LR series Integral flange Magnetostrictive level sensor

The magnetostrictive level sensor comes with a mounting flange. Directly mounted on the tank flange with 4 M8 screws. Continuous Level measurement of the diesel tank/fuel tank.

LR series Integral flange Magnetostrictive level sensor

The magnetostrictive level sensor is also called the Magnetostrictive level gauge, or Magnetostrictive level transmitter. The magnetostrictive level sensor is the best choice for water, diesel, and fuel tank level measurement. LR series Integral flange Magnetostrictive level sensor is flange integrated installation. The electronic compartment of the magnetostrictive level sensor comes with a mounting flange. The sensor can be directly mounted on the tank flange with 4 M8 screws. 4 ~ 20mA \ 0 ~ 10VDC \ RTU signal \ EIA-RS485 \ RS422 optional. The magnetostrictive level sensor can be intrinsically safe and explosion-proof. A magnetostrictive level sensor measures level just like guided wave radar/ultrasonic level detectors. With Longer life and better accuracy than Hydrostatic level transmitters.

Sino-Inst offers a variety of magnetostrictive level transmitters for industrial level measurement. If you have any questions, please contact our sales engineers.

Features of Magnetostrictive level sensor

LR series integral flange type liquid level sensor. The electronic compartment has its own mounting flange. Compact structure and convenient installation. Suitable for occasions with compact installation space. Can be installed in any common liquid tank and metering equipment. The sensor can use 4 M8 screws Installed directly on the tank flange.

The sensor must be installed vertically, and the installation slope should be less than 5 degrees. There are a variety of liquid-level floats. The hemisphere marked by the float should be above the liquid surface, and there are dead zones at both ends of the measuring rod

After the sensor is installed on-site, you can set the start and endpoints of the upper and lower liquid level measurement according to the actual liquid level measurement needs through the handheld setting terminal.

Rigid Probe Magnetostrictive Level Transmitter

● Sturdy and reliable. Waterproof and antifouling;
● Absolute output. No need for regular calibration and maintenance;
● Zero-point / full-scale point can be adjusted arbitrarily;
● Low power consumption design. Effectively reduce the system temperature drift;
● High precision. The highest 0.1mm liquid level measurement accuracy;
● Side outlet. Easy to install;
● Compact electronic warehouse. The installation height is as small as 35mm;
● Integrated flange-type electronic head. Can be directly installed at the mouth of the tank.

LR series Integral flange Magnetostrictive level sensor without local display. If you need a local display, please refer to SI-LT Magnetostrictive level transmitter with Local Digital Display

Specifications of LR series Integral flange Magnetostrictive level sensor

Optional interface
Optional interfaceAnalog-currentAnalog-voltageModbus
output signal4~20mA;0~20mA0~10V; 0~5V; -10V~10VRTU signal,EIA-RS485/RS422
General parameters
Installation methodFlange installation (4-M8), installation slope≤5 °
Measuring range50mm ~ 3000mm
Measurement parametersNon-linearity < ± 0.05 % F.S., Repeat accuracy < ± 0.002 % F.S.
Protection abilityStraight cable: IP68, aviation plug: IP65
Operating temperature-40 ℃ ~ + 85 ℃
Operating Voltage24VDC (-15 / + 20%)
Optional floatThe minimum diameter of the float is 17.5mm, the maximum pressure is 2.5Mpa, and the minimum density is 0.45

Extended reading: Diesel Tank Level Monitoring System

The dimension of Integral flange Magnetostrictive level sensor

Applications of Integral flange Magnetostrictive level sensor

  1. Robust stainless steel fully sealed structure
  2. Absolute position output
  3. Non-contact measurement, permanent wear-proof
  4. Low consumption design ensures low-temperature drift of the system

Learn more about Diesel fuel tank level gauges & Indicators

Installations of LR series Integral flange Magnetostrictive level sensor

For other installation methods of Magnetostrictive level sensor, please refer to the figure below.

Installations of Magnetostrictive level sensor
Installations of Magnetostrictive level sensor

Wiring Information

Wiring Information

Magnetostrictive level sensor design

A magnetostrictive level sensor is composed of stainless steel (measuring rod), magnetostrictive wire (sensitive element-waveguide wire), movable float (with permanent magnet inside), and other parts. With the HART protocol, the zero point and range can be adjusted remotely. Various parameters can also be adjusted through the three buttons in the cabinet and the LCD. Configurable parameters include unit, display upper and lower limits, damping, translation correction, calibration upper and lower limits, digital and analog fine-tuning correction, and factory reset.

Extended reading: level sensors for fuel tanks

What is magnetostrictive sensor?

Magnetostrictive Level Transmitters

The magnetostrictive sensor is a high-precision, ultra-long stroke absolute position measurement sensor. It is manufactured using the principle of magnetostriction. The magnetostrictive sensor is non-contact and never wears out. High resolution, high precision. High stability, high reliability, fast response time, and long working life. The level sensor with the principle of magnetostriction and high-resolution measurement is used for continuous level measurement. And the position of the magnetic float is determined based on the principle of magnetostriction measurement.

Special features

  • Continuous level measurement on the outside of the bypass
  • 2-wire technology 4 … 20 mA
  • Measured value output via digital interface and a selectable measured value as analogue signal
  • Case from stainless steel (display from glass)
  • Magnetostrictive level measuring instrument with high resolution

Applications

  • Sensor for continuous level measurement of liquids in bypass level indicators
  • Chemical and petrochemical industries, offshore
  • Shipbuilding, machine building
  • Power generating equipment, power plants
  • Pharmaceutical, food, water treatment, environmental engineering industries.

Extended Reading: Guide and Selection for Diesel Fuel Flow Meters

How does A Magnetostrictive Sensor work?

  1. When the sensor of the magnetostrictive level transmitter works, the circuit part of the sensor will excite a pulse current on the waveguide wire.
  2. When this current propagates along the waveguide wire, a pulsed current magnetic field is generated around the waveguide wire.
  3. There is a float outside the sensor rod of the magnetostrictive liquid level gauge. This float can move up and down along the rod with the change of liquid level.
  4. Inside the float there is a set of permanent magnetic rings. When the pulsed current magnetic field and the magnetic ring magnetic field generated by the float want to meet. The magnetic field around the float changes so that the waveguide wire made of magnetostrictive material generates a torsional wave pulse at the position of the float.
  5. This pulse is transmitted back along the waveguide wire at a fixed speed and detected by the detection mechanism.
  6. The position of the float, that is, the position of the liquid surface can be accurately determined by measuring the time difference between the pulse current and the torsional wave.
How does Magnetostrictive Sensor work

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

More Level Senors for Tank Level Measurement

A tank level sensor is a level sensor used to measure the tank level. The liquid level is the level of the liquid in a sealed container (such as a water tank) or an open container (water tank). The instrument that measures the liquid level is called a liquid level sensor, a liquid level gauge, or a liquid level transmitter. The liquid level sensor is a kind of level instrument. Hydrostatic, Ultrasonic, Magnetostrictive, Radar, Differential Pressure are common choices for tank level measurement. Liquid level sensors have been around for decades for leak detection or level measurement. Commonly measured mediums are Water, Fuel, Diesel, Gasoline, diesel, liquefied gas, liquid ammonia, etc. More about Level Senors for Tank Level Measurement.

Radar level transmitter

Radar level transmitter, also called Radar level gauge. Non-contact Continuous level measurement in liquids and solids with free space radar sensors. Non-contacting radar, based on microwave technology, detects only surfaces that reflect energy. These transmitters work on the principle of radar by using radio wave emissions. Mounted at the top of a tank filled with a liquid. The transmitter sends a radar signal into the liquid and receives a reflection of the signal. The transmitters then analyze the current fill level of the tank based on the time taken by the transmitted signal to return.

GWR level transmitter

Guided Wave Radar (GWR) Level Transmitters, also called wave guided radar level transmitters. Using guided wave radar technology, GWR level transmitters have no moving parts. They can measure both levels and the interface between two media. Continuous level measurement in liquids and solids with guided wave radar sensors. These transmitters work by sending a microwave pulse through a sensor cable or rod. The signal hits the surface of the liquid, and travels back to the sensor, and then to the transmitter housing. Based on the time taken by the signal to travel down the sensor and back up again. The electronics integrated into the transmitter housing determine the filling level.

Hydrostatic level transmitter

Hydrostatic level transmitters are also called submersible level transmitters, or pressure level transmitters. For Hydrostatic level measurement, Continuous level measurement in liquid applications with pressure sensors. These transmitters help in determining the fluid level of a container. By measuring the pressure of the resting body of the fluid within it.

Ultrasonic level transmitter

Ultrasonic Level Indicator, also called Ultrasonic level sensor, or ultrasonic level transmitter. In this type of transmitter, an ultrasonic transducer is mounted at, or near the top of a container containing liquid. The transducer sends out an ultrasonic pulse. The pulse hits the surface of the liquid and gets reflected. The sensor then calculates the fill level based on the time between the transmitted and received signal.

Extended reading: Diesel fuel tank level gauges & indicators

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Many people may confuse the float level sensor with the magnetostrictive level sensor. Because they look alike. But the actual working principle is different.

FAQ

How does a level transmitter work?

The level of the liquid medium in the container is called the liquid level. And the instrument that measures the liquid level is called the liquid level transmitter. Level transmitter is a kind of level instrument. There are two types of level transmitterss, one is continuous and the other is point-off. The continuous level transmitter is a real-time monitor of the height of the liquid in the container. The point type, which generally takes two points, high and low, and outputs an alarm signal when the medium in the container reaches these two points.The types of liquid level transmitters is very wide. Specific include: magnetic flap liquid level gauge, tuning fork vibration type, differential pressure type, pressure type. Ultrasonic, magnetostrictive liquid level gauge, magnetic flap, radar and so on.
Levels of media such as: water, viscous fluids, and fuels, or dry media such as bulk solids and powders can be measured using the transmitter.
Level measurement transmitter are used in a myriad of applications that require level measurement within containers or tanks. These transmitters often find their application in material handling, food and beverage, power, chemical, and water treatment industries.

