Monthly Archives: August 2020

SIRD-802 Radar Level Meter for Corrosive Liquids

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SIRD-802 Radar Level Meter for Corrosive Liquids

A radar level meter is often used for non-contact continuous level measurement. SIRD-802 Radar Level Sensor is equipped with a rod antenna (PTFE). It is especially suitable for level measurement of corrosive liquids and has special advantages in small containers. encountered in chemical plants. Petroleum storage tanks, chemical storage tanks, chemical storage tanks.

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Features of SIRD-802 Radar Level Sensor for Corrosive Liquids

  • Short emission wavelength
  • Strong concentrated penetration ability
  • Integrate advanced Ech-Capture signal processing technology
  • Easy penetration, foam, dust
  • False echo processing technology
  • The transmission of microwave signals is not affected by the atmosphere, so it can meet the harsh environment requirements of volatile gases, high temperature, high pressure, steam, vacuum and high dust in the process.
  • This product is suitable for harsh environments such as high temperature, high pressure, vacuum, steam, high dust and volatile gas, and can continuously measure different material levels.

Specifications of SIRD-802 Radar Level Sensor for Corrosive Liquids

Applicable medium:liquid, especially suitable for strong corrosive liquid
Application:Pressure level measurement;
Sewage level measurement;
Volatile acid-base level measurement
Explosion-proof certification:Exia IIC T6 Ga/Exd IIC T6 Gb
Measuring range:20m
Antenna:Rod antenna (PTFE)
Frequency:6 GHz
Process temperature:-40～130℃(standard type)/-40～180℃(high temperature type)
Measurement accuracy:±10mm
Process pressure:(-0.1～1.6)MPa
Signal output:(4～20)mA/HART
On-site display:four LCD programmable
Power supply:Two-wire system (DC24V)
Four-wire system (DC24V/AC220V)
Repeatability:± 1mm
Housing:Aluminum single cavity/aluminum double cavity/plastic/stainless steel single cavity
Process connection:Flange

Extended Reading: GWR Level Sensor for High Temperature & High Pressure

SIRD-802 Radar Level Sensor for Corrosive Liquids Applications

6GHz radar level sensor is suitable for liquid, paste, granule and block material level and non-contact measurement. Suitable for changes in temperature, pressure. 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.

  • Power plants: coal piles, raw coal bins, fuel bins, reservoirs, waste gas purification tanks, bin pumps, ash storage, etc.
  • Oilfield: crude oil or product oil storage tanks, three-phase separators, sedimentation tanks, sewage tanks (pools), drilling mud tanks, etc.
  • Petrochemical: distillation tower, concentration tank, liquefied gas tank, ammonia tank, steam drum, oil refinery oil depot, asphalt tank, etc.
  • Chemical industry: distillation tower, raw material and intermediate silo, reaction tank, ammonia tank, toxic liquid tank, solid silo, separator, etc.
  • Metallurgy: ore silo, ore crusher, raw material silo, auxiliary silo, blast furnace, alumina powder silo, electrolytic cell buffer tank, etc.
  • Cement: stone silos, raw meal silos, cement silos, coal powder silos, slag storage silos, etc.
  • Water and water treatment: reservoirs, sewage tanks, water treatment tanks, sedimentation tanks, digestion towers, etc.
  • Papermaking: raw material warehouse, storage tower, drying drum, etc.
  • Others: food, pharmaceuticals, environmental protection, shipbuilding, etc.

You may like: Wastewater flow measurement

Extended reading: Radar Liquid Level Sensor|Corrosive, steam, volatile liquids

Radar Level Gauge Quick Installation Guide

Tank installation

A standard installation

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

Installation instructions

  • The recommended position (2), the outer wall of 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 tank wall as the measurement range of 1/10.
  • For example: liquid level of storage tank 10m, and the tank wall install 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 echo, 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.
  • The top conical tank level, can be installed at the top of the tank is intermediate, can guarantee the measurement to the conical bottom. 

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.

How do you calibrate the radar level transmitter?

Set up the guided wave radar level transmitter

HART communicator, power supply, and the multimeter are as below (see below calibration setup Diagram).

Check the configuration of the lower range value (0% level, 4 mA) and high range value (100% level, 20 mA).
Make sure that the inputted data is as per the datasheet.
For example, the lower range value is 10 inch and the high range value is 35 inches (both of it are measured from the bottom of the level transmitter probe)

Fill the level transmitter chamber with water up to the 0% level.
Read the level measurement in the transmitter LCD (or in the HART communicator). Set this condition as 0% level through the HART communicator.

Read the mA output of the transmitter by using a multimeter.
Adjust (if any) through the HART communicator so that the output of the transmitter (on the multimeter) is 4 mA.

Fill the level transmitter chamber with water up to 100% level.
Read the level measurement in the transmitter LCD (or in the HART communicator). Set this condition as 100% level through the HART communicator.

Read the mA output of the transmitter by using a multimeter.
Adjust (if any) through the HART communicator so that the output of the transmitter (on the multimeter) is 20 mA.

Extended reading: Radar Non Contact Water Level Sensor

Very short microwave pulses with very low energy are transmitted and received through the antenna system. The radar wave runs at the speed of light. The operating time can be converted into level signals by electronic components. A special time extension method can ensure stable and accurate measurement in a very short time.

Electromagnetic waves propagate in the air at the speed of light. The distance between the radar level gauge and the surface of the material can be expressed by the following formula: 　　

D = (1/2)*CT

In the formula:

D ———the distance between the radar level gauge and the surface of the material; 　　

C ———Speed of light 　　

T ———Pulse time.

Then the liquid level is: 　　L = E-D

In the formula:

L — liquid level; 　　

E ———The total height of the tank; 　　

D ———Air height.

Even in the presence of false reflections, the new micro-processing technology, and the unique ECHOFOX- software can accurately analyze the level echo. By inputting the size of the container, the distance value can be converted into a signal proportional to the level. The instrument can be debugged with empty positions.

Extended reading: Drop Antenna Radar Tank Level Sensor

26g Radar Level Meter

SIRD-901 Radar Corrosive Liquid Chemical Level Sensor
SIRD-902 Drop Antenna Radar Tank Level Sensor
SIRD-902T Microwave Radar Liquid Level Sensor

SIRD-903 26 GHz Radar level Sensor -Dust solid level measurement
SIRD-904 Radar Level Gauge with Parabolic Antenna
SIRD-905 Horn Antenna Radar Tank Level Sensor
SIRD-906 Radar Sanitary Level Sensor
SIRD-908 Radar Water Level Sensor
SIRD-909 Radar Non-Contact Water Level Sensor

The radar level gauge uses a transmission frequency of up to 26G, which has the following advantages over 6G radar:

  1. The high-frequency radar level meter (mainly 26GHz) has high energy and small beam angle. Generally, the beam angle of a Φ95mm horn antenna is 8º. When the horn antenna diameter of a 6GHz low-frequency pulse radar is Φ246mm, the beam angle is only 15º. The advantages of small antenna size and high precision.
  2. The wavelength of the 26GHz radar is 11mm, and the wavelength of the 6GHz radar is 50mm. When the radar measures the bulk material level, the radar wave reflection mainly comes from the diffuse reflection of the material surface. The intensity of the diffuse reflection is directly proportional to the size of the material. It is inversely proportional to the wavelength. Most bulk materials The straight length of the material is far less than 50mm. 26GHz radar is the best choice for bulk material level measurement.
  3. In the application of some small tanks with small diameter and short height. When the medium in the tank or the strong corrosive medium has volatile gas, the effect of ultrasonic measurement is poor. The radar effect is good. The 6GHz radar antenna length (300-400mm) is invisible Increase the blind area (about 600mm). Due to the poor directivity of the 6GHz radar (large opening angle), multipath reflections will occur in a small tank. The 26GHz radar frequency is high and the antenna is short. The directivity is good. It overcomes the shortcomings of the 6GHz radar. Suitable for small tank measurement.
  4. Due to the harsh site environment, dirt and water vapor will accumulate on the radar antenna over time. The 26GHz radar antenna is small. Adding a radome can greatly improve the impact of dirt and water vapor. The 6GHz radar frequency is low. The antenna size is large. An antenna is added. The cover is very difficult. The overall instrument is large and it is difficult to clean up.
  5. Due to the good directivity of the 26GHz radar. Many harsh working conditions can be measured by simply isolating the radar outside the container.
  6. Adopting advanced microprocessor and unique EchoDiscovery echo processing technology. Radar level gauge can be applied to various complicated working conditions.
  7. Adopting pulse working mode, the transmitting power of the radar level meter is extremely low. It is installed in various metal and non-metal containers. It is not harmful to the human body and the environment.

Extended reading: Radar Oil Tank Level Sensor

Featured Level Measurement Devices for Corrosive Liquids

Extended reading: FMCW Radar Level Transmitter 120GHz

Sino-Inst offers over 10 Radar Level Sensor for Corrosive Liquids level measurement. About 50% of these are Radar level meters, 40% is the tank level sensor.

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

Sino-Inst is a globally recognized supplier and manufacturer of radar level measurement instrumentation, located in China.

SIRD-801 Radar Level Sensor-Suitable for Liquid, Slightly Corrosive Liquid

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Radar level sensor is the perfect choice for non-contact liquid level measurement. Suitable for sewage level measurement; low volatile acid and alkali level measurement; slurry level measurement.

Radar level sensor antenna emits and narrow microwave pulse. This pulse propagates in space at the speed of light. When it encounters the surface of the measured medium, part of its energy is reflected back and received by the same antenna. The time interval between the transmitted pulse and the received pulse is proportional to the distance from the antenna to the surface of the measured medium. The 6GHz intelligent series radar level gauge is suitable for non-contact continuous measurement of the level of liquid, slurry, granular material and block material. Applicable In the occasions where temperature and pressure change greatly, inert gas and volatilization exist.

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

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More Level Sensors

Features of SIRD-801 Radar Level Sensor

  • The hardware system uses advanced microprocessors and embedded system processing software. The signal algorithm processing integrates advanced Echo-capture signal processing technology. This makes the product applicable to various complex industrial plant conditions.
  • The “empty tank pretreatment” technology enables the instrument to correctly identify effective echoes and obtain correct measurement results even in the presence of multiple false echo interference.
  • Not affected by various complicated working conditions. Such as strong surface fluctuations, foam, moisture and dust interference.

