Liquid Level Indicator**

**Ultrasonic Sludge Interface Meter /**
**Sludge Level Meter**

**Portable Ultrasonic Water Depth Gauge**

Ultrasonic Level Transmitter Installation method:

In open environments, installation is generally achieved using a bracket, securing the device with the included locknut. Alternatively, you can drill a circular hole with a diameter of 60mm at the desired installation spot on the top of the tank or lid, and place the device in it. Then, tighten the locknut from underneath.

It is crucial to ensure that the face of the transmitter’s probe is parallel to the liquid surface being measured.

As illustrated, the probe of the device emits waves that reflect back upon hitting the liquid level. The probe calculates the time taken from emission to reception of these waves to determine the measured empty distance, H.

Subtracting the measured empty distance H from the installed height TH gives you the current liquid level, L. The transmitter’s range is the distance it can measure, and the installed height TH should be less than this range.

The device’s blind zone is the area near the probe that cannot be measured. The distance between the highest liquid level and the probe should be greater than the blind zone. For instance, if the blind zone is 0.5m, the distance between the highest liquid level and the probe must be more than 0.5m.

For example: If the range is 6 meters, the blind zone is 0.45 meters, the actual maximum measurable liquid level is between 0 to 5.5 meters. The emission of waves from the probe is a diffusion process, meaning it has a directional angle. Pay attention during installation to avoid hitting protrusions on the pool wall or the edge of the channel.

FAQ

To install an ultrasonic level transmitter, first, confirm the suitable spot for the device, either on a bracket or on the top of the tank or lid. Drill a hole if necessary. Place the device and secure it with the included locknut. Ensure the face of the transmitter’s probe is parallel to the liquid surface being measured.

Do not install the sensor where the emitted ultrasonic waves might hit obstacles like ladders, heating devices, or limit switch brackets within the tank.
Do not install the sensor where it might directly intersect with the inflow of material.
Avoid installing in a location where the sensor would be exposed to extreme weather conditions without adequate protection.

The ultrasonic sensor should be mounted in a location where its probe can be parallel to the liquid surface being measured. This is often at the top of the tank or the lid. Ensure that the sensor is at a safe distance from the walls of the container and away from any internal installations like ladders or heating devices.

Ultrasonic sensors can be mounted by placing them in the desired spot, either on a bracket or a drilled hole on the top of the tank or lid. Secure the sensor with the included locknut from underneath. Make sure the sensor’s probe is parallel to the liquid surface being measured for accurate readings.

Liquid Level Sensor Probes Types and How to Select

Posted on August 2, 2023 by KimGuo11

Liquid Level Sensor Probes are an essential part of liquid level transmitters. When purchasing a liquid level meter, we must consider the type of Liquid Level Sensor Probes, such as contact or non-contact. Such as the length of the probe, capacitive probe, float probe rod, etc. Or the working principle of Liquid Level Sensor Probes, such as ultrasonic, radar, hydrostatic pressure, etc. Selecting the right type is crucial, as it ensures accuracy, efficiency, and the reliability of the measurement. Whether in industries like food processing, oil and gas, or water treatment, the right sensor can optimize operations and minimize risks.

RFQ

What is Liquid Level Sensor Probe?

We can understand that a level meter is composed of a probe and a transmitter. Liquid Level Sensor Probes detect the amount of liquid in a specific space, like a tank or a bottle. They’re vital because they help monitor and control the amount of liquid, making sure there’s not too much or too little. This control keeps systems running smoothly and safely, saving both time and money.

For example, Capacitance sensing probe devices for measuring liquid level and converting it to an electrical signal to send to other instrumentation.

You may also have seen straight rod probes, cable probes, and coaxial probes. Or PTFE non-contact probe. Then, according to our many years of experience, Liquid Level Sensor Probes can be classified from several aspects. That is: working principle and material.

From the material point of view, it is easy to understand. It only needs to be compatible with the measured liquid. For example, to measure sulfuric acid, the probe is generally made of anti-corrosion material, such as PTFE. Therefore, when we select enough level meters, we only need to inform the manufacturer of the compatible materials of the measured medium.

Next, let’s look at different types of Liquid Level Sensor Probes from the working principle.