What is radar level transmitter?

Radar level transmitter is a kind of liquid level transmitter which uses the principle of radar operation.
Radar Level Sensor also called radar level transmitter, are the indicating transmitter for liquid level.
Non-contact Continuous level measurement in liquids and solids with free space radar sensors.
RADAR (Radio Detection And Ranging) is a device which can detect the presence of faraway objects by obtaining a reflection of electromagnetic waves emitted from the device itself. Although invented much earlier, wide deployment of radar was done by Britain during the Second World War to detect oncoming German bombers.
Radar level measurement is a safe solution. Even under extreme process conditions (pressure, temperature) and vapors. Various antenna versions for every kind of radar applications are available.
In continuous non-contact level measurement with radar, the sensor sends microwave signals towards the medium from above. The surface of the medium reflects the signals back in the direction of the sensor. Using the received microwave signals, the sensor determines the distance to the product surface and calculates the level from it.

How does capacitance level measurement work?

Capacitive level sensor is a device that converts the change of the measured object position into capacitance. Capacitance level gauge has simple structure, high resolution, reliable operation and fast dynamic response. It can be measured non-contact, and can work under harsh conditions such as high temperature, radiation and strong vibration. It has been applied in various fields of industrial and agricultural production. But traditional capacitive level meters all use analog circuits. Because the dielectric constant of the measured medium changes. Stray capacitive interference. Temperature drift. Influence of scraping and other factors. The application range of the traditional capacitive liquid level gauge is limited.

Sino-Instrument offers magnetostrictive level sensor products. About 21% of these are sensors.

A wide variety of magnetostrictive level sensor options are available to you, such as analog sensor, digital sensor. You can also choose from intrinsically safe and explosion-proof. There are over 12 magnetostrictive level sensors w can supply. Magnetostrictive level sensor products are most popular in North America, Eastern Asia, and Africa.

You can ensure product safety by selecting from certified suppliers, including with ISO9001 certification. Customers choose us because our products have the best price, the best Cost-effective, and the best service.

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ULT-200A Ultrasonic fuel tank level sensor

Ultrasonic fuel tank level sensor, also called non-contact fuel meter, is an electronic level transmitter, measuring continuous liquid level, fluid level, or oil level.

ULT-200A Ultrasonic Level Transmitter, taking the advantage of various many levels measuring instruments is a universal one characterized, by total digitalized and humanized design.

Fuel Tank Level Sensor has been an important product, in the Level Measuring Instruments market over the past year, and it was very popular in India, the United States, Saudi Arabia, Canada, and Malaysia.

New: SI-LT Magnetostrictive level transmitter with Local Digital Display

Features of Ultrasonic fuel tank level sensor

ULT-200A Ultrasonic fuel tank level sensor

  • Sensor: Low power consumption, easy to install and locate, standard 4-20mA output, can be used as level gauge alone.
  • The probe can be made for IP68, anti-corrosion, explosion, small blind, low power consumption, large range 16 key operation.
  • Human-Machine communication can be more efficient.
  • Backup and recovery parameter set.
  • Measure for level, volume, weight.
  • Set a filter value to remove
  • Output HART, it can be direct communication with other instruments.
  • (Optional) Mini SD data collection and GPRS communication are optional. 

Specifications of ULT-200A Ultrasonic fuel tank level sensor

ItemSplit Type Ultrasonic Level Transmitter
Sense Range3m; 5m; 8m; 10m; 12m; 15m; 20m; 25m; 30m
Blind Area<0.3m-1.5m
Accuracy±0.3%F.S
DisplayLCD
Resolution1mm
Keyboard16 key
Output4~20mA(standard); 0~20mA; 1~5V; 0~5V; 0-10V; 1-10V; RS485; HART;
4 relays (Contact capacity AC:5A 250V DC:10A 120V)
Consumption<8W
MaterialABS
Secondary Meter Dimension240mm×184mm×110mm
Sensor SizeΦ41×100×Φ30 (for range:1 m); 
Φ55mm×119mm×G1 1/2 (for range:3 m); 
Φ74mm×135mm×M60 (for range:3~15 m)’ 
Φ109mm×200mm×M30 (for range: 16~35 m)
Installation SizeG1 1/2(3m); M60x2 (5-15m); M30X1.5 (20-30m)
Sensor Cable10m (optional)
Operating Surroundingsnormal temperature, normal pressure
Protection DegreeIP53 for instrument/
normal temperature, normal pressure

Working Principle of the ultrasonic level transmitter

Video source: https://www.youtube.com/watch?v=WY6Bj3f6piE

Extended reading: level sensors for fuel tanks

Ultrasonic fuel level sensors for challenging applications

All Sino-Instrument ultrasonic fuel level sensor models provide continuous, non-contact measurement (like radar), making them ideal for measuring fluids found in machine tools, like oil or hydraulic fluid,  that cannot be tainted by the introduction of foreign materials.

Our ultrasonic fuel level measurement modules can be programmed to account, for oscillations and turbulence, that could otherwise lead to incorrect readings.

Measurement clear to the bottom of the tank can be realized. 

Extended reading: Diesel fuel tank level gauges & indicators

Sino-Instrument’s ultrasonic tank level sensors feature an extremely broad operating temperature range.

They can operate in outdoor applications or extreme environments like commercial car washes, or outdoor fuel generators with no loss of performance or accuracy.

ULT-200A Ultrasonic fuel tank level sensor

Tank Level Measurements

Sino-Instrument’s ULT series level transmitters offer cost-effective, continuous level measurement and a wide range of features, to handle almost any tank level management task.  

Read more about: 7 Level Senors for Tank Level Measurement

Chemical Level Measurement

Many common chemicals can damage level sensors. Even stainless steel sensors can be quickly corroded by some chemicals.

Transducer elements and the adhesives that bond them to housings are especially susceptible to corrosive liquids and gases.

Special chemically resistant polymer housings are necessary for these environments.

Simply coated transducers or partially protected sensor housings may not offer enough protection.

Tank Level Display

A simple display will provide tank level in feet or meters.

With more advanced displays,

you can convert simple level measurements to engineering units like gallons, liters, pounds or kilograms.

Tank Level Alarms

Many tank level applications require alarms to be sounded when levels get above or below a certain point.

Tank Level Control

Ultrasonic level sensors may send measurements to a tank level controller, or ToughSonic sensors may control tanks directly using switches and relays.

Advanced Tank Level Measurements

Tank level measurements are sometimes complicated by conditions in the tank.

Structural obstacles such as supports or mixing equipment might be in the sensor measurement path.

Similarly, spray or foam can obscure the air-to-liquid interface that ultrasonic sensors detect.

These applications require more advanced sensor capabilities.

You may like:

sanitary flow meter

hydrostatic level sensor

How many types of level sensors are there?

There are many different kinds of level measurement transmitters, including:

  • Capacitance
  • Hydrostatic
  • Magnetic
  • Radar
  • Ultrasonic
  • Guided Microwave

Each of these transmitters works in different ways, making them useful for different types of processes.

These transmitters use liquid stored in a tank or container, as a dielectric medium between two or more electrodes.

The energy capacity of the capacitor circuit increases, when there is more liquid and decreases if there is less liquid. By measuring the variations in the capacitance value, capacitance level transmitters can calculate the current fill level of the tank or container.

Extended reading: What is a capacitive liquid level sensor?

Also known as pressure level transmitters, these transmitters help in determining fluid contents of a container, by measuring the pressure of the resting body of the fluid within it. The greater the force of liquid, the greater the volume of fluid.

These transmitters use a magnetic object, which is suspended in a buoyant float.

This is usually in a narrow auxiliary column, to restrict lateral movements of the float.

While the float is on top of the liquid, the movement of the float is measured by a different magnetic device.

This allows a precise and stable fill level to be transmitted. This method is suitable for continuous measurement, owing to the tendency of the float to rise or sink based on the liquid level.

These transmitters work on the principle of radar by using radio wave emissions.

These transmitters are normally mounted at the top of a tank filled with a liquid.

The transmitter sends a radar signal into the liquid and receives a reflection of the signal.

The transmitters then analyze the current fill level of the tank based on the time taken by the transmitted signal to return.

In this type of transmitter, an ultrasonic transducer is mounted at, or near the top of a container containing liquid.

The transducer sends out an ultrasonic pulse.

The pulse hits the surface of the liquid and gets reflected.

The sensor then calculates the fill level based on the time between the transmitted and received signal.

Magnetostrictive level sensor, is the best choice for water level measurement, diesel tank level, and fuel tank level measurement.

These transmitters work by sending a microwave pulse, through a sensor cable or rod.

The signal hits the surface of the liquid, and travels back to the sensor,and then to the transmitter housing.

The electronics integrated into the transmitter housing determine the filling level based on the time, taken by the signal to travel down the sensor and back up again.

These types of level transmitters are used in industrial applications, in all areas of process technology.

Learn more about Diesel fuel tank level gauges & Indicators

Featured Continuous level sensors

SI-U01 Float Level Sensor
SI-U02 Multi-Point Liquid Level Float Switch
SI-U03 Float Switch Water Level Controller
SI-U04 Magnetic Float Level Sensor-Reed Switch

Sino-Instrument offers 20 ultrasonic level detectors products.

About 13% of these are ultrasonic level transducers, 4% are ultrasonic level indicators.

A wide variety of ultrasonic level detector options are available to you, such as free samples, paid samples.

Sino-Instrument is the most important platform for Fuel tank level sensor product online wholesales,

they produce qualified Fuel tank level sensor and support OEM and customized designs.

Then How to choose a suitable Fuel tank level sensor products from Sino-Instrument?