Specifications of SIRD-801 Radar Level Sensor

Applicable medium:liquid, slightly corrosive liquid
Application:Sewage level measurement;
Low volatile acid-base level measurement;
Slurry level measurement
Explosion-proof certification:Exia IIC T6 Ga/ Exd IIC T6 Gb
Measuring range:20m
Antenna:Rod antenna (PP/PTFE)
Frequency:6 GHz
Process temperature:(-40～130)℃
Measurement accuracy:±10mm
Process pressure:(-0.1～0.3)MPa
Signal output:(4～20)mA/HART
On-site display:four LCD programmable
Power supply:two-wire system (DC24V)
four-wire system (DC24V/AC220V)
Repeatability:± 1mm
Housing:aluminum single cavity/aluminum double cavity/plastic/stainless steel single cavity
Process connection:flange (optional)/thread

Radar Level Sensor’s Applications

  • Power plants: coal piles, raw coal bins, fuel bins, reservoirs, waste gas purification tanks, bin pumps, ash storage, etc.
  • Oilfield: crude oil or product oil storage tanks, three-phase separators, sedimentation tanks, sewage tanks (pools), drilling mud tanks, etc.
  • Petrochemical: distillation tower, concentration tank, liquefied gas tank, ammonia tank, steam drum, oil refinery tank, asphalt tank, etc.
  • Chemical industry: distillation tower, raw material and intermediate silo, reaction tank, ammonia tank, toxic liquid tank, solid silo, separator, etc.
  • Metallurgy: ore silo, ore crusher, raw material silo, auxiliary silo, blast furnace, alumina powder silo, electrolytic cell buffer tank, etc.
  • Cement: stone silos, raw meal silos, cement silos, coal powder silos, slag storage silos, etc.
  • Water and water treatment: reservoirs, sewage tanks, water treatment tanks, sedimentation tanks, digestion towers, etc.
  • Papermaking: raw material warehouse, storage tower, drying drum, etc.
  • Others: food, pharmaceuticals, environmental protection, shipbuilding, etc.

Extended reading: Radar Level Meter for Corrosive Liquids

Radar Level Sensor Working Principle

A low-frequency radar level meter is a 6GHz radar level measurement product. It uses an advanced microprocessor. The low-frequency radar has a long emission wavelength, and when encountering obstacles, it can cause diffraction to bypass the obstacles. Then, through optimized echo processing technology, false echo processing technology, and software digital processing technology, the true level is calculated.

The antenna types and process connections are diverse, which can be applied to various working conditions and application schemes. There are more unique application schemes for temperature, pressure and small dielectric constant. At the same time, it integrates HART communication technology and a modular digital display module. When the product is in application, the debugging scheme is diverse and the debugging is simple.

Antenna system to launch and microwave receiving energy is 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.

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 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 measure the environment. 4 – 20mA with the corresponding output.

Extended reading: Radar Liquid Level Sensor|Corrosive, steam, volatile liquids

Radar Level Sensor Advantages and Disadvantages

Let’s analyze its advantages first: 　

  1. The radar level gauge adopts an integrated design. It is mainly composed of electronic components and antennas. No moving parts. There is no mechanical wear. There are very few failures in use and long service life.　　
  2. The electromagnetic wave emitted by the radar level gauge can pass through the vacuum without a transmission medium. It is not affected by the atmosphere, steam, and volatilized fog in the tank.　　
  3. The radar level gauge can be used for almost all liquid level measurement.　　
  4. Adopt non-contact measurement. It is not affected by the density and concentration of the liquid in the tank.　　
  5. Large measuring range. The maximum measuring range can reach 0～35m. It can be used for high temperature and high pressure liquid level measurement.　　
  6. Key components such as antennas are made of high-quality materials. It has strong corrosion resistance and can adapt to very corrosive environments.　　
  7. Rich functions, with false wave learning function. Enter the actual liquid level of the liquid surface, and the software can automatically identify the false echoes from the liquid surface to the antenna and eliminate the interference of these waves.　　
  8. The parameter setting is convenient, and it can be set with the simple operation keys on the level gauge. It can also be modified with a handheld communicator.

The main disadvantages are as follows:

  1. Determine the height of the measured storage medium tank during calibration. And after empty calibration, the output of zero and full scale is set to 4mA for empty tank zero point and 20mA for full tank (maximum range).
  2. Some volatile organic matter in the measuring medium will crystallize on the horn or antenna of the radar level gauge. They need to be inspected and cleaned regularly.　　
  3. Interference wave influence. In daily maintenance, you can use a PC (with VEGA Visual Operating software) to remotely observe the reflected wave curve. For possible interference waves, the level gauge can be used to identify false waves. Remove the influence of these interference reflection waves to ensure accurate measurement.

Extended reading: Drop Antenna Radar Tank Level Sensor

According to the measurement method of radar level transmitter, there are two common ones:

  • Pulse type. The transmitted radar wave pulse of the antenna period;
  • FM continuous wave type. The antenna emits a radar wave signal that changes continuously around a fixed frequency.

Pulse radar level transmitter can also be called pulse radar level transmitter. It adopts pulse working mode. It also cooperates with a variety of output circuit interfaces and acquisition systems.

Pulse radar level transmitter has the advantages of wide application range, strong reliability, convenient maintenance, simple operation, and can measure almost all media.

Pulse radar level transmitters are generally used in spherical tanks, cylindrical tanks, cylindrical conical tanks and other containers. It can measure various liquids such as tap water, hydrochloric acid, industrial wastewater, cement slurry, etc. The above is the introduction of Pulse radar level transmitter and its advantages.

Advantages

  • Long life span, stable and reliable operation, easy installation, almost no maintenance
  • None influence of measured medium in physical and chemical state. Eg: medium electrical conductivity, dielectric constants, foam, pressure, temperature, evaporation, boiling, bubbling effect etc, .
  • Choose appropriate material can be used in a variety of bad media environment with densities ≥ 0.5G/CC ;
  • Interface measurement with two media of different density control;
  • Wide range of application. Pressures from vacuum to PN160 (special up to PN320), temperature -40~+150 ° c
  • Design, explosion-proof, suitable for explosive environments;
  • Controller can be used to control the upper and lower liquid level.

Disadvantages

  • Low accuracy.
  • The installation position is limited by the shape of the container.
  • Most float level gauges are not suitable for corrosive or hazardous liquid media.

More Featured Float 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
SI-U05 Cable Float Level Sensor & Swtich

Featured Radar Water Level Sensors

High frequency and low frequency Radar Level Sensor

The microwave frequency used by the microwave level meter has three frequency bands: C band (5.8～6.3GHz), X band (9～10.5GHz), K band (24～26GHz).

The microwave in level measurement is generally directional emission. The beam angle is usually used to quantitatively express the directivity of microwave transmission and reception. The beam angle is related to the antenna type and also to the microwave frequency (wavelength) used.

For the antenna of the same size, a level gauge with a wavelength of 1.2cm and a frequency of 26 GHZ has 6 times higher gain than a level gauge with a wavelength of 3cm and a frequency of 10 GHZ. The antenna gain is a parameter indicating the concentration of radiation from a directional antenna.

The receiving signal diagrams of different frequencies (26/10/6 GHZ), the same antenna, dielectric constant and distance increase are as follows:

Extended reading: Radar Non Contact Water Level Sensor

The total beam width of the radar level gauge is inversely proportional to the frequency of the device. Therefore, for an antenna of the same diameter, if the frequency of the radar level gauge is increased, the beam width will be lower than that of a lower frequency device. The narrow beam minimizes the influence of the nozzle, tank wall and interference.

At the same time, the measurement range of the radar level gauge is also affected by factors such as frequency, antenna size, dielectric constant of the liquid, and process conditions.

The application difference between high frequency and low frequency of radar level sensor.

Low-frequency radar level gauges are preferred when measuring steam, foam, and condensate. In most other applications, high-frequency radar level gauges are preferred for ease of installation.

  1. The lower frequency reduces the sensitivity to steam, foam and antenna contamination. The low-frequency radar has a wider wave speed angle. It can better deal with the problems of steam, dust, condensation, pollution and turbulent surfaces.
  2. The higher frequency minimizes the impact on the nozzle, tank wall and interference.

Of course, in addition to radar level sensors, ultrasonic level sensors are also a good choice for non-contact level measurement.

Frequently
Asked
Questions

Help Center

Most liquid level sensors can measure the water level.
But from the comprehensive analysis of cost and use, the Hydrostatic Level sensor is the choice of most customers.
More about Hydrostatic level measurement.

In actual application, there are two methods for radar level sensors, namely, frequency modulated continuous wave type and pulse wave type. The liquid level sensor using FM continuous wave technology has high power consumption, must adopt a four-wire system, and the electronic circuit is complicated.

The liquid level sensor using radar pulse wave technology has low power consumption and can be powered by two-wire 24VDC, which is easy to achieve intrinsic safety and has a wider application range.

Ultrasonic sensors use sound waves, and radar uses electromagnetic waves. This is the biggest difference.

Moreover, the penetrating ability and directivity of ultrasonic waves are much stronger than electromagnetic waves, which is why ultrasonic detection is more popular now.
The difference between the main applications:
　　 1. Ultrasonic accuracy is not as good as radar.
　　 2. The relative price of radar is relatively high.
　 3. When using radar, consider the dielectric constant of the medium.
　　 4. Ultrasound cannot be applied to working conditions such as vacuum, high steam content or foam on the liquid surface.
　　 5. The radar measurement range is much larger than that of ultrasonic.
　　 6. The radar has a horn type, a rod type, and a cable type. Compared with ultrasonic, it can be applied to more complicated conditions.

Types of Level Transmitters:
Level measurement transmitters are of seven types. Each type of transmitter works in a different way, and makes it useful for different types of processes.

Capacitance Level Transmitters
Hydrostatic Level Transmitters
Magnetic Level Transmitters
Radar Fill Level Transmitters
MUltrasonic Level Transmitter
Guided Microwave Level Transmitters
Hydrostatic level transmitters
Extended reading: FMCW Radar Level Transmitter 120GHz

The radar level gauge adopts the transmitting-reflecting-receiving working mode. The antenna of the radar level gauge emits electromagnetic waves. These waves are reflected by the surface of the measured object and then received by the antenna.

The time from emission to reception of the electromagnetic wave is proportional to the distance to the liquid surface. The radar level gauge records the pulse wave experience Time.

And the transmission speed of the electromagnetic wave is constant. The distance from the liquid surface to the radar antenna can be calculated to know the liquid level of the liquid surface.

The radar level sensor can emit radar wave signals through its own antenna. It runs in space at the speed of light. When it hits the surface of the material, it is reflected back to the radar antenna. The microprocessor converts the distance signal into a liquid level signal to achieve liquid level measurement.

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Sino-Inst offers over 10 Radar Level Sensors for level measurement. At best price. About 50% of these are Radar level meters, 40% is the tank level sensor.

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

Sino-Inst is a globally recognized supplier and manufacturer of Radar Level measurement instrumentation, located in China.

HS-SFCC Portable Ultrasonic Water Depth Gauge

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Water Depth Gauge is a portable water depth detector based on the principle of ultrasound. Ideal water depth measuring instrument for ships, oceans, reservoirs, lakes, rivers, and shallow water level monitoring.

Water Depth Gauge is a necessary instrument to measure water depth in reservoir, lake, river, shallow sear. Place ultrasonic transducer on water surface or into a certain position into water. The device can caculate current water depth. HS-SFCC Portable Ultrasonic Water Depth Gauge It has perfect water depth measurement function. Control function, data transmission function and man-machine communication function. This machine integrates ultrasonic transceiver sensor, servo circuit, temperature compensation sensor and compensation circuit unit, display, control signal output and serial data or analog output unit (optional) as a water depth measuring instrument. It has the characteristics of low maintenance, high reliability, long life, convenient use, simple operation and accurate measurement. Therefore, it is widely used in water area monitoring.

