What is a Pressure Transducer?

A pressure transducer is an apparatus for measuring pressure, also identified as a pressure sensor or pressure transmitter. It converts physical pressure parameters like gas and liquid collected by the cell element into an established electrical signal ( like 4~20mADC, etc.).

MicroSensor is a globally-renowned pressure transducer manufacturer with over five decades of history, providing pressure transducers for gauge pressure, absolute pressure, and sealed gauge pressure. Moreover, it has different ranges and different materials optional for custom design. From general working conditions to extreme working conditions, low temperature to high-temperature environments, the pressure transducers can work stably in the long term. For industrial companies, getting the appropriate high-quality industrial transducers can be challenging. Learn more about Microsensor's pressure transducers and select the right ones for your industry.

Pressure Transducers

Differential Pressure Transducers

Submersible Pressure / Level Transducers

Pressure Transducers

Through the pressure measurement of fluid media (including gas, steam, or liquid), the pressure transmitters provide real-time data for industrial manufacturing to enable the automatic control of the production process. Gauge pressure transducers quantify the pressure based on local atmospheric pressure. On the other hand, absolute pressure transducers evaluate the pressure in proportion to a perfect vacuum. Differential pressure transducers quantify the pressure based on the difference between two applied pressures. Pressure transducers from MicroSensor have a wealth of optional product specifications. The most popular options are explosion-proof pressure transducers, special pressure transducers for the process industry, sanitary pressure transducers, anti-corrosion pressure transmitters, and so on.

ATEX Pressure Transmitter

ATEX Pressure Transmitter


General / Flush Diaphragm
CE, RoHS, ATEX approved

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Pressure Transmitter Suitable For General Industry

Pressure Transmitter Suitable For General Industry


Range: 0~250mbar to 0~250bar

Accuracy:±0.25%FS, ±0.5%FS
Output: 4mA~20mA DC, 0/1V~5/10V DC, 0.5V~4.5V DC

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Digital RS485 HART Pressure Transmitter

Digital RS485 HART Pressure Transmitter


Accuracy: ±0.15%FS (Typ.)
RS485/HART Protocol

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Differential Pressure Transducers

The distinction between a differential type and a general pressure transducer is that the former has two pressure ports. The differential pressure transducer is commonly divided into a negative pressure end and a positive pressure end.
Principally, the pressure at the negative pressure end of the differential pressure transducer should be lower than the pressure at the positive pressure end so that the differential pressure can be sensed and appropriately measured. Differential pressure transducers are typically utilized to gauge the differential pressure of gases and liquids and provide monitoring data for the production process. A good differential pressure transmitter should offer simple integration possibilities and automatic zero-point adjustment.

Differential Pressure Transmitter

Differential Pressure Transmitter


Accuracy: ±0.5%FS
4~20mA DC 0/1~5V DC 0~10/20mA DC

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Differential Pressure Transducer

Differential Pressure Transducer


Accuracy: ±0.5%FS
Oxygen Measurement Optional

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Differential Pressure Transmitter

Differential Pressure Transmitter


Output: mV
Accuracy: 0.25%FS
Max. static pressure 20MPa

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Differential Pressure Transmitter

Differential Pressure Transmitter


0~0.01bar / 0~0.025bar / 0~0.07bar
Accuracy: ≤1%FS
Output: 4~20mADC(2-wire)

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Submersible Pressure / Level Transducers

Submersible pressure transducers are ideal for measuring liquid levels. By installing the liquid level apparatus at the bottom of the liquid and detecting the pressure value of the liquid, the liquid level value relating to the measured liquid can be determined. Submersible pressure transducers are primarily used to monitor pool or water tank liquid levels and crude or fuel oil storage tank liquid levels. Even in challenging applications such as chemical plants and waste treatment plants, these devices can function with the greatest process reliability. A high degree of accuracy is employed when converting the measuring cell's pressure signal into a scaled industrial signal. Submersible pressure sensors stand out from conventional pressure sensors due to their integrated overvoltage protection. The feature offers protection against nearby lightning strikes.

Submersible Level Transmitter for Fuel and Chemicals Measurement

Submersible Level Transmitter for Fuel and Chemicals Measurement

[MPM426W Series]

Fully welded structure, FFKM sealing ring and various cables like PUR, PFA optional
Output mode: 4mA~20mA, 1V~5V, 0.5V~4.5V...RS485-Modbus, etc.
Magnetic end cap for mobile tanks measurement and NPT1/4 male thread connection for side mounting of tank bottom
Low power consumption

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Intelligent Level Transmitter

Intelligent Level Transmitter


3.5, 7, 10, 20, 35, 70, 100, 200mH2O
Accuracy: ±0.1%FS (Typ.)
HART Protocol

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Submersible Level Transmitter

Submersible Level Transmitter


0m~1m…200m H2O
Accuracy: ±0.5%FS

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What Does A Pressure Transducer Do?