Types of Liquid Level Sensor Probes

Float Level Sensor Probes

Float Level Sensors are widely used in applications where accurate liquid level measurements are needed. Common scenarios include water tanks, where they help in maintaining the desired water level; fuel systems, to monitor fuel storage; sump pumps, to prevent flooding.

Their simplicity and reliability make them suitable for many liquid monitoring tasks.

Advantages:

Simple Design: Easy to install and use.
Cost-Effective: Suitable for budget-conscious applications.
Reliable: Performs well in various standard applications.
It can be made into a multi-float form. For multi-level control.

Disadvantages:

Limited Use: Not suitable for turbulent or dirty liquids.
Wear and Tear: Moving parts may require regular maintenance.

Capacitive Liquid Level Sensor Probes

Capacitive Liquid Level Sensor Probes work on the principle of detecting changes in electrical capacitance caused by the presence of a liquid. The sensor probe forms one plate of a capacitor, and the liquid acts as a dielectric material. Changes in the level of the liquid alter the capacitance, providing a measure of the liquid’s level.

Typical applications include the food and beverage industry, pharmaceuticals, and chemical processing, where non-contact, versatile liquid level sensing is needed, particularly with non-conductive or high-temperature fluids.

Advantages:

Works Well on Dielectric Fluids.
Simple Mechanical Construction: Easy to manufacture and install.
No Moving Parts: This reduces the need for regular inspection and maintenance, and minimizes wear and tear.
High-Temperature Fluid Compatibility: Since no sensitive components make contact with the fluid, it can handle high temperatures.
Performance Unaffected in Sealed or Pressurized Vessels: The design ensures stable functioning in different container types.

Disadvantages:

Incompatibility with Conductive Fluids: Requires an insulated outer tube for working with conductive liquids.
Issues with Thick or Sticky Media: Such substances can coat the probe, creating an insulation layer that causes malfunction or affects performance.
Requires Calibration: Proper setup is needed to distinguish between liquid and air.
Sensitive to Changes in Media: Changes in the dielectric constant of the fluid can affect readings.
Potential Obstruction and Cleanliness Issues: Probe protruding into the liquid might cause blockage, attract fouling, and create hygiene concerns.

Ultrasonic Level Sensor Probes

Ultrasonic Level Sensor Probes function by emitting sound waves at ultrasonic frequencies. These waves bounce off the surface of the liquid and are detected by the sensor. By calculating the time taken for the sound waves to return, the distance to the liquid surface, and hence the level, is determined.

Ultrasonic sensors are commonly used in wastewater treatment, oil and gas industries, and irrigation systems, where non-contact measurement is preferred. Their capability to work with dirty or corrosive liquids makes them valuable in such applications.

Advantages:

Non-Contact Measurement: Suitable for corrosive or dirty liquids.
High Accuracy: Provides precise readings.
Versatile: Works well in various conditions. Such as explosion-proof.

Disadvantages:

Sensitive to Foam or Vapor: These factors may affect performance.
Measuring distance is limited. Ultrasonic is not suitable for larger measuring ranges.

Radar Level Sensor Probes

Radar Level Sensor Probes operate using radio waves. A radar pulse is transmitted, which reflects off the surface of the liquid and returns to the sensor. By measuring the time it takes for the pulse to travel to the liquid and back, the distance, and therefore the level, is calculated.

Radar sensors are highly accurate and can work in extreme conditions, making them suitable for the chemical industry, large industrial tanks, and marine applications. Their adaptability allows for usage with various liquids, even in challenging environments.

Advantages:

Highly Accurate: Offers very precise readings.
Extreme Conditions: Functions well in tough environments.
Versatile: Suitable for various liquids.

Disadvantages:

Complex Setup: May require professional installation.
More Expensive: Higher upfront cost.
Alignment Needed: Proper positioning is crucial.

**SI-PCM260 Deep Well Water Level Sensor**

Magnetostrictive Level Sensor Probes

Magnetostrictive Level Sensor Probes operate by detecting changes in the magnetic alignment within a sensing element. A current pulse generates a magnetic field, interacting with a magnetic float, causing a torsional strain wave. The time taken for this wave to travel is measured, determining the liquid level.

Known for high precision and robust design, these sensors are typically used in petrochemical industries, pharmaceutical manufacturing, and cryogenic applications. Their ability to function in hazardous environments adds to their appeal in these specialized areas.