Features of HS-SFCC Portable Ultrasonic Water Depth Gauge

  • Less maitenance,
  • Long lifespan,
  • Simple operation,
  • Correct measurement result, high reliability and precision;
  • Widely used in hydrographic surveying, hydropower plant, reservoir, shallow sea, lake, river surveying, water environment monitoring, etc.

Read more about: The Difference Between Ultrasonic Depth Sensor And Ultrasonic Level Sensor

Specifications of HS-SFCC Portable Ultrasonic Water Depth Gauge

Basic parameters

Maximum range50/100/200/300m/500m (customizable)
Detection accuracy± 0.5% (in 20 °C water)
Detection blind area≤500mm, 800mm, 1200mm(vary according to different measuring range)
Draft depth≥ 500mm
Output single4 ~ 20mA, RS485 (two types of signal output at the same time as default)
ChargerInput voltage: 110 ~ 240VAC 50/60Hz
Output voltage: 12.6VDC 350mA

Meter parameters

DisplayLCD multi-information + backlight display, four-digit depth
Display resolutionFS<10m,d = 1mm FS≥10m, d=1cm 
Keyboardlight touching key
Operating temperature0 °C ~ 50 °C
Storage temperature– 20 °C ~ 70 °C
Working humidity≤ 80% RH non-condensing 
Storage humidity≤ 70% RH non-condensing 
Dimensions235 × 115 × 70mm
Operating voltagepowered by internal 12 V rechargeable lithium battery (standby time: 6 hours)

Sensor parameters

Applicable mediumfresh water and sea water
Operating temperature0 °C ~ 40 °C
Working frequency50kHz ~ 200kHz (vary according to different sensor)
Wave beam angle18 ° ± 2 °
Sensor cable length10m
Protection levelIP68

All parts are welled packed in aluminum alloy portable protective case with sponge inside. 

Packing weight4.5kg (including case)
Packing size37 × 25 × 37Cm

Extended reading: Typical Applications of Handheld Ultrasonic Flow Meter

Water Depth Gauge for Boat

1.The HS-SFCC Portable Ultrasonic Water Depth Gauge is handheld and portable. There are also hooks on the back to fix it. When in use, screw the sensor connecting rod to the sensor. Then securely connect the connecting rod. The protection requirements of cables should be considered during installation.

It is recommended to pass the cable through the connecting rod of the configuration first. Then screw the connecting rod onto the sensor head. The sensor thread size is 1 inch. In order to avoid the cable being stressed, the cable will be broken and the sensor will be permanently damaged.

2. Ultrasonic water depth sensor can only work in water, not in air. The meter will display “nor”. In order to prevent the influence of water surface waves on the test, it is recommended that the sensor is immersed no less than 0.5m below the water surface.

3. When working in sea water, you need to enter the N value or salinity value in the P1 menu.

4. The ultrasonic sensor and the meter circuit are matched and cannot be interchanged. And the sensor cable cannot be lengthened or shortened by itself.

5.The transmit power cannot be set too large or too small, otherwise it will not work normally.

6. The ultrasonic bathymeter has blind spots. The value displayed within the blind zone is a random value.

7. The ultrasonic bathymetry sensor has a corresponding beam angle. When using it, please note that there must be a sufficiently large reflecting surface, and there must be no obstructions around the beam angle range.

8. Because the sensitivity of this instrument is very high. Therefore, there should not be too strong noise or electromagnetic interference near the instrument during use. If the water flow is large, the temperature and humidity are not within the specified range.

Extended reading: Capacitive water level sensor

Featured Level Sensors

Read more about: Common River Water Level Measurement Methods

Sino-Inst offers over 10 Water Depth Gauges for level measurement. About 50% of these are river level meters, 40% is the tank level sensor.

A wide variety of Water Depth Gauges for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Water Depth Gauge instrumentation, located in China.

Liquid Level Controller | HS-ULC-Pro Ultrasonic Non-contact

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Liquid Level Controller monitors the liquid level of tanks and sends out control signals. Upgraded liquid level switch. Upper and lower level alarm. Tank temperature display or monitor whether there is liquid in the pipeline.

Liquid Level Controller is an ideal ultrasonic Non-contact Liquid Level switch. The sensor is attached to the tank body. No need to open holes in the tank. Liquid Level Controller is suitable for liquid level process control in the pharmaceutical, petroleum, chemical, electric power and other industries. For the monitoring of toxic, highly corrosive and dangerous liquids.

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

Request a Quote
Ultrasonic Level Sensing

Features of Ultrasonic Non-contact Liquid Level Controller

  • Advanced signal processing methods. Can overcome the influence of temperature drift.
  • Stronger anti-interference
  • Brand new installation method. Adsorption type + adhesive type. Can improve the stability of the probe.
  • Built-in temperature sensor. Monitor temperature changes for 24 hours. Temperature compensation is also possible.
  • Adopt a new single probe mode. Installation is more convenient. Avoid repeated verification.
  • A new handheld operator can be used to debug the instrument. The probe status can be detected to ensure reliable installation of the probe. It can support on-site upgrade of digital probe software. The historical data of the secondary meter can be read wirelessly.

Specifications of HS-ULC-Pro Liquid Level Controller

ModelHS-ULC-Pro
projectOrdinary explosion-proof type;
Two-point monitoring explosion-proof type;
Intrinsically safe;
Intrinsically safe type with two monitoring points
Precision±2mm
Measurable wall thicknessMax 70mm
output signalLiquid level alarm 485 signal Fault alarm MODBUS 4-20mA
PROFIBUS HART signal FoundationFieldBus
Relay capacityDC 30V 6A/AC 250V 6A
power supplyDC 24V
power2W
Electrical interface specificationsAccording to the actual selection configuration
Threading hole diameterΦ8mm (adaptation cable diameter Φ6～8mm)
Explosion-proof markExd II CT6 Gb;
Ex ia II CT6 Ga
shell materialCast aluminum
Protection levelIP67
Applicable placeExplosive gas environment except coal mine
Applicable ambient temperature of the host-50℃～+60℃
Host applicable environmental humidity15%～100%RH
Working temperature of ultrasonic probeNormal type: -50℃～+80℃ High temperature type: up to 250℃
Host size155*241*129.4mm
Host weight2.6kg
Handheld meter communication distance3 meters
Intrinsic safety parametersUi:28VDC li:93Ma Pi:0.65W Ci:44Nf Li:11uH

Wikipedia does not give a professional definition of liquid level controller.
We define the liquid level controller as follows:
Liquid level controller refers to the control of high and low liquid levels through mechanical or electronic methods. It Can control solenoid valves, water pumps, etc. So as to achieve semi-automation or full automation. There are many methods, depending on the choice of different products.

Liquid Level Controller can also be used with paperless recorder.

Liquid Level Controller Working Principle

The sensor of the High-Pro type liquid level controller couples the generated high-frequency ultrasonic pulse to the vessel wall through a couplant.

The pulse propagates in the wall of the container and in the liquid. It will also be reflected by the inner surface of the container. By detecting and calculating the characteristics of the reflected signal.

The measured data is transmitted to the on-site secondary meter through the 485 serial port in real time. It can be judged whether the liquid level reaches the position where the controller is installed.

Extended Reading: Procurement Guide for Ultrasonic liquid level sensors

Of course, the above is the working principle of this product HS-ULC-Pro Ultrasonic Non-contact liquid level controller.

There are other types of liquid level controllers on the market. The liquid level switch controller is a pressure sensor that measures liquid level. It is divided into contact type and non-contact type. We make a simple introduction to the measurement principle:

The pneumatic liquid level controller is used in conjunction with the control valve. Level control in oil and gas production.
Pneumatic level controllers are usually used to produce tanks, separators, etc.

The working principle of the pneumatic level controller:

In a pressurized container, you can use a pipe to draw the controller out of the container or air compressor to supply air. The liquid level controller uses a displacer connected to the controller to sense the liquid level. The displacer is located in the process fluid inside the separator.

When the liquid level increases and the displacer reaches the high set point, the liquid level controller sends a pneumatic signal to open the control valve.

When the liquid level drops and the displacer reaches a lower set point, the liquid level controller will eliminate the pneumatic signal to the valve and switch to exhaust. This allows the gas inside the valve actuator to be discharged through the level controller, thereby closing the valve.

This can be used with low pressure or high pressure pneumatic control valves.

The working voltage of the electronic liquid level switch is DC5V-24V.
The water level is detected by the built-in electronic probe.
Then the chip processes the detected signals.

When the liquid level of the tested liquid reaches the action point, the output is DC5V-24V.

It can be directly used in conjunction with PLC or in conjunction with the control board to realize the control of the liquid level.

Extended reading: Radar Non Contact Water Level Sensor

The Displacer level controller changes the magnetic float to a float. Displacer level transmitter uses tiny metal film strain sensing technology to measure liquid level, interface or density.

Such as Fisher DLC3010 Digital Level Controller

The float type liquid level controller is composed of a magnetic float, a measuring tube, a signal unit, an electronic unit, a junction box and installation parts. Generally, the specific gravity of the magnetic float is less than 0.5, which can float on the liquid surface and move up and down along the measuring tube.

A measuring element is installed in the catheter. It can convert the measured liquid level signal into a resistance signal proportional to the change of liquid level under the action of external magnetism. And convert the electronic unit into 4-20ma or other standard signal output.

The hydrostatic level controller works by using the measuring principle of hydrostatic pressure.
Generally, a silicon pressure sensor is used to convert the measured pressure into an electrical signal. Then it is amplified by the amplifier circuit and compensated by the compensation circuit. Finally, it is output in 4-20ma or 0-10ma current mode.

LD series Rigid Probe Magnetostrictive Level Transmitter
LR series Integral flange Magnetostrictive level sensor
LT series Digital Display Magnetostrictive liquid level sensor
SI-U01 Float Level Sensor
SIRD-905 Horn Antenna Radar Tank Level Sensor
SI-U02 Multi-Point Liquid Level Float Switch
ULT-200A Ultrasonic fuel tank level sensor
Portable Ultrasonic Liquid Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Liquid level control system for oil and gas

Through node sensors such as wireless temperature sensor + thermometer, wireless pressure sensor + pressure gauge and wireless liquid level sensor + liquid level gauge, the temperature, liquid level, pressure and other parameters of the storage tank are collected.

Upload to the wireless data collection gateway via 2.4G, 433MHZ wireless.

The gateway processes the data received from the wireless sensor node.

Provide data to the XL.VIEW server through the RS485 serial port, so as to monitor the production status of the storage tank and handle the limit alarm.

When the temperature, pressure, and liquid level of the storage tank are abnormal, the intelligent measurement and control device automatically drives the sound and light alarm to remind the staff.

