Monthly Archives: June 2020

Ultrasonic Level Sensing

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

Ultrasonic Level Sensing

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.

Sino-Inst offers a variety of ultrasonic liquid level sensors and transmitters for continuous, non-contact tank level measurement. If you have any questions, please contact our sales engineers.

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Featured Non Contact Ultrasonic Level Sensing Devices

ULT-100A Ultrasonic Level Transducer
ULT-200 Ultrasonic Level Detector
ULT-200A Ultrasonic fuel tank level sensor
ULT-100 Explosion-proof Ultrasonic Level Indicator
Portable Ultrasonic Liquid Level Indicator
HS-2000 Ultrasonic Tank Level Sensor-External Mounted
HS-ULC Ultrasonic Level Switch-External Mounted
HS-ULC-Pro Ultrasonic Non-contact Liquid Level Controller
Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank
Ultrasonic Sludge Interface Meter /
Sludge Level Meter
Portable Ultrasonic Water Depth Gauge

What is Ultrasonic Level Measurement?

Ultrasonic Level Sensing measures liquid levels based on the principle of ultrasound. When ultrasonic waves encounter a high-density medium while propagating in a low-density medium, they cannot penetrate the high-density medium. There will be reflections at the interface of the two media. The ultrasonic liquid level gauge is made using this feature.

In the measurement, the ultrasonic pulse is emitted by the sensor (transducer), and the sound wave is reflected by the liquid surface and then received by the same sensor or ultrasonic receiver. Through piezoelectric crystal or magnetostrictive device into electrical signals. The distance between the sensor and the measured liquid surface is calculated by the time between the transmission and reception of sound waves.

Due to the non-contact measurement, the measured medium is almost unlimited. It can be widely used to measure the height of various liquid and solid materials.
The ultrasonic liquid level transmitter is composed of three parts: ultrasonic transducer, processing unit and output unit.

Ultrasonic Level Sensor Working Principle

The working principle of the ultrasonic liquid level sensor is:

Ultrasonic transducer (probe) emits high-frequency pulse sound waves, and the surface of the measured level (material) is reflected back. 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 the sound wave transmission distance S and the sound speed C and the sound transmission time T can be expressed by the formula: S=C×T/2.

Image Source： https://www.coulton.com/beginners_guide_to_ultrasonic_level_transmitters.html

The probe part emits ultrasonic waves, which are then reflected by the liquid surface. The probe part is received again. The distance from the probe to the liquid (object) surface is proportional to the elapsed time of the ultrasonic wave:
hb = CT2
Distance [m] = time × speed of sound/2 [m]
The temperature compensation formula of sound velocity:
Ambient sound velocity = 331.5 + 0.6 × temperature

Ultrasonic Level Sensor Advantages and Disadvantages

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

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

More about: Top 5 Ultrasonic Level Sensor Applications

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

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

FAQ

Can ultrasonic sensor detect water level?

Ultrasonic liquid level sensor can be used for water level measurement. The principle of ultrasonic reflection used. According to the contact between the sound wave emitted by the pool ultrasonic liquid level gauge and the liquid surface. According to the length of time it reflects back. To measure the height of the liquid level in the tank.
Liquid level sensors are used in many sites to detect some conditions that require liquid level monitoring. It is well known that the liquid level of some sewage treatment tanks, the liquid level on the tank, the liquid level on the river channel and so on.
Extended reading: Case Study: Automatic Sludge Blanket Level Detector

How does a capacitive level sensor work?

The principle of capacitive level measurement，
is based on the capacitance change of a capacitor.
The probe and the tank wall form a capacitor,
whose capacitance is dependent on the amount of product in the tank:
An empty tank has a lower, a filled tank a higher capacitance.
A simple capacitor consists of two electrode plate,
separated by a small thickness of an insulator,
such as solid,
liquid, gas, or vacuum.
This insulator is also called as dielectric.
Value of C depends on dielectric used,
area of the plate and also distance between the plates.


Where:
C = capacitance in picofarads (pF)
E = a constant known as the absolute permittivity of free space
K = relative dielectric constant of the insulating material
A = effective area of the conductors
d = distance between the conductors
This change in capacitance can be measured using AC bridge.

How does water level sensor work?

There are many types of water level sensors. Including single flange static pressure / double flange differential pressure water level sensor, float type water level sensor, magnetic water level sensor, input type water level sensor, electric inner float water level sensor, electric float level sensor, capacitive water level sensor, magnetostrictive Water level sensor, servo water level sensor, etc., ultrasonic water level sensor, radar water level sensor, etc. It can be divided into contact type and non-contact type.
Extended reading: Radar Non Contact Water Level Sensor

How does a radar level transmitter work?

In radar level measurement,
microwaves are transmitted by the antenna system of the radar sensor,
to the measured product, reflected by the product surface,
and received back by the antenna system.
The time from emission to reception of the signals is proportional to the level in the vessel.
In continuous non-contact level measurement with radar,
the sensor sends microwave signals towards the medium from above.
The surface of the medium reflects the signals back in the direction of the sensor.
Using the received microwave signals,
the sensor determines the distance to the product surface
and calculates the level from it.
Liquids and solids are commonly measured with this measuring technique.

Sino-Inst offers over 10 Ultrasonic Level Sensing sensors and transmitters for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Ultrasonic Level Sensing sensors and transmitters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Level Sensing sensors and transmitters instrumentation, located in China.

Request a Quote

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Float Level Sensors – Single and Multipoint

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Float level sensor is a kind of continuous liquid level measurement sensor. Also called float level switch, float level gauge, float level transmitter.