Advantages:

High Precision: Extremely accurate readings.
Robust Design: Suitable for hazardous environments.
Reliable: Functions well in various industrial settings.
Large range cable probes can be customized.

Disadvantages:

More Expensive: Higher cost may limit applications.
Magnetic Interference: Susceptible to external magnetic fields.

Hydrostatic Level Sensor Probes

Hydrostatic Level Sensor Probes work by measuring the pressure exerted by the liquid at a specific depth, which corresponds to the liquid’s level. The weight of the liquid creates pressure, which the sensor translates into a level reading.

These probes are often utilized in water treatment facilities, sewage systems, deep wells, and fuel tanks.

Their straightforward principle and reliability make them suitable for environments where liquid density is consistent, and there might be slurry or muddy substances, as they can handle such conditions effectively.

Advantages:

Simple and Reliable: Easy to use and offers dependable readings.
Works with Muddy Liquids: Suitable for slurry or muddy substances.
Low Maintenance: Requires minimal upkeep.

Disadvantages:

Pressure-Sensitive: Changes in pressure may affect performance.
Regular Cleaning Needed: Thick media may require consistent cleaning.

How to Select the Right Liquid Level Sensor Probe

Selecting the right Liquid Level Sensor Probe is essential for accurate and reliable measurements. Here’s a simple guide to help you choose the best option for your needs:

Understanding Your Needs:

Liquid Type: Identify if the liquid is conductive, non-conductive, sticky, or corrosive.
Measuring Range: Determine the maximum and minimum levels that need to be monitored.
Environmental Conditions: Consider factors like temperature, pressure, humidity, etc., that may affect the sensor.

Evaluating Different Types:

Material Requirements: Choose materials that are compatible with the liquid being measured, considering factors like corrosion resistance.
Installation Size: Check the dimensions of the sensor to make sure it fits within the available space.
Installation Space: Consider the physical layout of the area where the sensor will be installed.
Signal Output and Signal Control: Determine the type of output needed (analog, digital) and if any specific control features are required, like alarms.

Consideration for Installation and Maintenance:

Ease of Installation: Look for sensors that can be installed without specialized tools or expertise.
Maintenance Needs: Understand the cleaning and servicing needs, as some sensors might require more regular maintenance.

By taking these factors into consideration, you can find a Liquid Level Sensor Probe that meets your specific requirements and provides consistent, accurate performance. Remember to consult with experts or refer to detailed product specifications for the best results.

Client Case: Measuring Sulfuric Acid Tanks

We were approached by a customer looking to measure the liquid level in open concrete tanks containing bath acid sulfuric acid. The specific parameters provided were:

Measured Medium: Bath acid sulfuric acid
Tank Measurement Range: 2 meters
Temperature and Pressure: Ambient; maximum atmospheric temperature 30°C
Mounting Dimensions: 1 1/2″ NPT

After understanding the requirements, we configured the following solution for accurate and reliable measurements:

Radar Level Meters – 80G:

Application: Measuring the liquid level in sulfuric acid tanks
Antenna Material: PTFE, for excellent resistance to acid
Temperature Resistance: -40 to 80℃, suitable for ambient conditions
Pressure: -0.1 to 0.3MPa, aligning with atmospheric pressure
Mounting Dimensions: 1 1/2″ NPT PTFE Coated, matching customer’s specifications
Display: Digital, with measurement and programming capabilities
Power Supply: 24VDC
Output: 4-20mA (two wires) + HART
Electrical Connection: 1/2″ NPT head

This configuration met the customer’s specific needs for measuring sulfuric acid, providing a solution that is both reliable and tailored to their application. The client was satisfied with the performance, praising the gauge’s accuracy and ease of use.

FAQ

Make sure you have the answes to the following key questions before selecting a level meter, controller on any other level measurement instrument:

Are you measuring a liquid or solid?
What are the application’s temperature and pressure ranges?
Is point level or continuous measurement required?
What level measurement range do you need?
Is the measured material electrically conductive?
Will the material coat or build up on surfaces?
Does turbulence, foam, or vapor occur at the surface of the liquid?
Will you need contact or non-contact level measurement?
What kind of output do you need–analog, relay, digital display, etc

Two common electronic probes used to measure liquid levels are capacitive and ultrasonic sensors. Capacitive sensors detect changes in electrical capacity caused by the liquid, while ultrasonic sensors use sound waves to determine the liquid’s surface distance.