Solution for real-time remote monitoring of liquid level, pressure and temperature of natural gas and oil storage tanks:

Application equipment:

  1. Wireless temperature sensor
  2. Wireless pressure sensor
  3. Wireless liquid level sensor
  4. Wireless data collection gateway
  5. Intelligent measurement and control terminal
  6. Server

Ultrasonic technology is not only used to measure level, but also can be used to measure depth. Get more.

Application field

The storage tank remote monitoring system is suitable for real-time monitoring of the safety of the storage tanks of various chemicals such as gasoline, solvent oil, isooctane, mixed aromatics, isobutane, liquefied petroleum gas, natural gas, etc.

You may like:

Liquid level controller price

Sino-Inst offers over 10 Ultrasonic Liquid Level Controllers for level measurement. About 50% of these are fuel level meters, 40% is the tank level sensor.

A wide variety of Ultrasonic Liquid Level Controllers for level measurement options are available to you, such as free samples, paid samples.

HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller reference price: USD 1500.00. The exact price depends on your measurement parameters.

Extended reading: Ultrasonic liquid level sensors

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Tank Level measurement instrumentation, located in China.

HS-ULC Ultrasonic Level Switch-External Mounted

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Ultrasonic Level Switch, External Mounted (referred to as “external level switch”) is a new type of level measurement alarm device.

Ultrasonic Level Switch is mainly used to detect the liquid level of the storage tank. It can realize the upper and lower limit alarm or monitor whether there is liquid in the pipeline (dry protection). The material of the storage tank can be various metals, non-metals or non-foamed plastics. The wall thickness can be Up to 70mm.

Ultrasonic level switch is installed outside the tank. No need to open holes in the tank. Non-Contact Measure. The ideal choice for tank level monitoring.

Features of HS-ULC Ultrasonic Level Switch

  1. Wide range of applications. It can be used to measure various liquid media in highly toxic, corrosive, high-pressure, various complex working conditions, and explosive gas environments.
  2. The installation can be without stopping production, unclearing the tank, and keeping the fire. The installation is convenient and the operation is simple.
  3. The instrument works reliably and has stable performance. Strong anti-interference ability.
  4. The meter does not require user maintenance, maintenance-free. Long service life.

Specifications of HS-ULC Ultrasonic Level Switch

ItemsValues
Power SupplyDC 24V(18~36V)   0.05A
Repeatability error±2mm
Measurable tank typeHorizontal tank, spherical tank, vertical tank, etc.
Tank wall thickness2-70mm
MaterialCast aluminum
Electrical interfaceDifferent types available for different operating condition
Time lag1-3 seconds
Explosion-proof MarkExdmIICT6
Ingress ProtectionIP65
Output signalRelay output (1 unit single-pole, double-throw control contact is passive nodes)
Relay capacityDC 30V 6A / AC 250V 6A
Diameter of threading holeΦ8mm ( adaptive cable diameter Φ6~8mm )
Ambient temperature-50℃~60℃ (-58 °F – 140 °F)
Ambient humidity15%~100%RH
CertificatesISO  SIL

Extended reading: The Secret of Ultrasonic Level Measurement

Ultrasonic Level Switch Working Principle

The sensor of the external liquid level switch couples the generated high-frequency ultrasonic pulse to the container wall through the couplant.

The pulse will propagate in the container wall and liquid, and will be reflected by the inner surface of the container.
By detecting and calculating the characteristics of the reflected signal, it can be judged whether the liquid level has reached the position where the controller is installed.

The liquid level controller can output a relay signal to facilitate the detection and control of the liquid level.

Ultrasonic technology is not only used to measure level, but also can be used to measure depth.

Ultrasonic Liquid Level Switch Applications

Ultrasonic Level Switch is not affected by factors such as medium density, dielectric constant, conductivity, reflection coefficient, pressure, temperature, precipitation, etc. It is suitable for various liquid levels in the pharmaceutical, petroleum, chemical, electric power, food and other industries Engineering control. Ultrasonic Level Switch is the ideal choice for the detection of toxic, highly corrosive, and dangerous liquid level.

Applied Industries

  • Petrochemical industry
  • Chemical industry
  • Foodstuffs
  • Pharmaceutical industry
  • Marine industry
  • Oil refining industry
  • Refrigeration industry

Applied Medium

Liquefied GasEthyleneHydrochloric AcidNitric AcidSulfuric Acid
PropyleneAqua CarbolisataEdible OilCrude OilLacquer Thinner
BrineButadieneChlorethyleneLight HydrocarbonCaustic Soda Liquid
MethylamineTolueneLight OilGasolineC3
KeroseneXylolOxalic AcidOxiraneAcetone
CarbinolEthanolDimethyl EtherDiethyl EtherDiesel
And More……

HS-ULC Ultrasonic Level Switch is specially used to measure the liquid level of tanks. Because it is installed on the outside of the tank, there is no need to punch holes, which is widely welcomed by customers.

Of course, if your tank already has holes, you can also choose other tank level transmitters.

Such as Liquid level float switch. Liquid level float switch is a commonly used liquid level controller. For water Tank & Pump alarm and level control. Can be divided into Continuous Float Level Sensor and Point Level Float Switch.

The ultrasonic principle can also be used to measure water depth. Please refer to Portable Ultrasonic Water Depth Gauge for water depth measurement.

Ultrasonic Level Sensor Working Principle

The working principle of the ultrasonic level senor: The high-frequency pulse sound wave emitted by the ultrasonic transducer is reflected on the surface of the measured level, and the reflected echo is received by the transducer and converted into an electrical signal. The propagation time of the sound wave is proportional to the distance from the sound wave to the surface of the object. The relationship between sound wave transmission distance S and sound speed C and sound transmission time T can be expressed by the formula: S=C×T/2.

Featured ultrasonic level sensors for tanks

Among various liquid storage tanks, ultrasonic level gauges are the most commonly used level gauges.
For open tanks, ultrasonic level sensors can be installed directly on the top of the tank.
For closed tanks, and an external ultrasonic sensor can be installed at the bottom.

Ultrasonic liquid level sensors use the propagation characteristics of waves in the medium. Ultrasonic transmitter and receiver can be installed at the bottom or top of the tank when measuring the tank liquid level. The emitted ultrasonic waves are reflected at the corresponding interface and received by the receiver. By measuring the time difference between the ultrasonic wave transmission and the reception, the liquid level can be measured.

ULT-100A Ultrasonic Level Transducer
ULT-200 Ultrasonic Level Detector
ULT-200A Ultrasonic fuel tank level sensor
ULT-100 Ultrasonic Level Indicator
Portable Ultrasonic Liquid Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller
Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Read more: Guide: Non-contact Ultrasonic Level Sensing transmitters

Float Level Sensors & Switches

The float level switch is a kind of level switch. The float level switch uses magnetic force to operate. No mechanical connections. The operation is simple and reliable. When the float switch floats the measured medium, the float moves the main body. At the same time, the magnet on the other end of the float will control the magnet on the switch action lever.

Frequently
Asked
Questions

Help Center

Ultrasonic level sensor is a monitoring instrument for measuring liquid height, tank height, and material position. The ultrasonic level sensor can adopt two-wire, three-wire or four-wire technology.
The two-wire system is: power supply and signal output are shared.
The three-wire system is: the power supply circuit and the signal output circuit are independent. When using DC 24v power supply, a 3-core cable can be used, and the negative terminal of the power supply and the negative terminal of the signal output share a core wire.
The four-wire system is: when using AC 220v power supply, or when using DC 24v power supply. When the power supply loop and the signal output loop are required to be completely isolated. A 4-core cable should be used.
DC or AC power supply, with 4~20mADC, high and low switch output.
Extended reading: Guide to Ultrasonic Level Transmitters

The function of the liquid level switch is to control the liquid level. For example, the water pump fills the pool with water, and the level switch can make the water in the water tank neither overflow nor empty, and there is always water. “

The ultrasonic sensor can of course measure the water level.
When the ultrasonic level gauge is working, the high-frequency pulse sound wave is emitted by the transducer (probe), and is reflected on the surface of the measured object (water surface). The reflected echo is received by the same transducer (probe) and converted into an electrical signal . The time between pulse sending and receiving (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 the sound wave transmission and the speed of sound C and the transmission time T can be expressed by the formula: S=　CⅹT /2
In addition to using ultrasonic level gauges for water level monitoring, users can also use radar, depth water level sensors and other technologies to monitor water level.
Extended reading: Radar Non Contact Water Level Sensor

Ultrasonic level measurement refers specifically to the use of ultrasonic level sensors for liquid level measurement. Ultrasonic level measurement is a non-contact measurement of liquid or solid materials.

Read more about Guide to Ultrasonic Level Transmitters

Ultrasonic Water Level Sensor refers to the ultrasonic level sensor used to measure the water level. Used for industrial liquid tanks, or river water level non-contact monitoring and control.

Read more about Ultrasonic water level sensors for Liquid Tanks-River Level 

Yes. Ultrasonic sensor measuring water level is a common application of the ultrasonic liquid level sensor. It can be used for water storage tanks or river water level measurement.

Liquid level switch, also known as water level switch, liquid level sensor. As the name implies, it is a switch used to control the liquid level.

In terms of form, it is mainly divided into contact type and non-contact type.

Commonly used non-contact switches include capacitive liquid level switches, and contact float-type liquid level switches are the most widely used. Electrode liquid level switches, electronic liquid level switches, and capacitive liquid level switches can also be realized by contacting methods.

Know more about Liquid Level Switch.

Sino-Inst offers over 10 Ultrasonic Level Switches for level measurement. About 50% of these are fuel level meters, 40% is tank level sensor.

A wide variety of Ultrasonic Level Switches for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Tank Level measurement instrumentation, located in China.

SIRD-909 Radar Non Contact Water Level Sensor

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Non contact water level sensor refers to the radar water level sensor. Radar Water Level Sensor is suitable for water level monitoring of lakes, rivers, reservoirs, open channels, and tidal water levels.

Radar Non-Contact Water Level Sensor adopts a non-contact measurement method and does not touch the water body. It is not affected by water quality, sediment and floating objects. The RS-485/RS-232/4-20mA interface can realize data long-distance wired transmission or docking with SCADA hydrological telemetry system. The measuring distance can be up to 70 meters.

Features of SIRD-909 Radar Non-Contact Water Level Sensor

  • High measurement accuracy and wide range;
  • The minimum blind area is 0.4 meters;
  • quick response;
  • No mechanical rotating parts. There are no problems such as silt blockage, water weeds, and debris entanglement;
  • The analog output can be adjusted arbitrarily;
  • With digital filtering and echo recognition functions;
  • Rugged and stable sensors are suitable for harsh industrial occasions;
  • Mature industrial process control pulse radar ranging technology, extremely stable.

Specifications of SIRD-909 Radar Non Contact Water Level Sensor

Application：Rivers, lakes, shallows
Measuring Range：70 meters
Process Connection：Thread G1½ʺ A / bracket / flange
Process  Temperature：-40～100℃
Process Pressure：Atmospheric
Accuracy：±10mm
Protection Grade：IP67/IP65
Frequency Range：26GHz
Supply：DC (6-24V) / four wire (6 ~ 24V DC) DC 24V / two wire (24V DC)
Signal Output：RS485/Modbus protocol 4~20mA/Hart two wires
On-site display:Optional
Housing: Aluminum/plastic

Radar Non Contact Water Level Sensor for water level monitoring installation

Radar Non-Contact Water Level Sensor is a high-precision non-contact water level measuring instrument, no logging is required. It is easy to install and can directly measure the water level of natural rivers.