Float level sensors are continuous level sensors. It can display the liquid level percentage, 4~20mA current and liquid level value on the spot. Output the switching value signal to conduct liquid Bit switch control. Low-cost. Single-point or multi- point measurement and control optional.

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

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Featured Float Level Sensors & Switches

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

What is float level sensor?

Float level sensor uses magnetic float as the measuring element. Through magnetic coupling, the internal resistance of the sensor changes linearly. The smart converter converts the resistance change into a 4-20mA standard current signal. It can display the percentage of liquid level, the current of 4 ~ 20mA and the value of liquid level. Remote transmission control room can realize automatic detection, control and recording of liquid level. This instrument is suitable for petroleum, chemical, power, light industry and pharmaceutical industries, such as sewage treatment and medium level measurement in various atmospheric and pressure vessels, especially for underground tanks and tanks.

Float level sensor working principle

Float level meter is an instrument for measuring liquid level. It is widely used in the field of liquid measurement. Many industries will choose to use it for measurement equipment. Such as the petroleum, chemical, and pharmaceutical industries.

Float level sensor: Float level sensor is designed and produced based on the principle of buoyancy and static magnetic field. The position of a floating ball with a magnet (floating ball for short) in the measured medium is affected by buoyancy. The change of the liquid level causes the position of the magnetic float to change. The role of the magnet and sensor (reed switch) in the floating ball changes the number of components (such as fixed resistance) connected in series to the circuit. Thereby changing the electrical quantity of the instrument circuit system. That is, changes in the position of the magnetic float cause changes in the electrical quantity. The change of the electrical quantity is detected to reflect the liquid level in the container.

The float level sensor is installed on the top of the container through a connection flange. The float ball floats on the liquid surface according to the principle of discharging the liquid volume phase and so on. When the liquid level of the container changes, the float ball also moves up and down. The reed switch of the ball level gauge is magnetically attracted to change the position of the liquid level into an electrical signal. The actual position of the liquid is displayed digitally by the display instrument. The floating ball level gauge can achieve long-range detection and control of the liquid level.

Float level sensor advantages and disadvantages

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.

Many users are consulting float ball level timing and often confuse it with float ball level switches and float ball level controllers.
But they are not the same product, and the functions and prices differ greatly.
If they are mixed, it will cause the impression that some of them are sold abnormally and some of them are extremely low in price.
So, what are the differences between float level gauge, float level switch and float level controller?

What is a liquid level switch?

The float level switch uses magnetic force to operate. There is no mechanical connection. The operation is simple and reliable.

The magnetic float of the float level switch is used to rise or fall with the liquid level, so that the reed switch chip at the set position in the sensor detection tube is activated, and the contact open (close) conversion signal is issued.

One or more Reed tubes are installed in the sealed non-magnetic tube. Then the tube is passed through one or more hollow floating balls with ring magnets inside. The rise or fall of the liquid will move the floating balls up and down together. Thereby, the reed switch in the non-magnetic conductive tube is attracted or disconnected, thereby outputting a switching signal.

More about: 😉Liquid level float switch technology|continuous-point level

More about Float switch From Wikipedia.

Level switch working principle

The Cable Float Level Switch is with simple structure of using micro switch or proximity switch or reed switch to control the contact. And it is user friendly design for level measurement. The switches will send out ON or OFF contact signal output. The floating angle is larger than a certain degree. Then the state of the iron ball and reed switch will be changed for actuation. For wastewater and applications at different temperatures, the material of the float can be selected from plastic to stainless steel. Cable float level switch controls long distance and multi-point contact detection. Cable float level switch can be used for transparent liquid and granular liquid industries.

The Multi-Point Liquid Level Float Switch operates magnetically, without mechanical connections. And it is simple and reliable. When the floating ball switch measures the floating medium of the test medium, the float moves the main body. And at the same time, the magnet on the other end of the float will control the magnet on the switch operating lever.Set one or more reed switches in a closed metal or plastic tube. And then pass the tube through one or more, hollow and floating ring with ring magnet inside. And use the fixed ring to control the floating ball and the magnetic spring. The switch is in the relevant position, which makes the float float up and down within a certain range. The magnet in the float is used to attract the contacts of the reed switch, which generates the opening and closing action.

Frequently
Asked
Questions

Help Center

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.

Continuous liquid level sensors provide continuous liquid measurement and provide accurate liquid levels in tanks/vessels at all times.

Typical applications that require continuous liquid level sensors are. In some processes, understanding the liquid level is critical, or in some processes, high accuracy is essential. Such as process control or inventory control and management.

Examples that can be used as continuous level sensors:
Optical Level Sensor; Submersible Level Sensor; Ultrasonic Level Sensor

The float level detector is used to measure liquid levels in a tank in which a float rests on the surface of the liquid and follows the changing level of the liquid.

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

Common liquid level sensors are:
Float type liquid level sensor, magnetostrictive liquid level sensor,
Capacitive liquid level sensor, resistance liquid level sensor,
Radar level sensor, laser level sensor,
Ultrasonic liquid level sensor, pressure sensor,
Bubble level sensor, isotope level sensor,
Thermodynamic liquid level sensor
Therhere are 7 main types of level transmitters that Sino-Instroffers. Each type of transmitter works in a different way, and makes it useful for different types of processes.

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Sino-Inst offers over 10 Float Level Sensors – Single and Multipoints for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Float Level Sensors – Single and Multipoints options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Float Level Sensors – Single and Multipoint instrumentation, located in China.

Request a Quote

Magneto-strictive Hydraulic Cylinder Position Sensor

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Hydraulic Cylinder Position Sensor is Designed for use in compact hydraulic cylinders

Magnetostrictive cylinder position sensor is a compact linear displacement sensor. Sino-Inst supplies cylinder position sensors suited to hydraulic and pneumatic applications. Cylinder position sensor output signals include: analog, SSI, Canopen.