A probe sensor for a water level indicator is a specific type of Liquid Level Sensor Probe that’s designed to measure water levels. It can be used in tanks, reservoirs, and other containers to monitor and control water levels, often in water treatment or irrigation systems.

The best sensor for measuring water levels depends on the specific needs and conditions, such as the type of water, temperature, pressure, and desired accuracy. Common choices include float-operated sensors for simplicity and ultrasonic sensors for non-contact measurements. Consulting with a professional or a sensor supplier can help determine the best option for a particular application.

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Radar Level Gauge – Everything You Should Know and Selection List

Radar level gauges are an essential part of many industrial operations, serving as the invisible sentinels that accurately measure the…

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Selecting the right Liquid Level Sensor Probe is a critical task, and the various types mentioned offer unique advantages and considerations. Understanding your specific needs and working with an experienced manufacturer can ensure the best solution for your application.

At Sino-Inst, we pride ourselves on being not only an experienced manufacturer but a knowledgeable supplier as well. With years of expertise in the field, we provide tailored solutions to meet your unique needs, even offering customization to align perfectly with your requirements.

If you’re in need of a Liquid Level Sensor Probe, don’t hesitate to reach out to us. Our team is here to assist you in selecting the right product, ensuring efficiency, reliability, and satisfaction. Contact us today and let us be your trusted partner in your liquid level measurement needs.

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KimGuo11

drurylandetheatre.com

What Is the Ultrasonic CO2 Level Indicator? CO2 Bottle Level Measuring Device

Posted on July 28, 2023 by KimGuo11

What Is the Ultrasonic CO2 Level Indicator?

Ultrasonic CO2 Level Indicator is the best CO2 Bottle Level Measuring Device. Our product Portable Ultrasonic Liquid Level Indicator can effectively detect the storage capacity of the fire extinguishing agent storage container in the gas fire extinguishing system (such as: Proto-Indo-European, halo-alkane, CO2, etc.).
Our Portable Ultrasonic Liquid Level Indicator uses non-contact detection technology and is ideal for detecting hazardous toxic or corrosive liquids. It can be used to measure whether there is liquid at a certain height in a container or pipeline.

RFQ

Portable Ultrasonic Level Indicator

Our Portable Ultrasonic Liquid Level Indicator for tank is designed to determine the presence or absence of the liquid at a certain height in a container or in pipeline. The liquid containers to be measured can be made of various kinds of materials such as metal, glass or un-foamed plastics.

Under ordinary conditions, the maximum wall thickness of measured containers is 30mm. The indicator can be used to detect various types of liquids (without crystallization or other particulate matter). Because of the innovative non-contact detection methods, this liquid level indicator is an ideal choice for the detecting dangerous toxic or corrosive liquids.

Features

No physical contact with medium
Suitable for toxic, corrosive, or invasive media
No need for drilling or welding on tank wall
Simple and convenient to operate and maintain
Ultrasonic adaptive detection algorithm.
High-contrast OLED color display, suitable for outdoor use under strong light
Intuitive user interface design
Comprehensive software displays measurements simply and clearly

Applicable CO2 Tanks/Cylinders/Bottles

CO2 Tank with any of the following diameter ranges:

210mm-230mm, 265mm-285mm, 340mm-360mm, 390mm-410mm

Common Tank:

All tanks outside the above tank diameter ranges can be considered as common type.
vertical tank / horizontal tank / spherical tank(diameter <3M)
The indicator has no requirement towards medium, height and pressure.

Parameters

Measurement accuracy	< 5mm
Measurable range of wall thickness	3~30 mm
Measurable tank material	Steel, stainless steel, glass, unformed plastics
Measurable medium	Pure liquid, milky liquid, suspension liquid
Ambient temperature	-20℃〜60℃ (-4℉〜+140℉)
Ambient humidity	15% ~ 85% RH
Power supply	Two lithium batteries (supplied by customers)
Current	100 mAh (on average)

Ultrasonic CO2 Level Indicator CO2 Tank Measurement

CO2 cylinder specifications (external diameter division):

The CO2 cylinders measured by this meter are divided into the following 4 specifications:

215mm-225mm diameter cylinders,
270mm-280mm diameter cylinders,
345mm-355mm diameter cylinders,
395mm-405mm diameter cylinders.