Radar Non Contact Water Level Sensor field comparison test application test, analyze the accumulated measurement data and comparison test results. In order to expand the test results, provide a basis for the selection of water level gauges, and at the same time improve the water level measurement and reporting conditions of the hydrological station on the upper reaches of the Yellow River.

Let me introduce to you the installation diagram of Radar Non Contact Water Level Sensor.

Preparation and inspection before installation;

Please pay attention to the following matters to ensure that the meter can be installed correctly;

Please reserve enough space for installation;

Please avoid installation situations with strong vibration;

Please see the installation diagram description and installation location of the radar water level gauge below:

Radar water level gauge used in water conservancy project river water level monitoring installation diagram

When a radar antenna emits microwave pulses, it has a certain emission angle.

There should be no obstacles from the lower edge of the antenna to the surface of the measured medium, and in the area radiated by the microwave beam.

Therefore, shielding facilities should be avoided as much as possible during installation, and “false echo learning” must be carried out when necessary.

Also pay attention when installing the instrument: the highest liquid level must not enter the measurement blind zone. The meter must be connected to the ground, and lightning protection measures should be added. Outdoor shading and rainproof measures should be taken.

If you need to measure river water level, open channel level, etc. The Ultrasonic Liquid Level Sensor can be used for non-contact continuous level monitoring.

If you need to purchase liquid level gauge for CO2 Cylinders, you may like:

CO2 Cylinder | Portable Liquid Level Gauge

Procurement Guide: Ultrasonic liquid level sensors

Non Contact Capacitive Liquid Level Sensor

There are three commonly used non-contact liquid level sensors, namely capacitive liquid level sensors, ultrasonic liquid level sensors, and separate photoelectric liquid level sensors.

The non-contact liquid level sensor means that the liquid level can be detected without contacting the liquid. With this advantage, the application field of the non-contact liquid level sensor has been greatly expanded.

The capacitive liquid level sensor can detect the liquid level by attaching it to the container, so the installation process is simple. Capacitive liquid level sensors are mostly used in the field of home appliances because the positioning is due to the small size and low price of the sensor.

If the capacitive liquid level sensor is installed on the body, the container can be moved arbitrarily. For example, the capacitive liquid level sensor detects the low liquid level of the aromatherapy machine. When the sensor detects that the fragrance in the aroma diffuser bottle is only 20ml, it will give a signal to remind you. After the device receives the signal, it turns on the buzzer to alarm or light up to remind. At this time, the user can take the bottle to add liquid, or directly replace another bottle with a new one.

The disadvantage of capacitive liquid level sensors is that they can only be used on non-metallic containers. And it cannot detect liquids with low conductivity, such as diesel gasoline. It is also unable to detect high-temperature liquids. High-temperature liquid will cause the sensor to fail.

Non contact type water level sensor

Non contact level sensor is when the liquid level gauge measures the liquid level, the sensor does not need to touch the measured medium.

Common non contact level sensors include ultrasonic and radar.

Ultrasonic Level Sensing sensors and transmitters are used for continuous, non-contact level measurement.

Ultrasonic Level Sensing is a low-cost liquid level measurement technology. Ultrasonic Level Sensing sensors and transmitters are used for tank or river level measurement. Ultrasonic Level Sensing does not need to contact the medium, can be continuously measured, low cost. Therefore, Ultrasonic Level Sensing is very popular among users. Ultrasonic liquid level sensors are available in general and intrinsically safe types. Output 4~20mA standard signal or output the measurement result to the secondary meter through RS-485. Meets the system’s automatic control.

Radar level measurement uses Non-contacting radar technology for Continuous level measurement. Liquids and solids are commonly measured with this measuring technique.

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

Extended reading: Amazing Solutions for Continuous Liquid Level Measurement

Featured Non Contact Tank Level Sensors

HS-2000 Ultrasonic Tank Level Sensor-External Mounted

HS-2000 External Mounted Ultrasonic Tank Level Sensor- (referred to as “external level gauge”). It adopts advanced signal processing technology and high-speed signal processing chip. It breaks through the influence of container wall thickness. Realizes the height of the liquid level in the closed container True non-contact measurement.

The ultrasonic liquid level sensor (probe) is installed directly under the outer wall (bottom) of the container under test. Calibrate the outer wall of the probe. There is no need to open holes for the container to be tested, easy to install, and does not affect production. It can accurately measure the level of various toxic substances, strong acids, strong alkalis and various pure liquids in high-pressure airtight containers.

The HS-2000 External Mounted Ultrasonic Tank Level Sensor has no special requirements for the material of the liquid medium and the container. The explosion-proof design is adopted to meet the explosion-proof requirements.

SI-ML Portable Ultrasonic Liquid Level Indicator

Portable ultrasonic liquid level indicator is best choice for tanks or pipes level measurement. It is designed to measure the presence or absence of liquid at a certain height position in a tank or in pipelines. Non-contact ultrasonic detection technology.

SI-ML works perfect for detection of dangerous toxic or corrosive liquids. Under ordinary conditions, the maximum wall thickness of measurable containers is 30mm. The product is suitable for the detection of various types of liquids. Liquids are non-crystalline or other particulate matter. For example CO2 Tank. Thanks to non-contact detection technology, this level indicator is ideal for detecting hazardous toxic or corrosive liquids.

Read more about: Ultrasonic Water Level Sensors

More Water Level Sensors

Sino-Inst offers a variety of water level sensors for a wide range of conditions. Our sensors are ideally suited for monitoring water levels in streams, dams and reservoirs. Our water level sensor products include:

  • Submersible Pressure Transducers
  • Radar Level Sensors
  • Magnetostrictive Level Sensors
  • Pressure Transducers
  • Ultrasonic water level sensor

Frequently
Asked
Questions

Help Center

There are three commonly used non-contact liquid level sensors, namely capacitive liquid level sensors, ultrasonic liquid level sensors, and separate photoelectric liquid level sensors.

The non-contact liquid level sensor means that the liquid level can be detected without contacting the liquid. With this advantage, the application field of the non-contact liquid level sensor has been greatly expanded.

The working principle of the non-contact liquid level sensor:

Calculate the distance between the sensor and the measured object through the time of transmitting and receiving signals. Since the propagation speed in the air is constant, the distance between the liquid level sensor and the bottom of the container is constant, and the liquid level of the measured object can be known.

Ultrasonic sensors can detect the water level.

Ultrasonic sensors are widely used. There are many methods for liquid level measurement. Among them, the ultrasonic sensor has a simple structure, small size, low cost, simple and reliable information processing. Easy to miniaturize and integrate. And can be controlled in real-time. Therefore, the ultrasonic measurement method has been widely used. In addition, the accurate measurement of liquid level is an important guarantee for realizing production process detection and real-time control. It is also an important link to realize safe production.

The general photoelectric liquid level sensor installation is that only the light cone is in contact with the liquid. Therefore, the waterproof rating generally meets the conditions of IP64-67.

If you need to put the entire probe in the liquid, directly contact the liquid. Then the waterproof level IP64 cannot be achieved, and it needs to reach IP68.

The water level sensor supplied by Sino-Inst can meet the waterproof requirement of IP68.

Sino-Inst offers over 10 Radar Non Contact Water Level Sensors for level measurement. About 50% of these are Radar level meters, 40% is the tank level sensor.

A wide variety of Radar Non Contact Water Level Sensor for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of radar level measurement instrumentation, located in China.

SIRD-908 Radar Water Level Sensor

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Radar water level sensor is the ideal solution for measuring the water level in dams, ponds, rivers, reservoirs, etc.

Radar water level sensor is Non-contact water level sensor, for long term surface water measurements. SIRD-908 Radar Water Level Sensor adopts a transmitting frequency up to 26GHZ. The antenna is made of corrosion-resistant materials such as stainless steel and PTFE. It is suitable for measuring the height of the liquid level of rivers, lakes, reservoirs, and groundwater media. The maximum distance can reach 30 meters. Output 4- 20mA or RS485 signal.

Sino-Inst offers a variety of Frequency modulated continuous wave radar for industrial level measurement. If you have any questions, please contact our sales engineers.

CONTACT US
More Radar Level Sensors

Features of SIRD-908 Radar Water Level Sensor

  • All-weather work. 26GHz microwave reflection principle, strong anti-interference ability.
  • The sensor has a reliable accuracy of 3 mm.
  • No mechanical wear, non-contact measurement. Long life and easy maintenance
  • The measurement has nothing to do with water quality. It is not affected by floating objects such as floating ice
  • No need for wave wells. No effect on water flow
  • Unattended continuous online collection
  • Ultra-low power consumption. Support solar power supply
  • It can be used for wireless network transmission. No need to excavate cable trench. It has no impact on the construction of channel lining and tree planting.
  • Low cost. Simple installation and maintenance. Long life.

Specifications of SIRD-908 Radar Water Level Sensor

Application：Rivers, lakes, shallows
Measuring Range：30 meters
Process Connection：Thread G1½ʺ A / bracket / flange
Process  Temperature：-40～100℃
Process Pressure：Atmospheric
Accuracy：±3mm
Protection Grade：IP67 / IP65
Frequency Range：26GHz
Supply：DC (6-24V) / four wire DC 24V / two wire
Signal Output：RS485/Modbus protocol 4~20mA/Hart two wires
Housing: Aluminum single cavity / aluminum dual cavity /
plastic / stainless steel single cavity
Explosion-proof Grade：Optional

Radar Water Level Sensor working principle

Measuring principle:

Micro-power microwave pulses are emitted from the radar antenna and travel through space at the speed of light. It is reflected by the object to be measured and received by the radar.

The time difference between the transmission and reception of the pulse signal is proportional to the distance from the radar antenna to the measured object. The propagation speed of electromagnetic signals in space is the speed of light. Usually when measuring the distance, the time difference between the transmitted pulse and the received pulse is very short and only on the order of nanoseconds.

Conventional technology is difficult to accurately measure this time.

SIRD-908 Radar Water Level Sensor uses an advanced equivalent sampling method to accurately measure the original nanosecond time interval. So as to realize the accurate measurement of distance.

Transmit-reflect-receive:

The extremely tiny 26GHz radar signal is emitted in the form of short pulses from the antenna end of the radar level gauge.
The radar pulse is reflected by the sensor environment and the surface of the object and received by the antenna as a radar echo.
The rotation period of the radar pulse from emission to reception is proportional to the distance, that is, the level.