  • Designed for use in compact hydraulic cylinders;
  • Linear measurement, absolute position output;
  • Measuring range: 50mm～2500mm, customized according to customer needs
  • Humidity/dew point: 90% humidity, no frost
  • Output signal: current, voltage
  • Power supply voltage: 9-32Vdc
  • Temperature range: -40℃ ～ +105℃
  • Electrical protection: IP67
  • Pressure resistance: 35MPa (continuous)/70MPa (peak)
RFQ
More Magnetostrictive Level Measurement

Specifications of Hydraulic Cylinder Position Sensor

Input
Measurement dataLinear displacement
Measuring stroke50mm-2500mm, can be customized according to user needs
Number of measurementsOne
Output
Voltage0.5～4.5Vdc  Maximum load resistance of the controller: ≥10kΩ)
Electric current4～20mA, 20～4mA, 0～20mA, 20～0mA      (Minimum/large load 0/250 Ω)
Accuracy
Resolution±0.1mm（50～400mm） Range÷4096（＞400mm）
Nonlinearity±0.1mm（50～400mm）   0.02%（＞400mm）
Repeat accuracy±0.1mm
Update time2.0ms
Working condition
Magnetic ring speedAny
Operating temperature-40～105℃
Humidity/Dew point90% humidity, no condensation
Temperature Coefficient<30ppm/℃
Impact indexGB/T2423.5 100g (11ms)
Vibration indexGB/T2423.10 25g/10-2000HZ
Electrical protectionIP67
EMC testGB/T17626.2/3/4/6/8, grade 4/3/4/3/3, Class A, CE certification; ISO13766, ISO11452-2/4
Structure and materials
Electronic warehouseStainless steel 304
RodStainless steel 304
Magnetic ringVarious magnetic rings
Outer tube pressure350bar/700bar (peak value) when installed in the liquid cylinder
Installation
Installation directionAny direction
Installation formElectronic warehouse outer circle
Electrical connections
Outgoing wayStraight out cable or aviation plug
Input voltage9-32Vdc
Power consumption1W
Polarity protectionMaximum -30Vdc
Overpressure protection36Vdc max
Insulation resistance＞10MΩ
Dielectric strength500V

Features of Magnetostrictive Hydraulic Cylinder Position Sensor

  • Compact structure: suitable for occasions with strict requirements on the installation space of the electronic head. It has a large number of applications in construction machinery
  • Rugged and durable: fully enclosed design. Adapt to harsh environments. The highest IP68 protection level
  • Straight line measurement: absolute output. No need to return to zero. Multiple signal interfaces are optional
  • Small size and easy to use.
  • Standard signal output, maintenance-free
  • Never wear: continuous non-contact measurement
  • Strong anti-interference and anti-vibration capabilities
  • Low power consumption. Effectively reduce system heating
  • Full range adjustable: 100% adjustable zero and full range
  • High resolution: resolution up to 1um

Magnetostrictive Cylinder Position Sensor analog output method

The MH series Magnetostrictive Cylinder Position Sensor has a built-in 16-bit D/A converter. It can accurately convert the absolute position of the vernier magnetic ring into a standard 4-20mA current signal or other signals in real time. The output signal has a linear relationship with the effective range. The zero point, full scale and positive and negative directions can be set by a screwdriver 100% according to the needs of on-site use. The output standard analog signal can be directly output to the PLC control module (such as Siemens 331 module) or other instruments.

Magnetostrictive Hydraulic Cylinder Position Sensor installation dimensions

MH series Magnetostrictive Cylinder Position Sensor, all built-in compact products. The size of the electronic head is only 48mm (diameter) × 21mm (thickness). It is suitable for built-in measurement occasions that have strict requirements on the installation space of the electronic head. Compact structure and strong anti-interference ability. It can be widely used in construction machinery, walking machinery, power machinery and other occasions. And it can be replaced with the same type of linear displacement sensor abroad.

Extended reading: Hydraulic oil flow measurement solutions.

Magnetostrictive Cylinder Position Sensor installation

MH series pressure-resistant outer tube, stainless steel electronic warehouse, specially designed for the use of hydraulic systems. Built into the hydraulic cylinder. Withstand pressure up to 35MPa continuous (70MPa peak).

Installation Notes:
To install the sensor housing, M5 DIN913 grub screws are required. The sensor can only be fixed in the direction of the axis. Since the screw can only contact the housing, the maximum torque to the screw can only be 1Nm. Otherwise the sensor housing will be damaged. And you need to remove the glue (such as Loctite Blue) to apply and seal the installed fixing sleeve screws.

Installation Precautions:

  • Cut off all sensor connections during welding!
  • Do not connect the ground terminal to the piston rod or the bottom of the cylinder.
  • If there are sensors inside the cylinder block, do not weld any part of the cylinder block.
  • If there are sensors inside the cylinder, do not weld near the cylinder.
  • Any place in contact with the welding machine may generate current or voltage. This is caused by the lubrication of the isolation bearing or the sliding part of the plastic part. In this case, the same consequences may be caused.

You may like: How does a hydraulic flow meter work?

The cylinder position sensor is mainly used to detect the position of the piston in the cylinder, and the user can directly install it in the cylinder. As a detection device, the sensor is the primary link to realize automatic control and automatic detection and can meet the various requirements of users for equipment information transmission, processing, storage, recording, display, and control.

The position sensor can be used to detect the position. A switch that reflects a certain state. Unlike the displacement sensor, the position sensor has two types: a contact type and proximity type.