There are no excessive requirements for the height of the medium and the tank.

CO2 cylinder measurement operation:

Select “co2 cylinder”-“Choose a suitable cylinder diameter” through the menu and enter the measurement interface.
Hold the probe vertically and tightly on the tank, and press the button to measure.
Measurement results are based on measurement parameters and level indicator lights (red is “no liquid”, green is “with liquid”)
Generally, the measurement is started from the bottom of the storage tank (measurement with liquid position). If the measurement parameter is> = 2, the current level is considered to be a liquid-free position, and <2 is considered to be a liquid level; if it is floatingaround 2, It is considered that the liquid level of the horizontal plane is approaching the liquid surface (usually about 5 cm).
Take multiple points on the same horizontal plane for measurement, and take the result with the highest probability as the final result (avoid the interference of welds and unknown factors).
Find the liquid level position step by step through theapproximation measurement.

CO2 cylinder measurement Note:
Due to the irregular air outlet and a large number of welding kits at the top of the co2 cylinder, the measurement results at the bottom and top are invalid. (The top is generally empty in the case of a full tank).

Please refer to the video below to understand the operation tutorial and case of Ultrasonic CO2 Level Indicator.

In addition to Ultrasonic CO2 Level Indicator, we have more applications of ultrasonic technology.

More Ultrasonic Prodcuts

**Insertion Type Ultrasonic Flow Meter-Heat Meter–Mono/multi-Channel**

Our Sino-inst Ultrasonic CO2 Level Indicator stands as a symbol of safety, precision, and efficiency in industrial applications. This superior device excels in assessing fire extinguishing systems, accurately measuring storage capacity with its non-contact det ection technology. It is versatile, handling various agents like Proto-Indo-European, halo-alkane, and CO2.

The safety advantages of this tool are unmatched, as it ensures no direct contact with toxic or corrosive liquids. Industries that prioritize safety, accuracy, and reliability find enormous value in our Ultrasonic CO2 Level Indicator. Whether for regular monitoring or spot checks, it provides dependable data, ensuring operations run smoothly and safely. Trust the Ultrasonic CO2 Level Indicator – it’s your partner in precision.

Our Ultrasonic CO2 Level Indicator is widely sold to various countries in the world. As an excellent and portable CO2 Bottle Level Measuring Device, it provides convenience for various industries such as fire protection. If you need, please feel free to contact Sino-Inst!

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KimGuo11

drurylandetheatre.com

Radar Level Gauge – Everything You Should Know and Selection List

Posted on July 12, 2023 by KimGuo11

Radar level gauges are an essential part of many industrial operations, serving as the invisible sentinels that accurately measure the levels of various substances. These sophisticated devices use cutting-edge radar technology to make precise, non-contact measurements. Capable of working seamlessly under a variety of challenging conditions, radar level gauges offer undeniable benefits in accuracy, reliability, and versatility.

RFQ

Featured Radar Level Gauge Selection

Measuring medium: Liquid
Measuring range: 0.1m~10m
Process connection: Thread G¾”A / ¾”NPT;Flange ≥DN25
Process temperature: -40～100℃
Process pressure: -0.1～1.6 MPa
Antenna size: 21mm lens antenna
Antenna material: PTFE
Accuracy: ±5mm
Protection level: IP67
Center frequency: 80GHz
Launch angle:14°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Liquid
Measuring range: 0.1m~30m
Process connection: Thread G½”A /1 ½”NPT; Flange ≥DN40
Process temperature: -40～80℃/ -40～100℃
Process pressure: -0.1～0.3 MPa
Antenna size:32mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 8°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART protocol

Measuring medium: Liquid
Measuring range: 0.1m~30m
Process connection:Flange ≥DN40
Process temperature: -40～120℃
Process pressure: -0.1～1.6 MPa
Antenna size:32mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 8°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART protocol