◆ Input
The antenna receives the reflected microwave pulse and transmits it to the electronic circuit. The microprocessor processes this signal. Identify the echo generated by the microwave pulse on the surface of the material.
The correct echo signal identification is completed by intelligent software, and the accuracy can reach millimeter level. The distance D from the surface of the material is proportional to the time travel T of the pulse:
D=C×T/2
Where C is the distance of the empty tank at the speed of light E is known, then the distance of the level L is: L=E-D

◆ Output
It is set by entering the empty tank height E (=zero point), the full tank height F (=full scale) and some application parameters. Application parameters will automatically adapt the meter to the measurement environment. Corresponds to 4-20mA output.

Extended reading: Amazing Solutions for Continuous Liquid Level Measurement

Radar Water Level Sensor Applications

  • River water level, automatic monitoring of open channel water level, water resource monitoring and water level measurement;
  • In front of the reservoir dam, the tail water level monitoring and surge tower (well) water level monitoring below the dam;
  • Automatic tide level monitoring system, urban water supply and sewage level monitoring system;
  • Mountain flood warning system water level monitoring, water level monitoring of small and medium rivers.

Extended reading: Capacitive water level sensor

Using the principle of radar wave reflection, the time required for transmission and reception can be converted into liquid level height or distance. This is a method often used in the field of liquid level monitoring. This non-contact method is stable and reliable, so it is widely used.

In the past, river water level monitoring generally used manual field measurements to obtain data. Although this method is reliable, it also has many problems, such as:

(1) There is a certain risk of manual field measurement on the river bank (the river is 5 meters deep).
(2) Do not stop working in bad weather.
(3) The measured value is not very accurate and can only be used as a reference.
(4) The labor cost is high, and field data records need to be performed many times a day.

Install radar water level gauges in the reservoir area to monitor water level changes. In the water level monitoring of many reservoirs, the radar water level gauge is selected to monitor the water level change, mainly considering that the radar water level gauge has the water level measurement value that is not affected by the weather and air pressure changes.

Moreover, the observation values ​​are accurate and the observation data are stable, and the depth of the observation water level is usually 30-50 or more.

To accurately measure the water level of river cofferdams and dams, ultrasonic liquid level sensor/radar water level sensor is used to accurately monitor the water level before and after the grid in real time.

Place the ultrasonic liquid level sensor/radar water level sensor bracket on the water surface. The signal can be sent to the PLC for processing of the collected amount.

And send the real-time water level and differential pressure data to the central control room, display and alarm over limit.

At the same time, the RS485/RS232 interface is adopted, and the real-time data is sent to the industrial computer in the centralized control room of the dam, and processed into computer communication messages,

Finally, the collected amount will be sent to the upper computer of the computer monitoring system of the power plant. This technology is widely used in many hydropower stations.

Read more about: Hydrostatic Submersible Level Transmitter-Straight Rod Insertion

Extended Reading: 3 inch (3″) Water Flow Meter

More Water Level Sensors

Sino-Inst offers a variety of water level sensors for a wide range of conditions. Our sensors are ideally suited for monitoring water levels in streams, dams and reservoirs. Our water level sensor products include:

Alternative to VEGAPULS 64-80GHz FMCW Level Radar

SIRD-906 Radar Sanitary Level Sensor

SIRD-909 Radar Non-Contact Water Level Sensor
SIRD-905 Horn Antenna Radar Tank Level Sensor
SIRD-804 Radar Solid Level Sensor
Portable Ultrasonic Liquid Level Indicator
Differential pressure(DP) level transmitter
Magnetic Level Gauge/Indicator
SIRD-701 Guided Wave Radar Level Sensor
SI-151 Hydrostatic Level Sensor
SI-U02 Multi-Point Liquid Level Float Switc
ULT-100A Ultrasonic Level Transducer

Frequently
Asked
Questions

Help Center

The radar level sensor uses ultra-high frequency electromagnetic waves to transmit to the liquid level of the detected container through the antenna. When the electromagnetic wave hits the liquid level, it is reflected back. The instrument detects the time difference between the transmitted wave and the echo, thereby calculating the height of the liquid level.
The better the conductivity of the measured medium or the greater the dielectric constant, the better the reflection effect of the echo signal.

First of all, the radar level meter can definitely measure the water level. Please use it with confidence.

Again, consider how much the measurement range is. If it is a short range, there is no need to use it, it is too wasteful and the cost is too high.

If you want to use it well, the short-range magnetostrictive liquid level sensor is economical and has better accuracy than radar in all aspects.
If you want to reduce costs, the submersible hydrostatic level sensor is suitable.

Common water level sensors can be used for water level.

There are many types of water level sensors, so their specific measurement principles are different.
If you need to learn more. You can refer to:
Differential pressure type liquid level measuring instrument;
Float level measuring instrument;
Electric liquid level measuring instrument;
Ultrasonic liquid level measuring instrument;
Radar liquid level measuring instruments, etc.

Extended reading: Capacitive water level sensor

Among the many water level sensors, contact measurement is required: submersible hydrostatic pressure level sensors, differential pressure level transmitters, float level sensors, magnetostrictive level sensors, and capacitive level sensors. You can learn how they work separately.

The river water level monitoring system is intended to monitor the water level scientifically and effectively. In order to prevent the water level from being too high or too low, it is an important means to prevent flood disasters.

The system is mainly composed of radar level gauge, solar power supply system, GPRS wireless transmission and other equipment. It has the functions of collecting information, data analysis, over-water level alarm, and predicting water level. It is a good helper for the government and flood control departments, effectively reducing people’s property losses.

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Sino-Inst offers over 10 Radar Water Level Sensors for level measurement. About 50% of these are Radar level meters, 40% is the tank level sensor.

A wide variety of Radar Water Level Sensor for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Radar Water Level Sensor instrumentation, located in China.

HS-2000 Ultrasonic Tank Level Sensor-External Mounted

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The HS-2000 External Ultrasonic Tank Level Sensor is a Non-invasive/non-contact device that accurately measures liquid levels in sealed tanks. To measure the liquid level in the tank by sticking an external sensor to the bottom of the tank. Its advanced technology and easy installation make it ideal for various liquids, including toxic or acidic ones.

RFQ

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

More Ultrasonic Level Sensing

External ultrasonic tank level sensor

HS-2000 External Mounted Ultrasonic Tank Level Sensor- (referred to as “external level gauge”). It adopts advanced signal processing technology and a high-speed signal processing chip. It breaks through the influence of container wall thickness. Realizes the height of the liquid level in the closed container True non-contact measurement.

The ultrasonic liquid level sensor (probe) is installed directly under the outer wall (bottom) of the container under test. Calibrate the outer wall of the probe. There is no need to open holes for the container to be tested, easy to install, and does not affect production.

It can accurately measure the level of various toxic substances, strong acids, strong alkalis, and various pure liquids in high-pressure airtight containers.

The HS-2000 External Mounted Ultrasonic Tank Level Sensor has no special requirements for the material of the liquid medium and the container. The explosion-proof design is adopted to meet the explosion-proof requirements.

Features of HS-2000 Ultrasonic Tank Level Sensor

  • Non-contact measurement function ——– Ultrasonic sensor probe is external. No need to open a hole in the container to be tested.
  • Auto-calibration function——–With self-calibration function. It overcomes the problem of reduced accuracy after the long-term use of traditional liquid level gauges.
  • Infrared online debugging function——–Applicable to occasions where it is not suitable to open the cover for testing in dangerous situations. At the same time, it reduces the difficulty of debugging.
  • Self-diagnosis function——–It has its own working status diagnosis function. It also has a hardware diagnosis function. It enhances the reliability and stability of the level gauge.
  • One-key recovery function——–When the external measuring level gauge works abnormally, it can be restored to the normal state with one key through the debugger.
  • Local display and remote transmission function——–The level gauge can not only display the level value on the spot in time. But also remotely transmit it to the control room through the signal line.

Specifications of HS-2000 Ultrasonic Tank Level Sensor-External Mounted

Measuring range3m, 5m, 10m, 20m, 30m
Display resolution1mm
Short time repetition1mm
Measurement error±1‰FS (Excessive wall thickness and   temperature/pressure instability may affect measurement precision.)
Span shift±10 m
Current output4～20mA，Max   load 750Ω
Communication interfaceRS-485,    IrDA
Operating ambient temperature for liquid level meter-30℃～+70℃
Operating ambient temperature for ultrasonic probe-50℃～+100℃
(Probes with a wider temperature range can be provided upon request）
Operating ambient humidity15%～100%RH
Explosion proof markEx d ⅡC T6 Gb
Housing ingress protectionIP 67
Volume percentage display4-digit OLED display
Blind areaThere is a small blind area for the   liquid level meter that should be noted

Mediums that Ultrasonic Tank Level Sensor can measure

Liquefied GasLiquid AmmoniaDimethyl etherLiquid ChlorineHydrochloric Acid
PropyleneAqua CarbolisataLacquer ThinnerMTBEDimethylhydrazine
Nmethyl anilinejuButadieneChlorethyleneLight HydrocarbonBromine
Anhydrous Hydrogen FluorideTolueneMethylamineGasolineC3
Liquefied Carbon dioxideXylolCarbon DichlorideEpoxyethaneAcetone
Plant OilEthanolFreonDiethyl EtherDiesel
EthyleneSulfuric AcidMethanolKeroseneNitric Acid
And More……..

Ultrasonic Tank Level Sensor’s Application

  • Petrochemical industry
  • Chemical industry
  • Foodstuffs
  • Pharmaceutical industry
  • Marine industry
  • Oil refining industry
  • Refrigeration industry

Extended reading: Fuel-Diesel-Water Tank Level Sensor Monitoring

Chemical industry.
Common medium: liquid ammonia,liquid chlorine, hydrochloric acid, bromine, 
chlorethylene,sulfuric acid, freon, and nitirc acid.

Coal chemical industry 
Common medium: freon,liquid ammonia, butadiene, H2S.

Petrochemical industry.
Common medium : liquefied gas, propylene, ethylene, butadiene, light hydrocarbon, C3. 

Power, food, pharmaceutical industries and so on.  

Extended reading: Radar Oil Tank Level Sensor

In addition to measuring tank level, we also provide Portable Ultrasonic Water Depth Gauge for water depth measurement.

External Ultrasonic Tank Level Sensor Working Principle

The External Ultrasonic Tank Level Sensor adopts the sonar echo ranging principle. It overcomes the influence of the tank wall on the transmission of ultrasonic signals. It adopts advanced digital signal processing technology. It can truly realize non-contact, high-precision measurement of the liquid level in the tank.

The External Ultrasonic Tank Level Sensor can output 4-20mA standard signals or output the measurement results to the upper computer (or secondary meter) through the RS-485 interface. It can meet the automatic control of the system.

Extended reading: The Secret of Ultrasonic Level Measurement

Application Requirement

1.Medium’s Purity Degree
Liquids should not contain dense foam
There should be minimal suspended objects in the liquid, such as crystallized particles, etc.
There should be minimal precipitation in the tank, such as mud, sand, etc.

2.Tank Material：Carbon steel, stainless steel. Various hard metals. Glass fiber-reinforced plastics. Epikote, rigid plastics, ceramics. Glass, ebonite. Other composite materials.

3.Tank Shape：Spherical, horizontal and vertical tanks are permitted.