The contact of the contact sensor is actuated by two objects contacting and squeezing. Common ones are travel switch, two-dimensional matrix position sensor, and so on. The travel switch has a simple structure, reliable action, and low price. When an object touches the travel switch during its movement, its internal contacts will act to complete the control. If travel switches are installed at both ends of the X, Y, and Z-axis of the machining center, the movement can be controlled. range. The two-dimensional matrix position sensor is installed on the inner side of the manipulator’s palm to detect the contact position between itself and an object.

A proximity switch refers to a switch that can send out an “action” signal when an object is close to a set distance, and it does not need to be in direct contact with the object. There are many types of proximity switches, mainly electromagnetic type, photoelectric type, differential transformer type, eddy current type, capacitive type, reed switch, Hall type, etc. The application of proximity switches on CNC machine tools is mainly tool holder selection control, worktable stroke control, oil cylinder and cylinder piston stroke control, etc.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Rated Products:

LD series Rigid Probe Magnetostrictive Level Transmitter
LR series Integral flange Magnetostrictive level sensor
LT series Digital Display Magnetostrictive liquid level sensor
LP series Magnetostrictive Tank Level Indicator-PVDF/ PPH/ PTFE/ PFA/ PP

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FAQ

What is hydrostatic level transmitter?

Hydrostatic level transmitter is actually a type of pressure transmitter. Hydrostatic level transmitter is the application of pressure transmitter to liquid level measurement. The submersible Hydostatic pressure level transmitter is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. Piezoresistive effect using diffused silicon or ceramic sensitive elements. Convert static pressure into electrical signal. After temperature compensation and linear correction. Convert to 4-20mADC standard current signal output. In order to achieve liquid level measurement.

What is magnetostrictive transducer?

Magnetostrictive liquid level transmitter is a kind of liquid level sensor. But it uses the principle of magnetostrictive operation internally. And combines modern electronic technology to measure the time value between pulse waves to achieve the purpose of accurately measuring the liquid level . The magnetostrictive liquid level meter works with waveguide pulses. During the work, the measured displacement is determined by measuring the time of the start pulse and the end pulse, so the measurement accuracy is high.

How do you measure pressure using a level transmitter?

Usually we measure the liquid level by measuring the pressure.
When the liquid level transmitter is put into a certain depth in the measured liquid, the pressure formula of the sensor facing the liquid surface is: Ρ = ρ.g.H + Po. In the formula:
P: the pressure on the liquid face of the transmitter
Ρ: measured liquid density
G: local gravity acceleration
Po: atmospheric pressure on the liquid surface
H: Depth of transmitter into liquid
At the same time, the pressure of the liquid is introduced into the positive pressure chamber of the sensor through the air-conducting stainless steel. Then connect the atmospheric pressure Po on the liquid surface to the negative pressure chamber of the sensor. To offset Po on the back of the sensor, the pressure measured by the sensor is: ρ.g.H. Obviously, by measuring the pressure P, the liquid level depth can be obtained.
Of course, if the liquid level is measured, the pressure value can also be converted.

Read more about: Common Types Of Heating Oil Tank Level Sensors

Sino-Inst offers over 10 Magnetostrictive Hydraulic Cylinder Position Sensors for measurement.

About 50% of these are liquid level meters, 40% is the tank level sensor. A wide variety of level meters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Magnetostrictive Hydraulic Cylinder Position Sensor, located in China.

Hydraulic Cylinder Position Sensor products are most popular in North America, Domestic Market, and South America. You can ensure product safety by selecting from certified suppliers, with ISO9001, and ISO14001 certification.

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Magnetostrictive Level Transmitters

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

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

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

CONTACT US
More Level Sensors

Featured Magnetostrictive Level Transmitters

Features of Magnetostrictive Level Transmitters

Magnetostrictive Level Transmitters are divided into three types: flexible probe type, hard probe type, and outer float isolation detection. The watch body contains two main parts: the electronic part and the sensing part. The advantages of Magnetostrictive Level Transmitters are:

  1. Strong reliability:
    Because the magnetostrictive liquid level gauge adopts the principle of waveguide, there is no mechanical movable part. Therefore, there is no friction and no wear. The entire converter is enclosed in a stainless steel tube and is not in contact with the measurement medium. The sensor works reliably and has a long life.
  2. High precision:
    Because the magnetostrictive liquid level gauge works with waveguide pulses. In the work, the measured displacement is determined by measuring the time of the start pulse and the end pulse. Therefore, the measurement accuracy is high and the resolution is better than 0.01%FS. The accuracy achieved.
  3. Good security:
    Magnetostrictive liquid level gauge has high explosion-proof performance. Intrinsically safe explosion-proof and safe to use. Especially suitable for the measurement of chemical raw materials and flammable liquids There is no need to open the tank lid during the measurement. Avoid the unsafeness of manual measurement.
  4. Easy to install and maintain:
    The magnetostrictive liquid level gauge is generally installed through the existing pipe opening on the top of the tank. It is especially suitable for the installation of underground storage tanks and storage tanks that have been put into operation. It can not affect normal production during the installation process.
  5. Facilitate system automation:
    The secondary instrument of the magnetostrictive liquid level gauge adopts the standard output signal. It is convenient for the computer to process the signal. It is easy to realize the network work and improve the automation degree of the entire measurement system.

Sensing part (ie probe rod):

The probe has a diameter of 5/8” and the end is sealed. The inside of the probe is hollow and equipped with precision magnetostrictive wires. In addition to the magnetostrictive wires, the probe can also hold up to 8 RTD The sensor is used to detect the temperature. The maximum length of the probe can be 23 meters, and the flexible cable structure is used above 6 meters.