Many customs rank power supply, and product name, accuracy as the most important factor,

For the power supply, you can choose dc24v, (standard 24vdc) and 12~36vdc.

The most important product name are level gauge, water level sensor, and diesel fuel tank level sensor,

The popular accuracy is 0.3%, 0.1% optional and 10mm.

Sino-Instrument is ultrasonic level transmitter suppliers, located in China.

Ultrasonic level detector products are most popular in North America, Mid East, and Eastern Europe.

The United States, and India, which export 99%, 1%, and 1% of ultrasonic level transmitter respectively.

You can ensure product safety by selecting from a certified supplier, with ISO9001, ISO14001 certification.

Request a Quote

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ULT-200 Ultrasonic Liquid Level Sensor

Ultrasonic Liquid Level Sensor can realize non-contact liquid level measurement. Continuous online monitoring of water level and sludge interface position.

ULT-200 Ultrasonic Liquid Level Sensor is a split type ultrasonic liquid level/level sensor. Measuring liquid level and converting it to an electrical signal. Non-contact liquid level measurement can be achieved. Split ultrasonic level gauges are widely used for liquid level and volume measurement of tanks, pools, and reservoirs. It can also be used for flow measurement in open channels.

Sino-Inst offers a variety of  Ultrasonic Level Sensors for level measurement. If you have any questions, please contact our sales engineers.

Features of Ultrasonic Liquid Level Sensor

  • The distance accuracy can be calibrated online in different environments, the start and end points of the range, and the type of analog output. The lock value of the liquid level window can be set by the keyboard.
  • Automatically track the ambient temperature to compensate for the distance value.
  • With 2-4 limit settings. Can be used for liquid level segment or position control (optional).
  • With RS485/232 serial data output or 4-20mA/0-20mA analog output or 1-5V/0-5V analog output (optional).
  • With “echo intelligent recognition” function and “medium slope” digital filtering function.
  • For Xiaotong’s measurement target, the user can set the detection cycle from 100 times to 0.1 times per second;
  • With the option of value-added/difference ranging mode, both ranging and position measurement can be performed.
  • It can be operated by keyboard. Turn on the backlight of the LCD display at night for easy viewing and debugging. You can also turn off the display during work to save energy.
  • It has 1-15 levels of transmission power options, which can be set and modified at any time according to the working conditions.
  • It has functions such as temperature compensation, window locking and anti-interference error correction, medium sound velocity adjustment (optional when ordering).
  • It has the function of arbitrarily digitizing the start and end of the full scale.
  • It has an artificial digital correction platform for temperature difference compensation in the acoustic wave transit area.
  • With 4mA, 20mA digital fine-tuning function, debugging is very convenient and quick.
  • When the LCD displays, the display information is very rich, from the level, weight, temperature, current, voltage, limit switch status and other information are all displayed on the LCD screen, so that the user can know the working status of the instrument.
  • Serial data transmission can be sent either point-to-point or bus type.

Extended reading: Sludge flow meter for sewage treatment return activated sludge system

Specifications of ULT-200 Ultrasonic Liquid Level Sensor

FeaturesSplit type
Range5 meters, 10 meters, 15 meters, 20 meters, 30 meters,
40 meters, 50 meters, 60 meters, 70 meters,
measurement accuracy0.5%-1.0%
Resolution3mm or 0.1% (whichever is greater)
displayChinese LCD
Analog output4~20mA/510Ω load
Relay output(Optional) Single channel is 2 groups,
dual channel is 4 groups AC 250V/ 8A or DC 30V/ 5A state programmable
powered byStandard 220V AC+15% 50Hz
Optional 24VDC 120mA
Customized 12VDC or battery power supply
Ambient temperatureDisplay instrument -20~+60℃,
Probe -20~+80℃
CommunicationOptional 485, 232 communication (factory agreement)
Protection levelDisplay instrument IP65, probe IP68
Probe cableUp to 100 meters, standard 10 meters
Probe installationAccording to the range and probe selection
Dimensions of ULT-200 Ultrasonic Level Detector

Extended reading: Radar Non Contact Water Level Sensor

Applications of Ultrasonic Liquid Level Sensor

  • River and reservoir level measurement
  • Tank measurement
  • Reservoir
  • Water tank water tower
  • Acid-base tank level monitoring
  • Reactor/tank/liquid level measurement
  • Manhole
  • Municipal Engineering
  • Tap water
  • Sewage treatment
  • Water Resources and Hydropower
  • Urban rivers and lakes, transportation and food processing industries
  • Sewage treatment plant: primary sedimentation tank, secondary sedimentation tank, thickening tank, etc.
  • Water supply plant: sedimentation tank
  • Coal washing plant: sedimentation tank
  • Power plant: mortar sedimentation tank, etc.

More about Application 1: Liquid Level Monitoring In The Food And Beverage Processing.

Ultrasonic Level Measurement Principle

How does ultrasonic level measurement work?

When Ultrasonic Liquid Level Sensor is working, high-frequency pulse sound waves are emitted by the transducer (probe). The surface of the measured object (water surface) is reflected. The returned reflected echo is received by the same transducer (probe) and converted into an electrical signal.

The time between the sending and receiving of the pulse (the movement time of the sound wave) is proportional to the distance from the transducer to the surface of the object. The relationship between the distance S of sound wave transmission and the speed of sound C and transmission time T can be expressed by the formula: S= CⅩT/2

Extended reading: Case Study: Automatic Sludge Blanket Level Detector

The installation of ultrasonic level meter must consider the blind area of ​​ultrasonic level meter. When the liquid level enters the blind zone, the ultrasonic transmitter cannot measure the liquid level. Therefore, when determining the range of the ultrasonic level gauge, a margin of 50 cm must be left. When installing, the transmitter probe must be about 50 cm above the high liquid level. Only in this way can we ensure the accurate monitoring of the liquid level and the safety of the ultrasonic level gauge.

Pay attention to the mechanical installation:

The installation should be perpendicular to the surface of the object to be measured, avoid using it to measure foamy objects. Avoid installation where the distance from the surface of the measuring object is less than the blind spot distance. Blind spot: Each product has a standard, which is known with the product. It should be considered that the beam avoids the blocking material and does not meet the filling mouth and the container wall. When detecting large solid objects, the probe position should be adjusted to reduce the measurement error.

Extended reading: Guide to Ultrasonic Level Transmitters

More Featured Ultrasonic Level Sensors for Tanks

Extended reading: Ultrasonic level transmitter for Hazardous Liquids

Ultrasonic Liquid Level Sensor Advantages and Disadvantages

The advantages of ultrasonic liquid level sensor are very outstanding. It is mainly reflected in the following aspects:

  1. The structure is simple. The reading is convenient. It is very easy to install and maintain.
  2. Safe and clean. The instrument has long service life. The measurement is stable and reliable with high precision.
  3. Adopt non-contact measurement. It is not easily affected by the viscosity and density of the liquid.

Of course, the ultrasonic liquid level sensor also has its own limitations and insurmountable defects. Specifically, it is mainly manifested in:

  1. There is a blind spot in the ultrasonic liquid level measurement. The dead zone is the area where the meter cannot measure. During the transmission of ultrasonic pulses, a small area near the ultrasonic transducer usually cannot receive sound waves. The blind zone where sound waves cannot be received is related to the measurement distance of ultrasonic waves. Generally speaking, the smaller the measurement distance, the smaller the blind zone. The larger the measurement distance, the larger the blind zone;
  2. Ultrasonic liquid level measurement is easily affected by temperature. In the actual measurement, the change of temperature will cause the change of sound speed. This will lead to errors in the measurement;
  3. There should be no obstacles under the sound wave. Because the ultrasonic liquid level meter uses the principle of sound wave reflection to achieve liquid level measurement. If there are obstacles, it will affect the ultrasonic emission, causing signal loss and affecting the measurement effect;
  4. Ultrasonic liquid level sensor should not be used to measure pressure vessels. Because the pressure mainly affects the probe. There is also a certain relationship between the pressure and the temperature. The change in pressure will affect the change in temperature. This will affect the change in the speed of sound. The accuracy of the measurement will be affected;
  5. Ultrasonic liquid level sensor can not be used in the occasions with water mist, medium that is easy to produce a lot of foam, and volatile medium. Because this kind of working condition is easy to absorb the sound wave or interfere with the sound wave emission, the signal is lost and the accuracy is reduced;
  6. Ultrasonic liquid level sensor is greatly affected by dust. This is because although the dust environment has little effect on the speed of sound, it has a very significant effect on the attenuation of sound waves. Therefore, it is best not to use an ultrasonic level gauge in the presence of dust.

Extended Reading: Procurement Guide for Ultrasonic liquid level sensors

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Sino-Inst offers 20 ultrasonic level detectors products. About 13% of these are ultrasonic level transducers, 4% are ultrasonic level indicator. A wide variety of Ultrasonic liquid level sensor options are available to you, such as free samples, paid samples.

Sino-Inst is ultrasonic level transmitter suppliers, located in China.

UltraUltrasonic liquid level sensor products are most popular in North America, Mid East, and Eastern Europe. The United States, and India, which export 99%, 1%, and 1% of ultrasonic level transmitter respectively. You can ensure product safety by selecting from a certified supplier, with ISO9001, ISO14001 certification.

Request a Quote

Please enable JavaScript in your browser to submit the form

TKWL-1600 Ultrasonic Level Transducer

Ultrasonic Level Transducer, also called Ultrasonic level sensor, or ultrasonic level transmitter.
Ultrasonic level meter (measuring material level, liquid level) is a non-contact, highly reliable, cost-effective, and easy-to-install and maintain level measuring instrument. It can meet most of the level measurement requirements without contacting the medium.