Measuring medium: Liquid
Measuring range: 0.2m~30m/0.3~150m
Process connection:Flange ≥DN80 /Thread G3 A
Process temperature:
- -40～150℃
- -40-130℃( Athread)
Process pressure: -0.1～1.0 MPa
Antenna size:76mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 3°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Liquid
Measuring range: 0.2m~30m/0.3~150m
Process connection:Flange ≥DN80 /gantry frame
Process temperature: -40～80℃
Process pressure: -0.1～0.3 MPa
Antenna size:76mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 3°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Liquid
Measuring range: 0.1m~30m/0.3m~150m
Process connection:Flange ≥DN80
Process temperature: -40～280℃
Process pressure: -0.1～2.5 MPa
Antenna size:76mm lens antenna
Antenna material: PEEK
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 6°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Liquid
Measuring range: 0.1m~30m
Process connection:Flange ≥DN50
Process temperature: -40～200℃
Process pressure: -0.1～2.5 MPa
Antenna size:44mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 6°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Liquid
Measuring range: 0.3m~30m
Process connection:Flange ≥DN80
Process temperature: -40～200℃
Process pressure: -0.1～2.5 MPa
Antenna size:76mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 3°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Solid
Measuring range: 0.1m~30m/0.3~150m
Process connection:Flange ≥DN80
Process temperature: -40～150℃/-40～200℃
Process pressure: -0.1～0.3 MPa
Antenna size:76mm lens antenna
Antenna material: PTFE
Accuracy: ±5mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 3°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Measuring medium: Solid
Measuring range: 0.1m~30m/ 0.3m~150m
Process connection:Flange ≥DN80
Process temperature: -40～80℃
Process pressure: -0.1～0.3 MPa
Antenna size:76mm lens antenna
Antenna material: PE
Accuracy: ±5mm
Protection level: IP67
Center frequency: 80GHz
Launch angle: 3°
Power source:
- Two-wire system/DC24V
- Four-wire system/AC220V
- Six-wire system/DC12-24V
Shell: Aluminum/Plastic/Stainless steel
Signal output:
- Two-wire system/4…20mA/HART protocol
- Four-wire system/4…20mA/HART protocol
- Six-wire system/4…20mA/HART Protocol

Radar Level Gauges Measurement Technology

The general principle of the FM continuous wave radar level gauge is that the radar emits electromagnetic waves on the top of the tank, and the electromagnetic waves are received by the radar after being reflected by the medium.

The frequency difference δf between the received signal and the transmitted signal is proportional to the distance R from the surface of the medium: R=C (speed)*δf (frequency difference)/2/K (frequency modulation slope).

Because the speed of light C and the frequency modulation slope K are known, the frequency difference δf can be estimated to obtain the distance R from the radar installation position to the material surface. And then through the known total height of the tank, subtract the spatial distance from the radar to the material surface (referred to as Empty height) to get the height of the material level.

Advantages of Using Radar Level Gauges

Millimeter-wave radar, with a measurement accuracy of up to ±1mm, and a minimum blind area of 0.1m.
The smaller antenna size satisfies the measurement of more working conditions.
A variety of lens antennas, smaller launch angle, more concentrated energy, stronger echo signal, under the same industrial and mining conditions, compared to
Other radar products have higher reliability.
With stronger penetrability, it can be used normally even if there is adhesion and condensation.
The dynamic signal range is larger, and the measurement of low dielectric constant medium is more stable.
6. A variety of measurement modes, the radar reaction time in the fast measurement mode is less than 1S.

Applications of Radar Level Gauges Across Industries

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Selection List

When choosing a radar level gauge, several factors need careful consideration to ensure that the gauge suits your specific requirements. Here’s a list to guide your selection process:

Nature of the Substance: The physical characteristics of the substance to be measured play a crucial role. Consider whether the substance is liquid or solid, its reflective properties, its density, and whether it is corrosive or otherwise hazardous.
Environmental Conditions: The conditions in which the gauge will operate can significantly affect its performance. Important conditions to consider include temperature, pressure, humidity, and the presence of dust or other particulates.
Installation Requirements: Gauge installation requirements, such as the size and shape of the tank or container, the presence of obstructions, and the available mounting options, can influence the choice of radar level gauge.
Range and Accuracy: Ensure the gauge has a measurement range that suits your needs. Also, consider the level of accuracy required for your operation.
Maintenance and Durability: Ideally, the gauge should require minimal maintenance and be durable enough to withstand your operating conditions for a reasonable period.
Cost: Finally, consider your budget. While higher-end models may offer advanced features and better performance, there might be cost-effective options that meet your requirements adequately.

Selecting the right radar sensor requires careful evaluation of your specific needs based on the sensor’s capabilities. Here we take the selection data of one of the radar level gauges FMW21/21s as an example.