Electronic part (ie controller):

The shell is made of aluminum alloy or 304 stainless steel. It is a double-chamber type (that is, the transmission part is separated from the wiring part). One of the chambers is a micro-processing module and a circuit board, and the micro-processing module has operation buttons. The other chamber is a binding post. There is a wire connected between the circuit board and the probe processing board. This wire should not be loosened without authorization from the manufacturer.

magnetostrictive level transmitter working principle

The magnetostrictive liquid level/boundary transmitter is designed using a physical phenomenon – the principle of magnetostriction. The specific working principle is as follows:

A fine magnetostrictive wire is installed in a non-magnetic sensing tube. A piezoelectric sensor is connected to one end of the magnetostrictive wire. The piezoelectric sensor sends 10 current pulse signals to the magnetostrictive wire every second. and time it.

The current pulse travels down the magnetostrictive wire. A circular magnetic field is generated that moves downward.

Magnetostrictive Level Sensor Operating Principle

The annular magnetic field interacts with the magnetic field of the magnetic float. A torsional stress wave is generated on the magnetostrictive line. This torsional stress wave travels from the float position up and down the magnetostrictive line at a known speed. Knowing The piezoelectric magnetic sensor receives this torsional stress wave signal.

The time interval between the initial current pulse wave and the return torsional stress wave can be known through the timing circuit. The position of the float can be determined according to the time interval. Since the float always floats on the liquid surface, the liquid level can be accurately determined s position.

Applicaitons of Magnetostrictive Level Transmitters

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

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

magnetostrictive level transmitter advantages and disadvantages

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

Magnetostrictive level transmitter advantages:

  1. The magnetostrictive liquid level gauge is suitable for liquid level measurement of clean liquid level with high precision requirements. The precision reaches 1mm, and the product precision can reach 0.1mm.
  2. It can be used to measure the interface between two different liquids.
  3. The biggest advantage of magnetostriction lies in its extremely high resolution, which can be at the micron level. A typical application is to measure the position of a rolling mill load hydraulic cylinder. But the design here is not the same as level measurement. The position measurement of the hydraulic cylinder is not that the hydraulic oil drives the magnetic ring (ie, the floating ball). Instead, the movable part of the cylinder body drives the magnetic ring to move through the mechanical structure, so the position is very clear. Usually, the precision requirements of the rolling mill for the thickness of the sheet are usually several to tens of microns. Therefore, the resolution of the magnetostrictive sensor must reach the micron level.
  4. The explosion-proof intelligent electronic circuit design can calculate the volume
  5. The movable part of the magnetostrictive liquid level gauge is a float, and the maintenance is extremely low. It is used in liquid level measurement of various storage tanks and has the characteristics of strong environmental adaptability and convenient installation.

Compared with liquid level gauges such as radar, it has a very high cost performance and many functions in short-range measurement. The display screen has current, temperature and interface display. This is exactly why the magnetostrictive level gauge can become one of the most common products used on metering tanks such as gas stations today.

Disadvantages of magnetostrictive level transmitter:

  1. The anti-interference ability is slightly poor (generally it is not recommended to be used in places with strong electromagnetic radiation such as power plants).
  2. It must be a contact measurement, but the real measurement unit is not in contact with the liquid, and only its protection tube is in contact with the liquid.
  3. The medium is in direct contact, and the floating ball sealing requirements are strict, and the viscous medium cannot be measured.
  4. Installation is limited. Higher installation and maintenance requirements, so the market is not widely used.

Extended reading: How To Select Hydraulic Flow Meter?

Magnetostrictive level transmitter price

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

Selection considerations: 

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

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

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

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

More Level Senors for Tank Level Measurement

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

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

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

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

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

Frequently
Asked
Questions

Help Center

Magnetostrictive liquid level transmitter is a kind of liquid level sensor. But it uses the principle of magnetostrictive operation internally. And combines modern electronic technology to measure the time value between pulse waves to achieve the purpose of accurately measuring the liquid level . The magnetostrictive liquid level meter works with waveguide pulses. During the work, the measured displacement is determined by measuring the time of the start pulse and the end pulse, so the measurement accuracy is high.

1.The device electronics generates a low energy current pulse at fixed intervals.
2.The electrical pulses create a magnetic field which travels down a specialized wire inside the sensor tube.
3.The interaction of the magnetic field around the wire and the magnetic float causes a torsional stress wave to be induced in the wire. This torsion propagates along the wire at a known velocity, from the position of the magnetic float and toward both ends of the wire.
4.A patented sensing element placed in the transmitter assembly converts the received mechanical torsion into an electrical return pulse.
5.The microprocessor-based electronics measures the elapsed time between the start and return pulses (Time of Flight). And converts it into a position measure-ment which is proportional to the level of the float.

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

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

Magnetostrictive probe technology provides underground storage tank and above ground storage tank owners a highly accurate device to measure and transmit water height, fluid height and temperature to a monitoring device. In addition, Veeder-Root probes support in-tank leak detection to assist in compliance management.

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Sino-Instrument offers over 10 Magnetostrictive level transmitters for level measurement. About 50% of these are Magnetostrictive liquid level meters, 40% is the tank level sensor.

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

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

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LP series Magnetostrictive Tank Level Indicator

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Tank Level Indicator is important for liquid level monitoring of industrial storage tanks. Magnetostrictive Tank Level Indicator is suitable for corrosive liquids. PVDF/ PPH/ PTFE/ PFA/ PP are optional.

Tank Level Indicator is based on the basic model of magnetostrictive level sensor, using corrosion-resistant materials. The shell structural parts are all made of anticorrosive materials such as PVDF/PPH. It is widely used in the media conditions of strong acid and alkali such as petrochemical industry and new energy. For fuel oil tank, explosion proof is optional.