Features of Ultrasonic Level Transducer

  • The large measuring range can reach 40m, and the solid material level measurement can reach 25m.
  • The small resolution is 1mm.
  • Large LCD/LED display.
  • Intelligent signal processing technology.
  • All plastic anticorrosive shell: protection grade IP67.
  • Transducer structure: There is no requirement for flange connection length when the small range level meter is flanged.
  • Simple button setting parameters: no need to wait for the container to empty or fill up, no need for an additional remote control.
  • Flexible installation methods: thread (flange), fixed hole (bracket).
  • The probe can be extended: it is suitable for outdoor installation in a closed container in cold areas to prevent frost.
  • Equipped with high and low double relays: the four-wire system provides this function.
  • AC and DC power supply forms are optional: four-wire system and split machine mainframe provide this function.

Ultrasonic level gauge and other level gauge technologies

  1. Compared with laser ranging technology, it has the advantages of simplicity and economy;
  2. Ultrasound technology generally does not require moving parts, so installation and maintenance are relatively convenient;
  3. Ultrasonic level meter can not only fix point and continuous position measurement, but also can conveniently provide signals required for remote measurement or remote control;
  4. Compared with the radioactive location technology, the ultrasonic level meter does not require protection.

Technical characteristics

  1. Transducer with strong emission power. The surface can be self-cleaning. The use of updated transducer structure and manufacturing technology. The working performance of the transducer is significantly improved.
  2. Microprocessor program control and intelligent signal processing technology can realize a variety of typical working condition software processing modes. The level meter can adapt to complex working conditions such as solids, liquids, and dust.
  3. Infrared remote control programming adjustment, simple and reliable operation, and with LCD on-site display.
  4. Non-contact continuous measurement, reducing maintenance;
  5. It can be used to measure level, space and distance, and can also perform automatic level-volume conversion for standard or special switch tanks;
  6. The LCD with backlight can display according to standard engineering units.

Specifications of Ultrasonic Level Transducer

FeaturesIntegral typeSplit type
Range5 meters, 10 meters, 15 meters, 20 meters, 30 meters, 40 meters, 50 meters, 60 meters5 meters, 10 meters, 15 meters, 20 meters, 30 meters, 40 meters, 50 meters, 60 meters, 70 meters,
measurement accuracy0.5%-1.0%0.5%-1.0%
Resolution3mm or 0.1% (whichever is greater)3mm or 0.1% (whichever is greater)
displayChinese LCDChinese LCD
Analog output4-wire 4~20mA/510Q load; 2-wire 4~20mA/250Q load4~20mA/510Q load
Relay outputOptional 2 groups of AC250V/8A or DC; 30V/5A state programmable(Optional) Single-channel is 2 groups, dual-channel is 4 groups AC250V/8A or DC30V/5A state programmable
powered byStandard 24VDC; optional 220VAC+15%50HzStandard 220VAC+15%50Hz; optional 24VDC120mA; customized 12VDC or battery power supply
Ambient temperatureDisplay instrument -20~+60℃, probe -20~+80℃Display instrument -20~+60℃, probe -20~+80℃
CommunicationOptional 485,232 communication (manufacturer agreement)Optional 485,232 communication (manufacturer agreement)
Protection levelDisplay instrument IP65, probe IP68Display instrument IP65, probe IP68
Probe cablenoUp to 100 meters, standard 10 meters
Probe installationAccording to the range and probe selectionAccording to the range and probe selection

Ultrasonic level meter application

Liquid level and material level measurement is a problem frequently encountered in the industry. Ultrasonic positioning technology has many advantages. It can not only fixed-point and continuous positioning. And it can conveniently provide signals required for telemetry or remote control.

Compared with radioactive location technology, ultrasound technology does not require protection.
Compared with laser-ranging technology, it has the advantages of simplicity and economy.
At the same time, ultrasound technology generally does not require moving parts. Therefore, it is relatively convenient to install and maintain.

Ultrasonic level gauges can be widely used in petroleum, mining, power plants, chemical plants, water treatment plants, sewage treatment stations, agricultural water, environmental monitoring, food (brine industry, beverage industry, additives, edible oil, dairy products), flood control Flood prevention, hydrological monitoring, open channels, spatial positioning, and many other industries.

Read more about: Application 1: Liquid Level Monitoring In The Food And Beverage Processing

Learn More: Sanitary ( hygienic ) Pressure Transmitter

Magnetostrictive level sensor

What is ultrasonic level measurement?

Ultrasonic waves detect an object in the same way as Radar does it.

Ultrasonic uses sound waves, and Radar uses radio waves.

When the ultrasonic pulse signal is targeted towards an object, it is reflected by the object, and the echo returns to the sender.

The time traveled by the ultrasonic pulse is calculated, and the distance of the object is found.

Bats use a well-known method to measure the distance while traveling.

The ultrasonic level measurement principle is also used to find out fish positions in the ocean, locate submarines below water level, also the position of a scuba diver in the sea.


Level = Speed of sound in air x Time delay / 2

Ultrasonic level transducer working principle

working principle of ULT-100A

During level measurement. The ultrasonic signal is sent out by the ultrasonic probe. Fold back after being reflected on the surface of a liquid or solid material. It is received by the same probe and measures the entire running time of the ultrasonic wave, so as to realize the level measurement. The relationship between sound wave transmission distance and sound speed and sound transmission time can be expressed by the formula:

The calculation formula of the ultrasonic level meter The calculation formula L of the ultrasonic level meter: the distance between the ultrasonic probe and the measured material surface. Unit: m;

v: Sound velocity value after temperature compensation. Unit: m/s;

t: The running time of the sound wave in the measuring range. Unit: s

Extended reading: The Secret of Ultrasonic Level Measurement

Introduction to the main indicators of Ultrasonic Level Transducer

  1. Range.
    It represents the large range that the ultrasonic level meter can measure and reflects the sensitivity of the transducer.
    The larger the range, the higher the sensitivity.
    The ultrasonic level meter can be equipped with transducers of different ranges such as 4, 6, 8, 10, 20, 30m.
    When the ultrasonic attenuation is fast and the interface reflection is poor. In order to avoid the ultrasonic signal received by the ultrasonic probe is too weak. If it cannot be distinguished from the noise signal, it is necessary to increase the transmitting power of the transducer.
  2. Blind area.
    It is also called the dead zone, which is a distance that cannot be measured by the ultrasonic level meter.
    When the ultrasonic level meter transmits ultrasonic pulses, it cannot detect the reflected echo at the same time.
    Because the transmitted ultrasonic pulse has a certain time width. At the same time, the sensor still has after-vibration after transmitting the ultrasonic. During this period, the reflected echo cannot be detected. Therefore, a small distance from the probe surface downward cannot be detected normally, and this distance is called a blind zone.
    For products with the same measuring range, the smaller the blind zone, the better the design of the transducer.
  3. Temperature.
    The normal range is -10~60 degrees Celsius.
    Although the limit working temperature of piezoelectric ceramics is generally 150 degrees Celsius. However, most of the materials in the manufacturing process of the ultrasonic level gauge cannot work for a long time at a temperature above 100 degrees Celsius.
  4. Precision.
    It is mainly affected by temperature changes to ensure measurement accuracy. Most ultrasonic level meters are equipped with temperature compensation.
    In addition, changes in the gas composition will also affect the accuracy of the ultrasonic level gauge. For example, some volatile liquids. After volatilization, the air composition changes and the sound velocity of the gas changes, causing measurement errors. Most manufacturers can control the accuracy within 0.5% under normal temperature and pressure and without interference from the external environment.
  5. Two-wire system and three-wire system.
    The power supply (DC24v) and signal output (DC4-20mA) of the two-wire ultrasonic level meter share the same circuit. That is, only two wires are used. The disadvantage is that the transmit power is relatively weak.
    The three-wire ultrasonic level meter is actually a four-wire system. Its power supply (DC24v) and signal output (DC4-20mA) loops are separated. Two wires are used for each. When their negative ends are connected to the common ground, three wires are usually used . Its advantage is that the transmit power is larger.

Extended reading: Applicaitons Of Magnetostrictive Level Transmitters

Ultrasonic Level Transducer measurement influencing factors

Various factors will affect its stable and reliable measurement when it is actually used in the field. Below we will combine the actual situation to describe the influence of various interferences on the selection, use and installation of ultrasonic level meters.

(1) The influence of medium and ambient temperature

When the ultrasonic wave is reflected from the surface of the material, its reflection frequency will be affected by the temperature of the material and change. In order to compensate for this change, a temperature sensor is installed in the ultrasonic probe. When the probe sends the reflected signal to the processor at the same time. The temperature signal is also sent to the microprocessor, and the processor will automatically compensate for the influence of temperature on the level measurement.

In addition, in order to ensure the reliable operation of the probe, it is required that the ambient temperature does not exceed 60°C.

(2) The influence of the agitator on the measurement of the level meter

If the material container is equipped with a stirrer, it will also reflect the ultrasonic signal, causing false reflection echo, which is transmitted to the microprocessor.

The microprocessor will process the true and false mask echoes based on statistical principles, so it is required that the echo reflected by the ultrasonic wave from the surface of the material should be at least 3 times the echo reflected from the stirrer arm.

Appropriately reduce the speed of the stirrer, or move the probe away from the stirring center. Both can effectively eliminate the influence of the false surface reflection produced by the agitator on the level measurement.

(3) Ultrasonic level meter measures the limit value of the material level

1) High material level

When an ultrasonic pulse is transmitted to the surface of the material, if it receives a reflected wave from the surface of the material, it will not be able to measure, and this distance is a blind zone. The material level shall not be higher than the blind zone.

2) Low material level

The di level is the distance from the sensor that the ultrasonic wave can reach. And the reflected echo can be received by the sensor. Due to the attenuation of ultrasonic waves in the propagation process and the absorption of sound waves on the surface of the material, this propagation distance is strongly dependent on the nature of the material.

In short, as long as the instrument is selected and installed properly, the application effect of the ultrasonic level gauge is quite satisfactory.

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

More Featured Products

Sino-Instrument offers 20 ultrasonic level transducers products.