If you need to measure river water level, open channel level, etc. The Ultrasonic Liquid Level Sensor can be used for non-contact continuous level monitoring.

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

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

Read more about: 5 Industrial Propane Tank Level Indicators

Oil level sensor is very important for monitoring the level of oil tank/fuel tank. Ultrasonic Oil Level Sensor is mainly used for monitoring the level of truck oil tank. Oil level display and transmit.

Read more about: Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Ultrasonic Water Level Sensor refers to the ultrasonic level sensor used to measure the water level. Used for industrial liquid tanks, or river water level non-contact monitoring and control.

Ultrasonic Water Level Sensor is also often called “Ultrasonic Level Sensor”, “Ultrasonic Level Detector”, “Ultrasonic Level Sensor 4-20ma” or “Ultrasonic Level Transmitter” “Ultrasonic liquid level sensor”

Read more about: Ultrasonic Water Level Sensors

The Non Contact Liquid Level Sensor is not in contact with the measured medium. The Non Contact Liquid Level Sensors provided by Sino-Inst are not Gravity Non-contact Liquid Level Sensors. It is the liquid level sensor used in industrial tanks, reservoirs and open channels. There are mainly ultrasonic level sensors and radar level sensors.

Read more about: Non Contact Liquid Level Sensor

Read more about: Top 5 Ultrasonic Level Sensor Applications

How to Choose an Ultrasonic Tank Level Sensor?

To choose a suitable Ultrasonic Tank Level Sensor, users need to understand their measurement conditions and needs.

  • Are you measuring a liquid or bulk material?
  • What is the size of the tank? What level measurement range do you need?
  • Is the location classified as a Hazardous Location or Explosive Atmosphere?
  • Point level or continuous measurement?
  • Will the material coat or buildup on surfaces?
  • Does turbulence, foam, or vapor occur at the surface of the liquid?
  • What kind of output will you need?
  • Installation location and installation size?

Extended reading: Guide to Ultrasonic Level Transmitters

Ultrasonic tank level bottom sensor

The ultrasonic sensor (probe) is installed at the bottom of the tank’s external surface without the need for drilled holes in the tank. This allows for quick, simple installation that does not interrupt the tank’s operation.

External Ultrasonic Tank Level Sensor Installation

There are 4 holes on the base of the main body. It can be fixed in different positions by bolts. The user can decide according to the working site.

When the instrument host is installed, it is recommended to use the instrument protection box in areas with relatively low temperature to prevent the instrument temperature from being too low.

In areas with high temperature, the instrument should be installed in a cool place to avoid excessive temperature in the instrument caused by exposure.

The display screen of the main unit of the instrument cannot be exposed to sunlight for a long time.

For iron containers, you can apply silicone grease to the working surface of the sensor and use a magnetic suction cup to directly tightly attach it to the bottom of the container.

If the container shell is made of glass and other materials, the sensor can be pasted and fixed with glue or fixed to the bottom of the container with a bracket.

  • The direction of the sensor must be perpendicular to the measured liquid level.
  • There are no obstructions such as coils directly above the sensor;
  • Keep away from the liquid inlet at the bottom of the tank to avoid the influence of the violent flow of the liquid on the measurement;
  • Keep away from the position below the liquid inlet on the top of the tank. Avoid the impact of the liquid inlet and the violent fluctuation of the liquid level to affect the measurement;
  • It is higher than the liquid outlet or the sewage outlet. To avoid the influence of long-term deposits on the bottom of the tank on the measurement. If the conditions are not met, measures should be taken to ensure that the bottom of the tank is regularly removed;
  • When the liquid level sensor is installed by magnetic or welding/adhesive fixing method. The installation surface size on the container wall should not be less than the round surface of ∅80. The surface roughness should reach 1.7. The inclination should be less than 3° (except the bypass pipe).

Horizontal tank: choose a position inside the tank bottom support and far away from the liquid inlet

Installation of Ultrasonic Tank Level Sensor in Horizontal Tank

Spherical tank:

For new tanks, if the manhole flange is not planned to be opened in recent years, and there is few liquid deposits, it is best to install it on the manhole flange. Because of the surface level, the signal is strongest.

Installation of Ultrasonic Tank Level Sensor in spherical tank

When opening the inlet flange, remove the liquid level sensor first. After the inlet flange is installed and fixed, the liquid level sensor can be reinstalled.

If the deposits are not cleaned for a long time, a large amount of deposits may accumulate on the inner surface of the flange. In this case, the sensor installation position that can work stably for a long time is a circle around the manhole flange.

Here, the level is small, the sediment is small, and there is no rapid liquid flow interference. Although the signal for the new tank without sinking is not strong on the flange, it works stably for a long time.

Vertical tank:

Generally, choose the installation groove far from the liquid inlet and outlet (more than 90°).

Installation of Ultrasonic Tank Level Sensor in Vertical Tank
Installation of Ultrasonic Tank Level Sensor in Vertical Tank with a bypass pipe

For spherical tanks equipped with a calibrator. The calibration sensor is installed at the center of the calibrator on the outer wall of the tank.

If the calibrator is not installed, the calibration sensor should be installed at the height of the outer radius of the tank (equatorial zone).

The calibration sensors for the vertical tank and the process tank are installed on the outer side of the tank body, at a height of 0.5m to 1m from the tank bottom.

Note: After installing the calibration tube (calibrator) in the tank, the correct installation position should be marked with paint on the outside of the tank wall in time.

Extended reading: ultrasonic level sensor for diesel tank

HS-2000-External-Ultrasonic-Liquid-Level-Meter-20220418Download

Featured Tank Level Sensors

LT series Digital Display Magnetostrictive liquid level sensor
SIRD-905 Horn Antenna Radar Tank Level Sensor
SIRD-705 GWR Level Sensor for High Temperature & High Pressure
SI-PCM261 Submersible Pressure Transducer
ULT-100A Ultrasonic Level Transducer
ULT-200 Ultrasonic Level Detector
SIRD-704 Coaxial Probe Guided Wave Radar Level Transmitter
SIRD-902 Drop Antenna Radar Tank Level Sensor
SI-U01 Float Level Sensor
Portable Ultrasonic Liquid Level Indicator
HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller
Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

FAQ

When the ultrasonic liquid level sensor is working, the high-frequency pulse sound wave is emitted by the transducer (probe). It is reflected on the surface of the measured object (water surface). The reflected echo is received by the same transducer (probe) and converted into an electrical signal . The time between sending and receiving 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 the transmission time t can be expressed by the formula: s=cⅹt/2
Acoustic wave is a kind of media that transmits information. It is closely related to mechanical vibration. The mechanical vibration produced by the impact and movement of objects spreads outward in the form of waves. According to the frequency of the wave generated by the vibration, it is divided into audible sound waves, infrasound waves and ultrasonic waves. The sound waves higher than 20khz are called ultrasonic waves.

Yes, of course the water level can be measured with an ultrasonic level sensor.
For water depth detection, the water depth calculation can be found through the distance between the ultrasonic sensor transceiver and the water surface. The sensor will send a short ultrasonic pulse and measure the propagation time of the pulse to the liquid and back. Then calculate the total depth of the water tank and subtract this distance to determine the water depth.
This method of measuring with ultrasonic sensors more accurately describes water level measurement.
Read more about: Water Tank Level Sensors for Level monitoring and Auto-control

If the tank has an opening, we can use an integrated ultrasonic level sensor.
If the tank level signal needs to be transmitted remotely, we can use a split ultrasonic level sensor.
If the tank cannot be opened. You can use External Mounted Ultrasonic Tank Level Sensor.
If the tank is small, such as a CO2 tank, a portable ultrasonic level indicator can be used.

An ultrasonic sensor sends sound waves to the water in the tank. When the waves bounce back, the sensor measures the time it took. It then calculates the distance, showing how much water is in the tank.

The “ultrasonic level” of a tank refers to the measurement of the tank’s contents. This is done using sound waves from an ultrasonic sensor.

There are several ways to measure tank level. One of the best is using an ultrasonic sensor. It’s reliable, safe, and doesn’t need to touch the liquid in the tank. Other methods can include radar level sensors and pressure transducers, but the best choice depends on the specific application.

More Level Measurement Solutions

Sino-Inst offers over 10 Ultrasonic Tank Level Sensors for level measurement. About 50% of these are fuel level meters, 40% is the tank level sensor.

A wide variety of Ultrasonic Tank Level Sensor for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Tank Level measurement instrumentation, located in China.

Request a Quote

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SIRD-906 Radar Sanitary Level Sensor

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Sanitary Level Sensor is a radar level measuring instrument. The preferred level sensor for level measurement requiring Hygienic requirements.

Sanitary Level Sensor is a radar level measuring instrument. The liquid level is measured using the principle of the time difference between the occurrence and reception of the radar wave. It is non-contact, hygienic, high-precision, not affected by pressure, and can meet most measurement needs. It is suitable for liquid level measurement with sanitary requirements such as food and pharmaceuticals. The product has a display, optional explosion-proof, and a maximum range of 25 meters can be set.

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

CONTACT US
More Radar Level Sensors

Features of SIRD-906 Radar Sanitary Level Sensor

1) Requirements for non-toxic and harmlessness of radar level gauge materials: different grades of stainless steel materials (304L, 316L, 410, 409, 329) are selected according to different conditions.

The selected polymer materials, various rubber elastomer materials, adhesives, lubricants, measuring conductive fluid materials, thermal insulation materials, outer plating materials, etc. must not contain toxic and harmful components, and must not have toxic and harmful components seep or infiltrate Wait.

2) The structure of the radar level gauge: the surface is smooth and clean (the surface polishing is preferably less than 0.8um), and there is no dead angle. It is not easy to accumulate residue, pollution and easy to wash.

3) Radar level meter certification: sanitary instruments usually need to obtain 3A sanitary certification. Or can obtain a third-party sanitation test report to meet GMP/FDA requirements.

Specifications of SIRD-906 Radar Sanitary Level Sensor

Application：Hygienic liquid storage container, strong corrosive container
Measuring Range：20 meters
Process Connection：Flange
Process  Temperature：-40～130℃(standard type) / -40～200℃(high temperature type)
Process Pressure：-0.1～4.0MPa
Accuracy：±3mm
Protection Grade：IP67
Frequency Range：26GHz
Supply：Two-wire system (DC24V) / Four-wire system (DC24V/AC220V)
Signal Output：Exia ⅡC T6 Ga / Exd IIC T6 Gb
Outer Covering：Aluminum Single Chamber / Aluminum Dual Chamber / Plastic / Stainless Steel Single Chamber
Explosion-proof Grade：4…20mA/HART (two-wire/four-wire) / RS485 Mod bus
Antenna MaterialStainless steel / PTFE

Ultrasonic vs Radar Level Sensor

There are three main differences between Ultrasonic and Radar Level Sensor:

Difference 1. The measurement range is different

Ultrasonic liquid level du measuring range: 0-50 meters;

The radar level gauge can measure all media with a dielectric constant> 1.2 in a vacuum, and the measurement range can reach 70 meters.