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

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More Magnetostrictive Level Measurement

Featured Tank Level Indicators

Rigid Probe Magnetostrictive Level Transmitter
Integral flange Magnetostrictive level sensor
Digital Display Magnetostrictive liquid level sensor
Multi-Point Liquid Level Float Switch
Magnetic Float Level Sensor-Reed Switch
Portable Ultrasonic Liquid Level Indicator
Hydrostatic level transmitter-Rod Type
Differential pressure(DP) level transmitter

Features of Magnetostrictive Tank Level Indicator

  • The shell is made of Teflon (Teflon) and other materials, resistant to strong acids and bases. Suitable for super corrosive environment.
  • The effective stroke is 0～20000mm, and the range can be customized.
  • There are voltage, current, analog/485 digital/can bus, and various signal output options.
  • Built-in imported waveguide wire as the measuring unit. After DSP digital signal processing. High precision, no temperature drift, no contact. Life span up to 20 years;
  • Strong adaptability to temperature environment; the pole can withstand high temperature 300C°.
  • Pressure resistance and corrosion resistance, float pressure 1.5MPa. It can be applied to most corrosive liquid level measurement applications such as strong acids and bases.
  • Protection grade IP68
  • Strong anti-interference ability
  • High precision
  • Low power consumption and high cost performance;
  • Easy to disassemble and install;
  • Non-contact measurement, high stability.
  • The absolute value displacement measurement is not affected by power failure;
  • Can replace LVDT, electronic ruler, encoder and other displacement sensors.

Specifications of Magnetostrictive Tank Level Indicator

Range (mm)50～2000mm or customized according to customer needs
Power supply voltage: +11VDC~+36VDC
Output form/working voltage: Analog signal: 4~20mADC, 0~5VDC, 1~5VDC, 0~10VDC (+15VDC~+36VDC) Digital signal: RS485
Load capacity: Voltage signal output load ≥1KΩ. Current signal output load ≤1KΩ
Non-linear error: ±0.05%FS; maximum error 100μm below 200mm
Repeatability error: better than 0.005%FS
Resolution: better than 0.005%FS
Hysteresis: better than 0.002%FS
Working temperature: 0~+70℃ -15~+60℃ -25~+70℃ -40~+85℃
Rod material: 0Cr18Ni9 (304) 316 stainless steel (special customization)
Electronic enclosure shell material: 0Cr18Ni9 (304) 316 stainless steel (special customization)
Lead way: PVC shielded cable. Default length: 1m, also available according to user requirements. Aviation plug (not applicable to explosion-proof products) terminal
Enclosure protection level: IP68

Tank level indicator float type

Float level sensor (float switch) is one type continuous level sensor for industrial level measurement. Float level sensor has a magnetic float that rises and falls as liquid level changes. The movement of the float creates a magnetic field. Through the magnetic coupling effect, the internal resistance of the sensor changes linearly. The resistance change is converted into a standard current signal of 4 ~ 20mA by an intelligent converter. The percentage of the liquid level, 4 ~ 20mA current and liquid level value, can be displayed on site. Applications like: water tank, fuel tank, level measurement and level control. Vertical, horizontal, and side mounted, all can be satisfied

Extended reading: Industrial Tank level indicators and Tank Level Gauges.

Large water tank level indicator

The water level sensor of your water tank is an essential component. If not repaired or replaced, a sensor can become damaged over time and fail entirely. Too much water can cause a malfunction and too little water means inadequate water pressure. Either way, repairing or replacing holding tanks is an expensive task you shouldn’t have to undertake because of sub-par sensors.
With Sino-Inst’s water tank level sensors, there’s nothing to break down or rust and our models have a 99% success rate!

In the high unlikely event that you experience any issues with your product, call us and we’ll replace or repair it immediately at no charge.

Read more about our water tank level sensors and control systems.

About Level Sensor Types and how they work, OMEGA Engineering has a good explanation. Video source: https://www.youtube.com/watch?v=bHxEXlIHSHY&feature=emb_logo

Propane tank level indicator

Propane, three-carbon alkane, chemical formula is C3H8, structural formula is CH3CH2CH3. Colorless, liquefied gas is slightly soluble in water, soluble in ethanol and ether Mixed with air to form explosive mixture. Exist in natural gas and petroleum pyrolysis gas. The chemical properties are stable, and chemical reactions are not easy to occur. Used as refrigerant, internal combustion engine fuel or organic synthetic raw materials.

A propane gauge shouldn’t be hard to pick, and it shouldn’t cost a lot of money. We know that, so we’re going to show you how to pick the best propane tank gauges.

See if there is stirring in the tank. If there is a mixer, then add a measuring tube on the side of the tank. Generally, the magnetic flap level gauge, float level gauge or magnetostrictive level gauge are commonly used.

It also depends on your working conditions, such as temperature and pressure to measure the density of the medium, and whether your spherical tank is supported.

The external measuring liquid level gauge is also called an externally attached ultrasonic liquid level gauge. Its working principle is ultrasonic echo ranging. That is, the ultrasonic wave is transmitted through the tank wall in the liquid medium and returned to the liquid level to be received by the sensor. Through its time difference To calculate the liquid level height, on-site OLED display.

At the same time realize the remote transmission of the monitoring liquid level and realize automatic control. Also suitable for liquid level measurement of liquefied gas, propylene, propane, ethane spherical tank.

💡 Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement

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FAQ

What is magnetostrictive level transmitter?

Magnetostriction means that the change of the magnetization direction in ferromagnetic substance will cause the change of the medium lattice spacing. As a result, the length and volume of the ferromagnetic substance change.
Magnetostrictive level transmitter is a level transmitter based on the principle of magnetostriction. It is a high-precision, high-resolution transmitter driven by a magnetic float.