About 13% of these are ultrasonic level transmitters, 4% are an ultrasonic level indicator.

A wide variety of ultrasonic level transducer options are available to you, such as free samples, paid samples.

Sino-Instrument is an ultrasonic level transmitter supplier, located in China.

Ultrasonic level transducer products are most popular in North America, Mid East, and Eastern Europe.

The United States, and India, which export 99%, 1%, and 1% of ultrasonic level transmitters respectively.

You can ensure product safety by selecting from a certified supplier, with ISO9001, ISO14001 certification.

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LD series Rigid Probe Magnetostrictive Level Transmitter

Magnetostrictive level transmitter also known as Magtech LTM Level Transmitter. The magnetostrictive level transmitter realizes continuous liquid level measurement of the tank.

Magtech magnetic level indicator is Emerson’s name for magnetostrictive liquid level transmitter. Magnetostrictive liquid level gauge can perform continuous liquid level and interface measurement. The magtech magnetic level indicator uses magnetostrictive technology to measure the liquid level. The measured value is then transmitted back to the control system.
LD series magnetostrictive level sensor adopts hard measuring rod. Can be used with a variety of floats. With the flange, the liquid level sensor is installed in any liquid tank, filling and metering machinery.

Sino-Inst offers a variety of magnetostrictive level transmitters for industrial level measurement. If you have any questions, please contact our sales engineers.

Features of LD series Magnetostrictive Level Transmitter

LD series rigid rod-type liquid level sensor is sturdy and reliable. It is easy to install and does not need daily maintenance and calibration. Stainless steel measuring rods and floats are not affected by the physical and chemical properties of the liquid medium.

No matter the liquid medium has steam, foaming, condensation, foam, boiling, corrosion. Or there is special conductivity, dielectric constant, pressure And vacuum environment. The sensor can be unaffected, accurate, real-time transmission of level signals over long distances. Under special circumstances, Teflon coating can be applied externally.

The sensor can be installed directly or through flange in any common liquid tank and metering equipment. Double float measurement is available. One float measurement liquid / liquid interface and one float measurement liquid / vapor interface.

● Sturdy and reliable. Waterproof and stain resistant;
● Absolute output. No need for regular calibration and maintenance;
● Zero point / full scale point can be adjusted arbitrarily;
● Low power consumption design. Effectively reduce the system temperature drift;
● High precision. The highest 0.1mm liquid level measurement accuracy;
● Side outlet. Easy to install;
● Built-in terminal inside. Support field wiring;
● Support liquid level / interface double float level measurement.

Specifications of LD series Magnetostrictive Level Transmitter

Product name LD series liquid level sensor
Measuring range100mm ~ 5000mm or customized according to customer needs
Humidity dew point90% humidity, no frost
Output signalAnalog output, Modbus output
Resolution16-bit D / A or minimum 0.01mm
Temperature Coefficient<< 50ppm / ℃
Electrical protectionIP68
Operating temperature-40 ℃ ~ + 85 ℃
Number of floats1: liquid level or 2: interface
Outgoing wayStraight cable, side cable
Input voltage24VDC (-15 / + 20%)
Installation methodThread M18 * 1.5, matching flange (optional)
Rod structureRigid rod. 304L stainless steel, optional PTFE coating
Electronic warehouseAnodized aluminum alloy
Float304L stainless steel, optional PTFE coating
Explosion-proofExdIIBT5, please consult technical support for details.

Applications of LD series Magnetostrictive Level Transmitter

Industries served:Applications:
Oil and GasPosition Sensing
PetrochemicalSanitary Service
ChemicalValve Positioning
Power GenerationInventory Control
Water and wastewater treatmentCorrosive Process
Pulp and PaperUnderground Tanks
BiotechPrimary Level/Interface
Marine  Process Temperature and Level

LMT Series Magnetostrictive Level Transmitter – Applications

Video source: https://www.youtube.com/watch?v=GTZNuJ9u1dI

What is magnetostrictive level transmitter?

Magnetostrictive Level Sensor

Magnetostriction means that the change of the magnetization direction in ferromagnetic substance will cause the change of the medium lattice spacing. As a result, the length and volume of the ferromagnetic substance change.

Magnetostrictive level transmitter is a level transmitter based on the principle of magnetostriction. It is a high-precision, high-resolution transmitter driven by a magnetic float.

Magnetostrictive Level Transmitter working principle

Magnetostrictive Level Sensor Operating Principle
  1. When the sensor of the magnetostrictive level transmitter works, the circuit part of the sensor will excite a pulse current on the waveguide wire.
  2. When this current propagates along the waveguide wire, a pulsed current magnetic field is generated around the waveguide wire.
  3. There is a float outside the sensor rod of the magnetostrictive liquid level gauge. This float can move up and down along the rod with the change of liquid level.
  4. Inside the float there is a set of permanent magnetic rings. When the pulsed current magnetic field and the magnetic ring magnetic field generated by the float want to meet. The magnetic field around the float changes so that the waveguide wire made of magnetostrictive material generates a torsional wave pulse at the position of the float.
  5. This pulse is transmitted back along the waveguide wire at a fixed speed and detected by the detection mechanism.
  6. The position of the float, that is, the position of the liquid surface can be accurately determined by measuring the time difference between the pulse current and the torsional wave.
Pictures from the Internet

Technical advantages of magnetostrictive level transmitter:

-The magnetostrictive level transmitter is suitable for the level measurement of the clean liquid level required by high precision. The accuracy reaches 1mm. The accuracy of the latest products can already reach 0.1mm.

-Magnetostrictive liquid level gauge can also be used to measure the boundary between two different liquids.

-Explosion-proof design, suitable for dangerous occasions.

-Intelligent electronic circuit design can calculate the volume.

-The only moving part is the float, and the maintenance is extremely low.

You may like: Magnetic Float Level Sensor-Reed Switch

Float Level Sensor

Multi-Point Liquid Level Float Switch

Magnetostrictive level transmitter installation

1. Thread / flange installation:

As shown in the figure, the product should be installed vertically and the installation slope should not be greater than 5 degrees: when installing the float, the ON (upper) marked hemisphere should be above the liquid level:

The dead ends are measured at both ends of the measuring rod; the lower end and the bottom end of the rod should be flush when the locking ring is fixed.

This method is suitable for most liquid tank measurements. You can use the manufacturer’s connection flange or user-specified flange to screw the liquid level sensor mounting thread directly into the flange.

2. Use the active connector to install:

The sensor rod contacts the bottom of the tank, and the sensor is fixed by the movable joint of the electronic warehouse. The probe can be arbitrarily slid up and down to change the insertion depth of the probe. The sensor electronic warehouse and the lead-out cable are in the oil tank.

Note: Please tighten the compression nut and perform a pressure test to ensure the stability of the movable joint.

3.  The positioning ring mounting:

The sensor rod contacts the bottom of the tank, and the positioning ring of the electronic compartment prevents the sensor from swinging. The sensor electronic compartment and the lead-out cable are in the oil tank.

Note: h = tank height H=h+ riser height

D=Φ100mm Standpipe height ≥300mm

4. External installation:

Magnetostrictive level transmitter price

The price of a magnetostrictive level transmitter is determined based on the measurement conditions. Sino-Instrument is a manufacturer of magnetostrictive level gauges. We offer magnetostrictive level gauges at the right price.

Selection considerations:   

1. The selection of the level gauge should be consistent with the environment of the media on the site. Including ambient temperature, pressure, vibration, shock, compatibility of structural materials and media, etc.   

2. When the temperature of the measured medium is high (100 ~ 200), it is recommended to choose a probe with an outer float type and use a side flange installation. When the temperature is higher (200 ~ 300), it is recommended to choose a probe with a side-bundled type with an outer float, and install it with a side flange.   

3. There are measurement dead zones at the upper and lower ends of the measuring rod of the magnetostrictive level gauge, which should be considered when selecting the range.   

4. The size of the stainless steel magnetic float commonly used for level gauges is Ф45 × 56 × Ф15, and flange connection of DN50 or above is required. For the liquid level gauge with thread connection, users need to install flange or bracket.

More Level Senors for Tank Level Measurement

Radar level transmitter, also called Radar level gauge. Non-contact Continuous level measurement in liquids and solids with free space radar sensors. Non-contacting radar, based on microwave technology, detects only surfaces that reflect energy. These transmitters work on the principle of a radar by using radio wave emissions. Mounted at the top of a tank filled with a liquid. The transmitter sends a radar signal into the liquid, and receives a reflection of the signal. The transmitters then analyze the current fill level of the tank based on the time taken by the transmitted signal to return.

Read more about: List of Radar Level Sensors

Hydrostatic level transmitters, also called submersible level transmitter, or pressure level transmitters. For Hydrostatic level measurement, Continuous level measurement in liquid applications with pressure sensors. These transmitters help in determining fluid level of a container. By measuring the pressure of resting body of the fluid within it.

Read more about: Static Pressure/Hydrostatic Pressure Transmitter

Guided Wave Radar (GWR) Level Transmitters, also called wave guided radar level transmitter. Using guided wave radar technology, GWR level transmittershave no moving parts. They can measure both level and the interface between two media. Continuous level measurement in liquids and solids with guided wave radar sensors. These transmitters work by sending a microwave pulse through a sensor cable or rod. The signal hits the surface of the liquid, and travels back to the sensor, and then to the transmitter housing. Based on the time taken by the signal to travel down the sensor and back up again. The electronics integrated in the transmitter housing determine the filling level.

Read more about: Level Measurement | Radar-Guided Wave Radar Level Meter

Ultrasonic Level Indicator, also called Ultrasonic level sensor, or ultrasonic level transmitter. In this type of transmitter, an ultrasonic transducer is mounted at, or near the top of a container containing liquid. The transducer sends out an ultrasonic pulse. The pulse hits the surface of the liquid, and gets reflected. The sensor then calculates the fill level based on the time between the transmitted and received signal.