Difference 2: Different emission materials

The ultrasonic level gauge emits sound waves from the sensor (transducer), which is reflected by the liquid surface and then received by the same sensor or ultrasonic receiver;

Very short microwave pulses with very low energy emitted by the radar level gauge are transmitted and received through the antenna system, and the radar waves move at the speed of light.

Difference 3: Different measuring substances

Ultrasonic level gauges are widely used to measure the height of various liquids and solid materials. Water and sewage treatment. Pump house, collection well, biochemical reaction tank, sedimentation tank, etc. Electric power, mines: mortar pool, coal slurry pool, water treatment, etc.

The radar level gauge can measure liquid and solid media. For example: crude oil, slurry, raw coal, pulverized coal, volatile liquid, etc.

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

Radar Water Level Sensor

Pulse radar level transmitters provide water level measurement based on directly measuring the running time of microwave pulses transmitted to and reflected from the surface of the river being measured. Using rs485 two-wire signal transmission, power supply and low power consumption are safe for outdoor use.

RS485 interface can be connected with 485 line, insert 4g sim card in dtu. 232 to usb to connect to the computer. Open the configuration tool and set the server address and port in the dtu configuration tool.

The server port monitors to receive the data, and it can be analyzed according to the sensor protocol. If the platform is developed to the modbus standard, the sensor also supports modbus. The whole analysis process will be simpler.

Realize remote monitoring and management of liquid level and water level outdoors. Both dtu and sensor industrial-grade outdoor design can be powered by solar energy. Therefore, radar water level gauges can be used in some of the most challenging water level applications.

Advantages:

  • dtu rs485 bus access. Multi-device access, support rs232 interface;
  • Strong compatibility. Can be connected to five-parameter water quality equipment. Multiple sensors use one gateway;
  • Installed on the shore of the water area, on the measuring frame or “extension arm”. Adjust the mounting bracket according to the terrain;
  • The installation is simple and the price is low. No need for expensive installation procedures;
  • Low power consumption power supply enables the equipment to operate independently in the most remote areas;
  • Non-contact measurement principle. Not damaged by silt accumulation or debris;
  • Wireless transmission, avoid the trouble of pulling cables. Install and use, remotely unattended;
  • High-level industrial requirements for the appearance of the iron shell. Application in hazardous areas and harsh environments;

Extended reading: Radar Level Meter for Corrosive Liquids

More Water Level Sensors

Sino-Inst offers a variety of water level sensors for a wide range of conditions. Our sensors are ideally suited for monitoring water levels in streams, dams and reservoirs. Our water level sensor products include:

SI-151 Hydrostatic Level Sensor
SI-FMF11 FMCW Radar Level Transmitter 120GHz
SI-FMF12 Frequency Modulated Continuous Wave Radar Level Sensor
LR series Integral flange Magnetostrictive level sensor
LT series Digital Display Magnetostrictive liquid level sensor
Differential pressure(DP) level transmitter
ULT-100A Ultrasonic Level Transducer
Portable Ultrasonic Liquid Level Indicator

Sino-Inst offers over 10 Radar Sanitary Level Sensors for level measurement. About 50% of these are Radar level meters, 40% is tank level sensor.

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

Sino-Inst is a globally recognized supplier and manufacturer of radar level measurement instrumentation, located in China.

Request a Quote

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SIRD-905 Horn Antenna Radar Tank Level Sensor

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Horn Antenna Radar Tank Level Sensor is a common non-contact tank level meter. Suitable for high temperature sealed storage tank. Support customized high temperature 500-1000℃.

Horn Antenna Radar Tank Level Sensor has good focusing characteristics and can be applied to most tanks. If the corresponding cooling measures are adopted, the temperature of the measured medium can reach 500-1000℃. The maximum measuring distance is 35 meters. It can be used for level measurement of storage tanks, intermediate buffer tanks or process vessels. But it is not suitable for measurement of corrosive media. Output 4~20mA superimposed HART signal.

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

CONTACT US
More Radar Level Sensors

Features of SIRD-905 Horn Antenna Radar Tank Level Sensor

  • Non-contact continuous liquid level measurement with larger range
  • High-precision and precise transit time measurement brought by high-frequency pulse waves
  • Sealed pressurized container will not affect performance
  • Longer range than ultrasound
  • If the corresponding cooling measures are adopted, the temperature of the measured medium can reach 1000°C.

Specifications of SIRD-905 Horn Antenna Radar Tank Level Sensor

Application：Solid particles, powder
Measuring Range：Liquid 35 meters / solid block 20 meters / solid powder 15 meters
Process Connection：Thread, flange
Process  Temperature：-40～130℃(standard type) / -40～250℃(high temperature type)/customized high temperature
Process Pressure：-0.1～4.0 MPa (flat flange) -0.1～0.3 MPa (universal flange)
Accuracy：±15mm
Protection Grade：IP67
Frequency Range：26GHz
Supply：Two-wire system (DC24V) / Four-wire system (DC24V/AC220V)
Signal Output：Exia ⅡC T6 Ga / Exd IIC T6 Gb
Outer Covering：Aluminum Single Chamber / Aluminum Dual Chamber / Plastic / Stainless Steel Single Chamber
Explosion-proof Grade：4…20mA/HART (two-wire/four-wire) / RS485 Mod bus
Antenna MaterialStainless steel 316L horn/PTFE vibrator, cone antenna

Radar Tank Level Sensor Applications

  • Power plants: coal piles, raw coal silos, fuel silos, reservoirs, waste gas purification tanks, silo pumps, ash storage, fuel tanks, etc.;
  • Oilfield: crude oil or product oil storage tanks, three-phase separators, settling tanks, sewage tanks and oil-water interfaces, drilling mud tanks, etc.;
  • Chemical industry: crude oil distillation tower, raw material and intermediate silo, reaction tank, ammonia tank, solid silo, separator, etc.;
  • Metallurgy: ore silo, ore crusher, raw material silo, auxiliary silo, blast furnace, alumina powder silo, electrolytic cell buffer tank, etc.;
  • Papermaking: raw material warehouse, storage tower, drying drum, chemical material storage warehouse, etc.;
  • Cement: storage warehouse for stone, raw meal, cement, coal powder, slag, etc.;
  • Water treatment: water storage, sewage, sedimentation, deep well, drinking water and other pools;
  • Others: quarry, food, pharmaceutical, environmental protection, shipbuilding and other industries;

Extended reading: Radar level sensor for solids – Dust solid level measurement

Radar Tank Level Sensor Installation Notes

(1) The horn of the horn-type intelligent radar level gauge must exceed the inner surface of the mounting hole by a certain interval (at least greater than 10mm).

(2) The axis of the antenna of the intelligent radar level gauge should be perpendicular to the reflective surface of the liquid level.

In addition, when performing routine maintenance on the intelligent radar level gauge, users can remotely observe the reflected wave curve with a PC (equipped with MAT software). For interference waves that may be newly generated later, the level gauge can be used to identify false waves. Remove the influence of these interference reflection waves to ensure correct measurement.

(3) Objects such as the stirring valve in the tank, the adhesion of the tank wall and the path. If it is within the signal range of the intelligent radar level gauge, it will produce interfering reflected waves and affect the level measurement. When installing, choose a suitable installation location to avoid interference from these factors.

Extended reading: Radar Level Meter for Corrosive Liquids

Radar Tank Level Sensor Installation Guide:

Be installed in the diameter of the 1/4 or 1/6.   

Note: The minimum distance from the tank wall should be 200mm.

Note:  ① datum

②The container center or axis of symmetry

The top conical tank level, can be installed at the top of the tank is intermediate, can guarantee the measurement to the conical bottom.  Extended Reading: Case: High Temperature Radar Level Transmitter for Melted Salt-Solar Photovoltaic Power Station

A feed antenna to the vertical alignment surface.  

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

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

Extended reading: guided wave radar level sensor advantages and disadvantages

Radar Level Sensor Working Principle

Radar level transmitter antenna microwave pulse is narrow, the downward transmission antenna.

Microwave exposure to the medium surface is reflected back again by the antenna system receives, sends the signal to the electronic circuit automatically converted into level signals.

Because the microwave propagation speed, electromagnetic wave to reach the target and the reflected back to the receiver this time is almost instantaneous.

A    Range set

B    Low adjustment

C    High

D    Blind area

Datum measurement:  Screw thread bottom or the sealing surface of the flange.

Note: Make sure the radar level meter the highest level cannot enter the measuring blind area (Figure D shown below).

Extended reading: GWR Solid Level Sensor-Cement silo-Ash powder measure

Featured Tank Level Sensors

SIRD-902 Drop Antenna Radar Tank Level Sensor
SI-FMF15 FMCW Radar High Temperature Level Sensor
SIRD-703 GWR Bulk Solids & Powder Solid Level Sensor
ULT-100A Ultrasonic Level Transducer
Portable Ultrasonic Liquid Level Indicator
LD series Rigid Probe Magnetostrictive Level Transmitter
LR series Integral flange Magnetostrictive level se
SI-U02 Multi-Point Liquid Level Float Switch

FAQ

What is the difference between radar and ultrasonic level transmitter?

In actual application, there are two methods for radar level sensors, namely, frequency modulated continuous wave type and pulse wave type. The liquid level sensor using FM continuous wave technology has high power consumption, must adopt a four-wire system, and the electronic circuit is complicated. The liquid level sensor using radar pulse wave technology has low power consumption and can be powered by two-wire 24VDC, which is easy to achieve intrinsic safety and has a wider application range.
Ultrasonic sensors use sound waves, and radar uses electromagnetic waves. This is the biggest difference.
Moreover, the penetrating ability and directivity of ultrasonic waves are much stronger than electromagnetic waves, which is why ultrasonic detection is more popular now.
The difference between the main applications:
　　 1. Ultrasonic accuracy is not as good as radar.
　　 2. The relative price of radar is relatively high.
　 3. When using radar, consider the dielectric constant of the medium.
　　 4. Ultrasound cannot be applied to working conditions such as vacuum, high steam content or foam on the liquid surface.
　　 5. The radar measurement range is much larger than that of ultrasonic.
　　 6. The radar has a horn type, a rod type, and a cable type. Compared with ultrasonic, it can be applied to more complicated conditions.

Read more: Guide: Non-contact Ultrasonic Level Sensing transmitters

What are the different types of level sensors?

Types of Level Transmitters:
Level measurement transmitters are of seven types. Each type of transmitter works in a different way, and makes it useful for different types of processes.
Capacitance Level Transmitters
Hydrostatic Level Transmitters
Magnetic Level Transmitters
Radar Fill Level Transmitters
MUltrasonic Level Transmitter
Guided Microwave Level Transmitters
Hydrostatic level transmitters

Extended reading: GWR Solid Level Sensor-for Cement silo-Ash powder measure

Sino-Inst offers over 10 Horn Antenna Radar Tank Level Sensors for level measurement. About 50% of these are Radar level meters, 40% is the tank level sensor.

A wide variety of Radar level Sensor for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of radar level measurement instrumentation, located in China.

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