21/21s

ID：

License

P    Standard (Non-explosion-proof)
I     Intrinsically safe（Exia IIC T6 Ga）
D    Flameproof（Ex db IIC T6 Gb）

Process Connection / Material

1 Flange≥DN80
X Special customization

Antenna Type / Material

A 76mm Lens antenna / With purge port / PE
B 76mm Lens antenna / With purge port / PTFE

Sealing / process temperature

A    FKM/（-40-80℃）
B    FKM/（-40-150℃）
C    FKM/(-40-200℃)
Y     Special customization

he Electronic Unit

1 （4~20）mA/HART protocol 24VDC   2-wire
2  （4~20）mA/HART protocol 220VAC   4-wire
3  （4~20）mA+RS485/Modbus protocol 12- 24VDC   6-wire

Shell material/protection grade

A   Cast aluminum / Single chamber / IP67
B   Cast aluminum / Double chamber / IP67
C   Cast aluminum / Double cavity side view / IP67
D   Plastic ABS / Single chamber / IP65
E   Stainless steel 304 / Single chamber / IP67
F    Stainless steel 304 / Double chamber / IP67

Cable Line

M M20×l. 5
N ½″ NPTX Special customization

Display programming

A    Programming with display
B    With display programming/ Bluetooth communication
C    Without

Flange option / material

Specification / Code / Material	PP Universal	PTFE Universal	Stainless steel304 Universal	Stainless steel316L Universal
DN80	P4	F4	G4	S4
DN100	P5	F5	G5	S5
DN125	P6	F6	G6	S6
DN150	P7	F7	G7	S7
DN200	P8	F8	G8	S8

More Featured Radar Level Meters

**SIRD-902 Drop Antenna Radar Tank Level Sensor**

**SIRD-902T Microwave Radar Liquid Level Sensor**

**SI-FMF12 Frequency Modulated Continuous Wave Radar Level Sensor**

**SI-FMF13 FMCW Radar Water Level Sensor**

**SI-FMF15 FMCW Radar High Temperature Level Sensor**

FAQ

A radar level gauge is an instrument used in various industries to measure the level of materials without making physical contact. It utilizes radar wave technology, emitting waves that bounce off the material surface and return to the gauge, enabling it to calculate the material’s level accurately.

Radar level measurement is known for its exceptional accuracy. While the exact degree of accuracy can vary depending on the specific model and operating conditions, most radar level gauges can achieve accuracy within a few millimeters.

There are mainly two types of radar level gauges: guided wave radar (GWR) and non-contact (or free-space) radar. GWR uses a probe to guide the radar waves to the material surface, while non-contact radar emits waves freely towards the material. Each type has its unique advantages and is suitable for different applications.

A radar level meter works by emitting radar waves towards the surface of the material being measured. These waves bounce back off the surface and are captured by the meter. By calculating the time it takes for the waves to travel to the surface and back, the meter can determine the level of the material accurately.

In conclusion, radar level gauges are a sophisticated and highly reliable tool for non-contact level measurement across diverse industries.

At Sino-Inst, we understand the vital role that accurate level measurement plays in your operations. We’re an experienced manufacturer and supplier of radar level gauges.

Whether you’re looking for standard options or require customized solutions to meet unique requirements, our team is ready to assist. We’re committed to delivering high-quality products that contribute to the efficiency and success of your business.

Request a Quote

Please enable JavaScript in your browser to submit the form

KimGuo11

drurylandetheatre.com

Disassemble the system

Exploring Advanced Level Monitoring Technologies

Part 1: Level Sensor

Part 2: Monitor System

Part 3: Featured Products

Steps to quickly build an industrial holding tank level indicator

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Chemical corrosive raw material storage tanks

FAQ

How do I check the water level in my underground tank?

Which is best water level indicator?

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How do I monitor my water tank level?

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What is the high level alarm on a cooling tower?

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What should the tower range be on a typical cooling tower?

What is a high level sensor?

Implement cooling tower level control

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Sino-Inst’s Solution:

Technical Principle:

Applications:

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Ultrasonic Level Transmitter Installation method:

FAQ

How do you install a level transmitter?

When installing ultrasonic level sensors, list three situations to avoid?

Where do you mount an ultrasonic sensor?

How do you mount an ultrasonic sensor?

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