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

More Featured Level Transmitters

Frequently
Asked
Questions

The level of the liquid medium in the container is called the liquid level. And the instrument that measures the liquid level is called the liquid level transmitter. Level transmitter is a kind of level instrument. There are two types of level transmitterss, one is continuous and the other is point-off. The continuous level transmitter is a real-time monitor of the height of the liquid in the container. The point type, which generally takes two points, high and low, and outputs an alarm signal when the medium in the container reaches these two points.The types of liquid level transmitters is very wide. Specific include: magnetic flap liquid level gauge, tuning fork vibration type, differential pressure type, pressure type. Ultrasonic, magnetostrictive liquid level gauge, magnetic flap, radar and so on.
Levels of media such as: water, viscous fluids, and fuels, or dry media such as bulk solids and powders can be measured using the transmitter.
Level measurement transmitter are used in a myriad of applications that require level measurement within containers or tanks. These transmitters often find their application in material handling, food and beverage, power, chemical, and water treatment industries.

Radar level transmitter is a kind of liquid level transmitter which uses the principle of radar operation.
Radar Level Sensor also called radar level transmitter, are the indicating transmitter for liquid level.
Non-contact Continuous level measurement in liquids and solids with free space radar sensors.
RADAR (Radio Detection And Ranging) is a device which can detect the presence of faraway objects by obtaining a reflection of electromagnetic waves emitted from the device itself. Although invented much earlier, wide deployment of radar was done by Britain during the Second World War to detect oncoming German bombers.
Radar level measurement is a safe solution. Even under extreme process conditions (pressure, temperature) and vapors. Various antenna versions for every kind of radar applications are available.
In continuous non-contact level measurement with radar, the sensor sends microwave signals towards the medium from above. The surface of the medium reflects the signals back in the direction of the sensor. Using the received microwave signals, the sensor determines the distance to the product surface and calculates the level from it.

Ultrasonic sensors are sensors developed using the characteristics of ultrasound. Ultrasound is a mechanical wave with a vibration frequency higher than that of sound waves. It is caused by the vibration of the transducing wafer under the excitation of voltage. It has high frequency, short wavelength and small diffraction phenomenon.

In particular, it has good directivity, and can be ray and directional propagation. Ultrasound has a great ability to penetrate liquids and solids. Especially in the opaque solids of sunlight, it can penetrate a depth of tens of meters.

Ultrasonic waves encountering impurities or interfaces will produce significant reflections and form reflections. Doppler effect can be generated when touching moving objects. Therefore, ultrasonic testing is widely used in industrial, national defense, biomedical and other fields.

To use ultrasound as a means of detection, ultrasound must be generated and received. The device that accomplishes this function is an ultrasonic sensor. It is customarily called an ultrasound transducer, or ultrasound probe.

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Sino-Inst offers over 10 Magnetostrictive level transmitters for level measurement.

Magtech magnetic level indicator is an innovative product with high precision and high reliability. Its appearance solves the liquid level and interface measurement under extremely harsh working conditions.

Due to the use of magnetostrictive technology, the measurement process is not affected by changes in factors such as temperature, pressure, and dielectric constant. It has the characteristics of high precision, high stability, and maintenance-free. It avoids the defects of traditional electric floats, differential pressure transmitters, radars and other liquid level products in the field application. Therefore, it is widely used in high-precision measurement of various liquid levels and interfaces.

About 50% of these are used as oil level meters, 40% is the oil-water interface meter. A wide variety of level meters options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of Magtech magnetic level indicator instrumentation, located in China.

Magnetic Level Transmitter products are most popular in North America, Domestic Market, and South America. You can ensure product safety by selecting from certified suppliers, with ISO9001, and ISO14001 certification.

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

Request a Quote

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SI-80 Radar Level Sensors

Radar level measurement

Radar Level Sensor also called radar level transmitter,

are the indicating transmitter for liquid level.

Non-contact Continuous level measurement in liquids and solids with free space radar sensors

In continuous non-contact level measurement with radar,

the sensor sends microwave signals towards the medium from above.

Non-contact radar continuously measures the level of powders, granules, solids, or liquids in a vessel.

The surface of the medium reflects the signals back in the direction of the sensor.

Using the received microwave signals, the sensor determines the distance to the product surface

and calculates the level from it.

Pulse radar transmitters using a lower frequency are more commonly used in liquids,

and perform in diverse tank shapes and environmental conditions.

For usage in a wide range of applications,

be it in the simple water tank, in corrosive or aggressive media,

or high accuracy liquid level applications.

Radar Level Sensor Features

  • Non-contact, continuous level measurement over larger ranges
  • Unaffected by sludge and biomass, dust, foam, oil, grease and other coatings, uneven surfaces, turbulence, pressure, and vacuum
  • Single frequency radar level sensors for liquid sensing, dual frequency radar level sensors for level measurement of aggregates, gravel, sand, coal, asphalt, and other solids
  • Simple mounting and push-button calibration

Radar level sensor advantages and disadvantages

The advantages:

  • Measurement is not affected by temperature, pressure or dust
  • User-friendly adjustment saves time
  • Non-contact, continuous level measurement over larger ranges
  • Unaffected by sludge and biomass, dust, foam, oil, grease and other coatings, uneven surfaces, turbulence, pressure, and vacuum
  • Single frequency radar level sensors for liquid sensing, dual frequency radar level sensors for level measurement of aggregates, gravel, sand, coal, asphalt, and other solids
  • Simple mounting and push-button calibration

The disadvantages

  • Very sensitive to build-up on the sensor surface.
  • They are very expensive. Price increases with accuracy.

Sino-Instrument can offer you a better price for all kinds of Radar Level Sensor, for level measurement.

You may like: the Magnetostrictive level sensor

1. Working Principle of Non-Contacting Radar Level Sensors/Gauges (Unguided Wave)

Antenna system to launch and microwave receiving energy is a very low, very short pulse.

Radar waves travel with the speed of light.  

The running time can be through the electronic components are converted into a signal.

Measurement of this special time extension method can realize stable,

accurate in a very short period of time.

Even if the condition is very complex, the presence of false echo,

with the latest micro-processing technology and debugging software,

also can analyze the level echo accurately.

Operating Principle of Non-Contacting Radar Level Sensors/Gauges (Unguided Wave)

Microwave antenna to receive the reflected pulse,

and transmitted to the electronic circuit, a microprocessor to signal to process

to identify the micropulse generated on the material surface echo.

Echo recognition is completed by the pulse system,

the accuracy can reach the millimeter level.

From the material surface distance between D and T pulse is proportional to the time travel:

D=C×T/2

Where C is the speed of light

Because of the air tank is a known distance E, L:

L=E-D

By setting the empty tank height E (= zero),

the full height of F (= full scale) and some application parameters,

application parameters automatically make the instrument to measure the environment.

4 – 20mA with corresponding output.

2. Level measurement with Radar- Applications

6GHz radar level gauge is suitable for liquid, paste,

granule and block material level and non-contact measurement,

suitable for changes in temperature, pressure big;

there is an inert gas and volatile.

The measurement method of microwave pulse can work normally in the industrial frequency band range.

The beam energy is low, can be installed on all kinds of metal,

non-metallic container or pipe, no harm to human body and environment.

3. SI-80 series Radar Level Sensors

  • 801 Radar Level Sensor
801 Radar Level Sensor
  • Suitable for Medium: Liquid, slightly corrosive liquid
  • Suitable for Medium: Liquid, slightly corrosive liquid
  • Explosion-proof Grade: Exia IIC T6 Ga/ Exd IIC T6 Gb
  • Measuring Range: 20m
  • Frequency: 6 GHz
  • Temperature: (-40 ~ 130) ℃
  • Measurement Accuracy:  ±10mm
  • Process Pressure: (-0.1 ~ 0.3) MPa
  • The signal Output: (4 ~ 20) mA/HART
  • The Scene Display: Four LCD /Can be programmed
  • Power Source: Two-wire (DC24V)
  • Four-wire(DC24V / AC220V)
  • Repeatability: ± 1mm
  • Outer Covering: Aluminum /Plastic / Stainless steel
  • Connection: Flange (optional) / Thread
  • 802 Radar Level Sensor
802 radar level sensor
  • Suitable for Medium: Liquid, especially for corrosive liquid
  • Explosion-proof Grade: Exia IIC T6 Ga/ Exd  IIC T6 Gb
  • Measuring Range: 20m
  • Aerials: The Rod Antenna (PTFE)
  • Frequency: 6 GHz
  • Temperature: -40℃~130℃(Standard type)
  • -40℃~180℃(High temperature type)
  • Measurement Precision: ± 10mm
  • Process Pressure: (-0.1 ~ 1.6) MPa
  • The Signal Output: (4 ~ 20) mA/HART
  • The Scene Display: Four LCD /Can be programmed
  • Power Source: Two-wire (DC24V)
  • Four-wire(DC24V/AC220V)
  • Repeatability: ± 1mm 
  • Outer Covering: Aluminum / Plastic / Stainless steel
  • Connection: With PTFE plate flange