How does a magnetostrictive sensor work?

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

What is flow and level sensor?

1. Flow sensor is a kind of detection instrument used to detect the flow parameters of liquid, gas and other media and convert it to other forms of signals for output. The flow sensor has many advantages such as small size, light weight, intuitive and clear reading, high reliability, and no pressure loss.
1. Level sensor is a sensor that can replace manual measurement. The liquid level sensor can convert the height of the liquid level into an electrical signal for output, so as to achieve the purpose of controlling the liquid level.

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

Sino-Inst offers over 10 Tank Level Indicators for level measurement.

About 50% of these are Magnetostrictive liquid level sensors, 40% is the tank level sensor. A wide variety of level meters options are available to you, such as free samples, paid samples.

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

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

Request a Quote

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Wireless Pressure Sensors

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Wireless pressure sensors are a game changer for many industries. No longer do you have to worry about wiring costs or maintenance. Our wireless battery powered pressure monitoring system offers long range connectivity via Bluetooth, or GPRS-NB-iot-LORA. It allows you to keep an eye on water pressure and offers differential pressure monitoring. With the help of our wireless pressure sensors, you’ll be able to keep a close eye on your operations without the need for a controller or indicator.

Sino-Inst offers a variety of Wireless Pressure Sensors for industrial pressure measurement. If you have any questions, please contact our sales engineers.

CONTACT US
More Pressure Sensors

Featured Wireless Pressure Sensors

SI2088-W Wireless Pressure Transmitter
SI-1110 Wireless Pressure Transducer

Features of Wireless Pressure Sensors

  • Ultra-low power consumption design. 60UA in sleep mode (3.6VDC battery power supply)
  • NB-iot Narrowband Internet of Things. Supporting our company’s Internet of Things cloud acquisition and monitoring platform.
  • Online monitoring. PC and mobile data applications. Real-time/historical/alarm data query.
  • On-site low-power five-digit display header. Continuous display and trigger display can be divided (optional)
  • Remote configuration: Remote configuration of parameters such as acquisition frequency/sending frequency/upper and lower alarm limits.
  • Data communication protocol MODBUS TCP. .
  • Dual power supply. The battery is powered by 3.6VDC/7.2 VDC lithium sub-battery. The battery life depends on the frequency cycle of the collected data. Generally it can be used for about 2-5 years. External power supply 5-30VDC.
  • High-precision 24-bit ADC collects and digitizes sensor signals.
  • Enhanced EMC anti-interference design. It is suitable for various industrial environments with harsh electromagnetic environment.
  • Abnormal alarm: abnormal alarm of overvoltage and undervoltage/low battery in the pipeline network
  • 24hX365 online monitoring. The data server records data for several years.
  • Open cloud platform API interface/MODBUS-TCP interface. Seamlessly connect with user’s industrial configuration system, customized software and special platform.
  • The installation location of NB-iot IoT products must have NB-iot base station signal. Special IoT card. Low cost and low traffic, annual use.

Low power-battery powered

The low-power wireless pressure transmitter adopts advanced micro-power devices and perfect software management technology. Ensure the real-time performance of data monitoring and instrument status. Built-in large-capacity high-performance lithium battery, which can work continuously for 2-5 years.

Realize remote real-time monitoring, wireless transmission, no need for on-site wiring, saving manpower and construction costs.

The instrument is advanced in design, easy to install and use, and is an ideal upgrade product for traditional pressure transmitters.

Application of wireless pressure sensor

Wireless pressure sensors are mainly used in the following four aspects:

  1. In the power industry. Wireless pressure sensors can be used in data transmission fields such as reactive power compensation, power distribution monitoring, meter collection, and street lamp monitoring.
  2. In the water application industry. Water meter collection, remote monitoring of water resources management, wireless communication of waterway network monitoring.
  3. In the field of environmental protection. Online monitoring system of pollution sources such as CEMS, water quality online monitoring, etc.
  4. In the field of equipment maintenance. Such as elevator monitoring, air conditioning monitoring, etc.. Pressure sensors can be quickly embedded in the user’s monitoring instruments to complete the device monitoring GPRS remote transmission application.

Read more about: What is industrial pressure transmitter?

NB-IoT Wireless Pressure Transmitter Networking Solution

Petroleum pipelines have the characteristics of large diameter, high pressure and large transmission volume. In the process of oil and gas transportation, the pressure transmitter is used to effectively monitor the pressure of the oil pipeline. Further prevent the occurrence of oil and gas pipeline leakage accidents and ensure the safe operation of oil and gas pipelines.

Industry pain points:

  1. The energy transmission pipeline covers a wide area, and the pressure monitoring system based on the wired network is costly and difficult to deploy;
  2. The pressure transmitter is often placed under the ground along with the pipeline. Once installed, it is not easy to replace. A low-power wireless networking solution is required to extend battery life.

NB-IoT wireless pressure transmitter integrates pressure detection, data acquisition, NB-IoT wireless communication, battery self-power supply and other functions. Realize high-precision measurement, automatically set the collection frequency and reporting frequency. Use NB-IoT network to upload data.

Background staff can set alert values for pressure data. Once the warning value is reached, measures to automatically close the valve can be taken immediately. Send work orders to maintenance personnel for quick processing.

The NB-IoT network covers a wide range. Under the same frequency band, NB-IoT has a gain of 20dB compared with the existing network, which is equivalent to improving the coverage area by 100 times. At the same time, it meets the coverage depth of the underground pipe network to ensure that there are no blind spots in the network;

NB-IoT can support massive IoT terminal connections. Supports low latency sensitivity and ultra-low device power consumption. Terminal standby time can reach more than 10 years;

The wireless pressure transmitter can collect, display, measure, report and store metering data in real time. Synchronously upload to the management platform. Ensure that the background personnel can monitor the pipeline status in real time.