  • 803 Radar Level Sensor
803 Radar Level Sensor
  • Suitable for Medium: Liquid, especially with pressure and Volatile Liquid
  • Explosion-proof Grade: Exia IIC T6 Ga/ Exd IIC T6 Gb
  • Measuring range: 35m                       
  • Aerials: The Horn Antenna
  • Frequency: 6 GHz                   
  • Temperature: -40℃~130℃(Standard type)
  • -40℃~250℃(High temperature type)
  • Measurement Precision: ± 10mm    
  • Process Pressure: (-0.1 ~ 4) MPa
  • The Signal Output: (4 ~ 20) mA/HART         
  • The Scene Display: Four LCD /Can be programmed
  • Power Source: Two-wire (DC24V)
  • Four-wire(DC24V/AC220V)
  • Repeatability: ± 1mm
  • Outer Covering: Aluminum / Plastic / Stainless steel
  • Connection: Flange (optional) / Thread
804 Radar Level Sensor
  • Suitable for Medium: Solid particles or block material,
  • And it is not suitable for solid powder
  • Explosion-proof Grade: Exia IIC T6 Ga/ Exd IIC T6 Gb
  • Measuring Range: 35m
  • Aerials: The Horn Antenna
  • Frequency: 6 GHz
  • Temperature: -40℃~130℃(Standard type)
  • -40℃~250℃(High temperature type)
  • Measurement Precision: ± 20mm   
  • Process Pressure: (-0.1 ~ 0.3) MPa
  • The Signal Output: (4 ~ 20) mA/HART
  • The Scene Display: Four LCD /Can be programmed
  • Power Source: Two-wire (DC24V)
  • Four-wire(DC24V/AC220V)
  • Repeatability: ± 1mm
  • Outer Covering: Aluminum / Plastic / Stainless steel
  • Connection: Universal joint flange
  • 805 Radar Level Sensor
805 Radar Level Sensor
  • Suitable for Medium: Liquid, especially suitable for low dielectric constant, sticky, with mixing the liquid
  • Explosion-proof Grade: Exia IIC T6 Ga/ Exd IIC T6 G
  • Measuring Range: 20m
  • Aerials: The Horn Antenna
  • Frequency: 6GHz 
  • Temperature:  -40℃~130℃(Standard type)
  • -40℃~250℃(High temperature type)
  • Measurement Precision: ± 10mm    
  • Process Pressure: (-0.1 ~ 4) MPa
  • The Signal Output: (4 ~ 20) mA/HART        
  • The Scene Display: Four LCD /Can be programmed
  • Power Source: Two-wire (DC24V)
  • Four-wire(DC24V/AC220V)
  • Repeatability: ± 1mm                              
  • Outer Covering: Aluminum / Plastic / Stainless steel       
  • Connection: Flange
  • 806 Radar Level Sensor
806 Radar Level Sensor
  • Suitable for Medium: Solid, especially suitable for high-temperature conditions
  • Explosion-proof Grade: Exia IIC T6 Ga/ Exd IIC T6 G
  • Measuring Range: 15m
  • Aerials: The Horn Antenna
  • Frequency: 6GHz 
  • Temperature:  (-40 ~ 400) ℃
  • Measurement Precision: ± 20mm    
  • Process Pressure: (-0.1 ~ 0.3) MPa
  • The Signal Output: (4 ~ 20) mA/HART        
  • The Scene Display: Four LCD /Can be programmed
  • Power Source: Two-wire (DC24V)
  • Four-wire(DC24V/AC220V)
  • Repeatability: ± 1mm                              
  • Outer Covering: Aluminum / Plastic / Stainless steel       
  • Connection: Flange

3. Installation Guide of SI-80 Radar Level Sensors

3.1 SI-80 Radar Level Sensors Installation instructions:

Installation Guide of SI-80 Radar Level Sensors

The recommended position (2), the outer wall of the tank wall to install pipe shall meet the following,

from the tank wall best distance to tank diameter of 1/4 or 1/6,

the minimum distance from the installation of the tank wall as the measurement range of 1/10.

For example, the liquid level of storage tank 10m,

and the tank wall installs the minimum distance of 1m.

  • Cannot be installed above the feeding port (4).
  • Cannot be installed in the central position (3), if installed in the central, yield multiple false echoes, clutter echo will lead to real signal loss.
  • If you can’t keep the instrument and the tank wall of the tank wall distance, the medium will adhesion caused by false echo, when debugging instrument should be false echo storage.

Installation Guide of SI-80 Radar Level Sensors

The top conical tank level, can be installed at the top of the tank is intermediate, can guarantee the measurement to the conical bottom.

Installation Guide of SI-80 Radar Level Sensors

A feed antenna to the vertical alignment surface. 

If the surface is rough, the stack angle must be used to adjust the angle of Universal joint flange of the antenna to the alignment surface.

 (Due to the solid surface tilt will cause the echo attenuation, even Loss of signal.)

3.2 Tank installation instructions FOR
SI-80 Radar Level Sensors

Tank installation instructions
  • In the signal beam, should avoid the following installation: Such as (1) the limit switch, temperature sensor.
  • Symmetric devices such as (2): vacuum ring, a heating coil, Baffle plate, etc.
  • If the tank (1) (2) interference object, should be
  • guided wave tube measurement.

Best installation options:

  • Antenna size: larger antenna, beam angle smaller, interfering echoes will be weaker.
  • Antenna adjustment: the antenna to adjust to the best measurement position.
  • Guided wave radar takes over: The installation of the waveguide is used to avoid disturbing the echo.

Tank installation ( 801, 802 )

A standard installation

Tank installation ( 801, 802 )
  • The radar antenna cannot tilt to the tank wall.
  • In order to minimize temperature effect, at the junction of the butt joint flange must use the spring washer.
  • The rod antenna launching point must reach out to install the pipe.
  • The vertical placement of the rod antenna beam direction, don’t let the tank wall.

Tank installation ( 803 )

Tank installation ( 803 )

A standard installation

  • Horn antenna must be installed pipe
  • extends out, otherwise, should use the
  • antenna extension tube.
  • Horn antenna must be adjusted to the Vertical, don’t let the radar beam pointed to the tank wall.

Install short long antenna extension tube

Install short long antenna extension tube
  • When the horn length is less than the installation of tube length, tube using an antenna.
  • If the diameter of the horn tube diameter
  • greater than the installation, you will need
  • to increase meter elevation, extension tube.
  • The antenna and the extension tube needs to to be installed from inside the container.
  • Select the extension tube makes the instrument at least elevation 100mm.

3.3 SI-80 Radar Level Sensors Measurement of Wave Guide Tube

If there is an obstacle, such as a ladder, limit switches, heating equipment,

such as a stent within the range of the microwave beam emitted radiation will lead to measurement errors.

If affected, the need to add another waveguide measured.

Measurement of Wave Guide Tube

Then measure the waveguide tube (or Bypass pipe) installed inside the container to avoid obstacles,

foam, liquid surface fluctuations and large impact on the measurement.

Note: 

Isobaric pore diameter 5 ~ 10mm.

Waveguide diameter of at least 50mm and the inner walls must be smooth.

Measuring only good mobility media, viscous media cannot be measured with a waveguide.

3.4 The bypass pipe installation FOR
SI-80 Radar Level Sensors

Installation of the bypass pipe

If the sensor is installed in the bypass pipe, need to install the communication the part is higher than that of the by-pass pipe and the upper part of the container ≥ 500mm;

Bypass pipe at the bottom to be lower than the connecting part of the by-pass pipe and the bottom of the container  ≥300mm.

Radar installation site display unit and connected component parallel.

Schematic diagram of the bottom refraction board

If the dielectric constant of the medium-small (< 4), part of the radar signal can penetrate the dielectric constant constant dielectric.

Echo signal when the tank bottom reflection signals when compared to the dielectric reflection of strong, at this time,

measurement error. In this case, can be at the bottom of the tank to install the refraction board will signal refraction.

3.5 Typical installation errors OF
SI-80 Radar Level Sensors

3.5.1 The conical tank cannot be installed above the feed port.

Note: outdoor installation should adopt sunshade.

Typical installation errors

① Correct

② Error rainproof measures   

3.5.2 The instrument cannot be installed in the arched or domed roof intermediate.

In addition, producing indirect echo is also affected by the echoes.

Multiple echoes can be larger than the real value of signal echo because through the top can concentrate multiple echoes.

So cannot be installed in a central location.

① Correct

② Error

3.5.3 There are obstacles affecting measurement needed reflection plate.

① Correct

② Error

3.6 Below is a schematic diagram of the echo signal:



Sino-Instrument also offer

Ultrasonic level sensor:

Ultrasonic Level Transmitters

Explosion-Proof, Mapping Software, 3″ (76.2 mm) Measuring Column

Series ULT Ultrasonic Level Transmitter provides reliable, accurate, non-contact measurement of liquid levels.

Radar level transmitter

Radar Level Transmitters, Non-Contact

Level measurement with radar;
radar type level transmitter, also called Radar level gauge.

Non-contacting radar is based on microwave technology,

which detects only surfaces that reflect energy.

Guided wave radar level transmitter

Guided wave radar devices, also called wave guided radar level transmitter,

have no moving parts and require minimum maintenance.

They can measure both the level and the interface between two media.

Pressure level sensors

SI-PCM261 Submersible Pressure Transducer

Submersible pressure transducer with 4-20mA output,

is normal submersible pressure transmitter for level measurement.

Sino-Instrument Hydrostatic submersed level transducers are sensors,

with an electrical transmission output for indication of liquid level.

SI-10 Liquid pressure sensor

The liquid level sensor also called a water pressure sensor, or water pressure transducer.

The SI-10 series pressure sensor provides exceptional levels of stability,

and other performance specifications,

in a wide variety of enclosures from submersible to differential styles.

Sino-Instrument offers over 50 Radar Level Sensors products.

About 50% of these are Submersible level Transmitter measurement, 40% are water meters,

and 40% are liquid level meters.

and ultrasonic level sensor.

New: SI-LT Magnetostrictive level transmitter with Local Digital Display

A wide variety of  Radar Level Sensors options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of 
Radar Level Sensors , located in China.

The top supplying country is China (Mainland), which supply 100% of 
Radar Level Sensors respectively. 

Sino-Instrument sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.

Radar Level Sensors products are most popular in Domestic Market, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Request a Quote

SI-PCM261 Submersible Pressure Transducer

Submersible pressure transducer with 4-20ma is a conventional liquid level measurement sensor. Such as water cans. Cable 0m ~ 300m, minimum range 0.5m.

Submersible pressure transducer with 4-20mA output is Hydrostatic Level Sensor for level measurement. Submersible pressure transducer is based on the measured liquid static pressure proportional to the height of the liquid Principle. Convert static pressure into electrical signal. After temperature compensation and linear correction. Convert into standard electrical signal. Generally 4 ~ 20mA / 1 ~ 5VDC. It can also be called “static pressure liquid level gauge, liquid level transmission Device, liquid level sensor, water level sensor “. Bullet, cage, and flush tip models are available. Applications include pumps, downhole, oil tanks, lime slurry, and water tanks. There is a miniature submersible transmitter that is low power voltage.

Sino-Inst offers a variety of Submersible pressure transducer with 4-20mA for industrial level measurement. If you have any questions, please contact our sales engineers.

Features of SI-PCM261 Submersible Pressure Transducer

SI-PCM261 Submersible Pressure Transducer
  • Linear deviation is less than 0.02%
  • Accuracy over temperature range exceeds ±0.01 ft (3 mm) of water
  • Stainless steel sensor diaphragm, ballast, and casting
  • Polyurethane vented sensor cable is durable and rugged
  • Dry air moisture barrier system provides atmospheric compensation
  • No on-site calibration required

Specifications of Submersible Pressure transmitter

RangeVarious ranges from 0 ~ 0.5m to 0 ~ 300m
Measuring mediumOil, water and other media compatible with 316 stainless steel
Accuracy0.5% FS (standard type); 0.2% FS; 1.0% FS
Pressure overload200%
Protection levelIP65
Power supply24VDC (15 ~ 36VDC)
Output4 ~ 20mA , 1 ~ 5V
Temperature drift-10 ℃ ~ 50 ℃ <0.5% FS; -20 ℃ ~ 85 ℃ <1.0% FS
Insulation resistance> 100MΩ at 500VDC
Anti-electromagnetic / RF interference30V / m, 10KHz to 500MHz
Long-term stability<0.2% FS / year
Compensation temperature0 ℃ ~ 50 ℃
Operating temperature0 ℃ ~ 70 ℃
storage temperature-40 ~ 100 ℃
Shock / vibration resistance100g, 10ms / 10g, 10 ~ 2000Hz
Pressure transmission diaphragm material316 stainless steel
Probe housing material1Cr18Ni9Ti
Cable sheath materialPolyethylene or polyamide
Sealing materialNitrile rubber
Junction box housing materialCast aluminum, surface sprayed
Explosion-proofEx IaII CT6; Ex IaII BT4
Protection levelIP68

You may like: Explosion Proof Pressure Transmitter for Hazardous locations

If you are measuring the fuel tank level, you can choose a magnetostrictive liquid level sensor with higher accuracy and longer service life.

Applications of Submersible Pressure transducer

  • Level measurement in vessel and storage systems
  • Overfilling and no-load operation monitoring
  • Level measurement in rivers and lakes
  • Deep well and groundwater monitoring
  • Battery-operated level measuring systems

Submersible pressure transducers are designed for measuring ground and surface water pressure, temperature and water level. The Sino-Inst submersible pressure transducer can send data up to 1000 feet (304.8 m) long.

The submersible pressure transducer is suitable for a wide range of applications. Urban water supply and drainage. Sewage treatment, water tanks. Oil tank oil tanks, hydrogeology, reservoirs, rivers and oceans and other fields. The compact structure, simple change and flexible installation method provide users with convenience for submersible pressure transducer. 4 ~ 20mA, 0 ~ 5v, 0 ~ 10mA and other standard signal output methods are selected by users according to their needs.

If you need to measure the liquid level of the ground tank, you can refer to the pressure level sensor.

Submersible pressure transducer installation

Precautions for the use and installation of the submersible level sensor:

1. When the liquid level transmitter is transported and stored, it should be restored to the original packaging and stored in a cool, dry and ventilated warehouse.

2. If an abnormality is found during use, turn off the power supply. Stop using it, and check it.

3. Connect the power supply according to the wiring instructions.

How to install the submersible level sensor ?

Total Time:

The ground terminal of the input liquid level gauge should be reliably grounded. The power shield should be connected to it.

When the transmitter is installed on the side, the bending radius of the air guide cable should be greater than 10 cm. Avoid excessive bending to damage the air guide cable.

In the occasions with large vibration. Wire can be wrapped around the transmitter. Use steel wire for shock absorption. So as not to break the cable.

The installation direction of the transmitter is vertical. The input installation position should be far away from the liquid inlet and outlet and agitator.

When measuring the level of flowing or agitated liquid. Usually the steel pipe with inner diameter Φ45mm is fixed in water. Then put the input level gauge into the steel pipe and use it. Make small holes at different heights on the opposite side of the liquid flow direction, so that the water can enter the pipe smoothly.

When the liquid level gauge is installed in a stationary deep well or pool, the steel pipe with an inner diameter of about Φ45mm is usually fixed in the water. Then put the input level gauge into the steel pipe and use it. Make small holes at different heights to allow water to enter the pipe.

When the medium fluctuates greatly and the air guide cable is very long. The probe should be fixed with a sleeve to prevent the probe from swinging and affecting the measurement accuracy.

Sludge, oil residue and other substances are easily deposited in the tank bottom or bilge. It is recommended to move the measuring probe at a certain height away from the bottom of the tank (cabin). In order to avoid debris blocking the probe.

If there is any problem with the submersible pressure transducer during use. You can call the Sino-Inst staff to get a timely solution.

If you need a portable instrument, we also provide Portable Ultrasonic Water Depth Gauge for water depth measurement.

What is a submersible pressure transducer?

Submersible pressure transducer is a hydrostatic pressure sensor. Because it can be put into water, the liquid level can be calculated by measuring the underwater static pressure, so it is also called throw-in water level transmitter / level transmitter /submersible water level sensor / level gauge. Submersible pressure transducer is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. Use advanced isolated diffused silicon sensitive element or ceramic capacitor pressure sensitive sensor. Convert static pressure into electrical signal. After temperature compensation and linear correction. Converted into standard electrical signals (such as 4 ~ 20mA, etc.). Equipped with 2088 indicator head can also realize real-time display of on-site water level.

Read more about: Differences! Static pressure vs dynamic pressure vs total pressure

Precise level and temperature measurement with HART®communication

Measurement uncertainty of max. 0.5 %, long-term drift of 0.1 %.

And slight temperature errors make the SI-PCM261 a reliable measurement solution, for the monitoring of storage tanks and bodies of water.

The additional analog temperature output facilitates the compensation of a temperature-induced density error especially at temperatures of up to -40 … +80 °C [-40 … +176 °F].

The integrated HART® communication can be used for scaling the measuring range, and for the parameter isolation of unit, error signal, and others.

You may like the AMS TREX

Why we use the 4 20mA in transmitting signal?

Why is it 4/20 mA?

The reason for using a current signal is that it is less susceptible to interference. And the internal resistance of the current source is infinite. The wire resistance is connected in series in the loop without affecting the accuracy. And it can be transmitted over ordinary twisted pairs for hundreds of meters.

Due to explosion protection requirements, the upper limit is 20 mA: the spark energy caused by a current interruption of 20 mA is not sufficient to ignite the gas.

The reason why the lower limit is not set to 0mA is to detect a disconnection. During normal operation, the value will not be lower than 4mA. And when the transmission line is disconnected due to a fault, the loop current will drop to 0.

Usually, 20mA is used as the disconnection alarm value. There are two more reasons.
One reason is to avoid interference.
Another reason is that the two-wire system uses 4-20 mA of current. That is, the two wires are the signal line and the power line. The 4 mA is used to provide the quiescent operating current of the circuit for the sensor.

Extended reading: How to convert a 4-20mA to 0-10V /1-5V signal?

Optimized electronics for battery operation

The modern electronic system guarantees not only a high accuracy in the long term. But also ensures a very long battery life thanks to the low power supply, low current consumption, fast response time and low-power output signals.

Safety also in hazardous areas

The optional intrinsically safe electronic system is authorized, according to the common international standards. And allows a safe worldwide application in explosive gases and vapours.

If you want buy Wika ls-10 submersible pressure sensor, you can contact us. Sino-Inst also agent for WIKA in China. If you want find the pressure sensor for liquid level measurement, to replace the WIKA, our submersible hydrostatic level transmitter, is your best choice.

FAQ

What is a pressure transducers?

The mechanical structure of Submersible pressure transducer is highly resistant to overload and corrosive media. Submersible pressure transducer has excellent sealing and anti-corrosion properties. It can be directly put into liquids (including corrosive liquids) such as water and oil for medium to long-term use. The shell and cable of PTFE material can measure a variety of highly corrosive liquids.

Do you have lighting protection?

Yes. We have. Lightning protection type Submersible pressure transducer is an outdoor type liquid level transmitter used in industrial fields that is free from frequent high-voltage overvoltage during lightning strikes and limits freewheel time and freewheeling value. The product is based on the principle that the measured static pressure of the liquid is linearly proportional to the height of the liquid level. The temperature drift is small and the accuracy is high. Imported diffused silicon sensor with long-term stability and embedded special anti-surge circuit technology. Thereby, the linear relationship between the output signal and the liquid depth is converted into a standard signal output, and accurate measurement of the liquid depth is realized. It can be widely used in water plants and sewage treatment plants with frequent lightning and surge currents.

What is the max depth?

For ordinary liquid level measurement, the range of 0m ~ 300m can already meet the needs of users. For deep well water level measurement, we can use our Deep Well Water Level Sensor, up to 1000 meters. Also supports customer customization.

Sino-Inst offers over 50 Submersible Pressure Transducer products.

About 50% of these are Submersible Pressure Transducer, 40% are Differential Pressure Gauge, and 40% are Diaphragm Seal Pressure transmitters.
A wide variety of  Submersible Pressure Transducer options are available to you, such as free samples, paid samples. 

Sino-Inst is a globally recognized supplier and manufacturer of 
Submersible Pressure Transducer, located in China. Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Submersible Pressure Transducer products are most popular in Domestic Market, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Request a Quote

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