Wireless Level Sensor – LoRa

The Wireless Level Sensor upgrades the LoRa wireless transmission function based on the Hydrostatic Level transmitter. Measure water or oil level. This product adopts the LORA debugging method, which can greatly increase the communication distance. It can be widely used in the field of short-distance Internet of Things wireless communication in various occasions.

Read More about: Wireless Level Sensor – LoRa

Wireless pressure sensor system

The rapid development of wireless communication technology and computer technology has been applied to sensor technology. It makes wireless data collection of pressure sensors possible. Its unique performance is more advantageous than traditional pressure sensors. It can be used in areas where wiring and power supply are difficult, areas where people cannot reach. Such as high temperature, severe cold, high humidity areas, contaminated areas or areas where the environment is destroyed. And some temporary occasions. Realized the sensing system Remote testing. This is also an inevitable trend of testing in the information age.

System design

The pressure sensor wireless acquisition system designed in this paper is composed of the front-end sensor data acquisition transmitter part and the terminal data receiver part. Figure 1 shows the block diagram of the transmitter part (upper) and the receiver part (lower) of the sensor data collection.

The sensor data acquisition and transmission part is composed of a pressure sensor, a temperature sensor, a signal processing part, a microprocessor (generally a microcontroller) and a wireless transmission circuit.

Pressure and temperature sensors acquire pressure and temperature values ​​of the surrounding environment.

The signal processing part includes the preceding channel, program-controlled amplifier and A/D converter. Its function is to extract and amplify the analog signal of the sensor under program control and perform analog/digital conversion.

The microprocessor is responsible for controlling the work of each part of the system and processing digital signals. The wireless transmission circuit is under the control of the microprocessor. The encoder encodes and processes the collected information data and transmits it with the transmission module.

The data receiving part is composed of wireless receiving circuit, microprocessor and display part.

Receive data from radio under the control of a microprocessor. After receiving a set of format data, the decoder in the receiving circuit decodes the format data. The current pressure information of the environment is obtained. Then the pressure information is displayed on the LED receiving panel.

Extended Reading: How does a MEMS pressure sensor work?

Pressure transducers for sale

Hygienic / Sanitary Pressure Transmitter
Also called Hygienic pressure Transmitters, or tri clamp pressure transmitter. Sanitary pressure Transmitters is used to food &beverage or pharmaceutical application.
High-Temperature Pressure Transmitter
High-temperature pressure transmitters with a 4-20mA output.
which has a temperature capability of over 850 °C and is not pyroelectric.
Absolute Pressure Transmitter
Absolute pressure transmitter with 4-20mA output for measuring pressure with absolute type reference. Absolute pressure (AP) transmitter is a measure of the ideal (complete) vacuum pressure.
Hydrostatic pressure transmitter
Hydrostatic pressure transmitter is used for fluid hydrostatic pressure measurement. With working static pressure up to 32Mpa, for liquid, gas or steam .
SI-520 Digital Pressure Sensor
Digital Pressure Sensor is particularly suitable for use in computer control systems. RS485 half-duplex working mode.
SI-302 OEM pressure sensor
OEM pressure sensors from Chinese manufacturer. Silicone filled. Protected by stainless steel diaphragm. Suitable for a variety of fluid media.
SI-703 Flush diaphragm pressure sensor
Flush membrane / diaphragm structure, anti-blocking design. Pressure measurement of viscous media.
SI-10 Liquid pressure sensor
Liquid pressure sensor is widely used for pressure measurement of various liquids. Like water or oils. IP68 waterproof.
SI-512H High Temperature Pressure Sensor
High Temperature Pressure Sensor for pressure measurement of high temperature gas or liquid. Such as steam pressure. High temperature up to 800 ℃.
SIJC-1000HSM-Silicon Pressure Sensor
Silicon pressure sensor, also known as Diffused silicon pressure sensor. Silicon pressure sensors are low cost.
SI-706 Combined Pressure and Temperature Sensor-Dual function
Combined pressure and temperature sensor for Simultaneous measurement of pressure and temperature.
Thermocouple types: J, K, E type or PT100 platinum resistance. Two outputs do not affect each other. 
SI-338 Ceramic Pressure Sensor
Ceramic pressure sensor is a pressure sensor refined from a thick ceramic base using a refined ceramic base. Cost-effective. Support OEM processing. 0-0.2MPa -…- 40MPa

More Applications and Markets of Wireless Pressure Sensors

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What Is Static Water Pressure? Definition of Static Water Pressure: Static Water Pressure refers to the pressure on water when…

Water Pressure Transducers

Water pressure transducers also called a water pressure sensor, are pressure transmitters that can measure water pipe pressure. For the…

Wireless pressure sensor manufacturer

In conclusion, wireless pressure sensors have revolutionized the way industries monitor pressure measurement. The wireless battery powered pressure monitoring system has eliminated wiring costs, improved safety, and reduced maintenance costs.

Our wireless pressure transmitters offer additional features and benefits when compared to traditional pressure transmitters. If you’re interested in learning more about our wireless pressure transmitters, contact us today.

Sino-Inst, as the manufacturer of wireless pressure sensors, offer you with the best price.

Sino-Inst offers 10 wireless pressure sensors products. These are wireless pressure sensors, wireless differential pressure transmitter, and wireless temperature transmitter.

A wide variety of wireless pressure sensors options are available to you, such as free samples, paid samples. Sino-Inst is wireless pressure transmitter manufacturer, located in China.

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

Request a Quote

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