Pressure transducers generally convert the pressure exerted by an external force or fluid into an electrical output signal that sends to the controller unit for interpretation. In smart cities and industrial production, pressure transducers are quite essential, which is why they are widely used.

Monitoring liquid and gas pressure through pressure transducers and pressure transmitters can provide data for industrial production automation and ensure more convenient and safer use of water, oil, and gas in smart cities.

What Media Can the Pressure Transducer Measure?

The pressure transducer is selected according to the different measurement media, which can be divided into dry gas, gas-liquid, strong corrosive liquid, viscous liquid, high-temperature gas-liquid, etc. Correct selection according to different media will help extend the transmitter service life.

Depending on the medium, there are usually different names:

• Gas pressure transducer

Water pressure transducer

• Hydraulic pressure transducer

• Oil pressure transducer

•  Fuel pressure transducer

What Are The Commonly Used Units for Pressure Transducers to Measure Pressure?

Commonly used units are MPa,kPa, bar, psi, kilo, etc.

1MPa=1000kPa=10bar=10kilo ≈145psi

MPa is frequently utilized for higher range pressure thanks to its larger value. One bar is equal to the earth's atmospheric pressure at sea level, about 14.6 PSI.

What Are The Output Signals of The Pressure Transducer?

Usually, the pressure transducer is powered by a DC power supply and provides a variety of output signal options, including 4 ~ 20mA. DC;, 0~5V. DC, 1~5V. DC, 0~10mA. DC, etc., can have 232 or 485 digital outputs.

Advances in microprocessors and electronics have led to industrial pressure transducers becoming smarter. Smart sensors are now available with a "fault condition" factory setting. The transducers can be programmed to send output above or below its measurement limits to the controller to indicate there is an issue.

How Do Diffused Silicon Pressure Transducers Work?

The measured medium transmits the pressure to the diaphragm at the front end of the pressure transducer, causing the diaphragm to deform after being pressed, and then transmit the pressure step by step to the pressure measuring chip. Different pressures will cause different degrees of deformation of the chip. Due to the piezoresistive effect, the resistance value output by the pressure transducer will change. The electronic circuit is used to detect this change and convert and output a standard measurement signal corresponding to this pressure.

How Is a Pressure Transducer Installed?

The pressure transducer is usually installed with thread on the pipeline and storage tank to be measured. The signal can be read through the Hirschmann interface, plug interface, or direct wiring, and wireless remote transmission signals are optional.

There are options for direct wiring as well as wireless remote transmission signals. The pipe's orientation and the pressure media (steam, liquid, or gas) will determine the method of installation of the pressure transducer along with its positioning. Make sure you enlist a professional with hands-on experience to handle your pressure transducer installation. 

What Are the Types Of Pressure Transducers?

Pressure transducers are usually divided into three types: absolute pressure, gauge pressure, and sealed gauge pressure. According to the measurement purpose, it can be divided into general pressure transducer and differential pressure transducer.

Pressure transducers can also be classified based on measurement technology into strain gauge pressure transducers and capacitance pressure transducers. There are also potentiometric pressure transducers, resonant wire pressure transducers, piezoelectric pressure transducers, and inductive pressure transducers. 

How to Select Pressure Transducers?

Pressure transmitters now support wireless technologies, making them applicable to critical operations that were impossible before. The devices are now utilized as pressure sensors in pharmaceutical industries, engine test setups, mining industries, and for preventative maintenance in high-flow fluid lines. 

When selecting a pressure transducer, the following parameters need to be confirmed:

•  The medium to be measured and the temperature of the medium

•  Measuring range

•  Accuracy

•  Pressure ports

•  Output signal

•  Working environment temperature, etc.

What Certifications Does MicroSensor Pressure Transducer Have?

MicroSensor's pressure transducer has obtained more than 223 product certifications, including ATEX explosion-proof, CB, CE, DNV certifications, SIL, UL, ship-use CCS, 3A, IECEX, CSA, RoHS, etc.



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Baoji, 721006,Shaanxi,P.R.China

German Subsidiary
Micro Sensor GmbH
Girardetstr. 6, D-45131 Essen, Germany

Tel: +86-29-88346384
Whatsapp: 15114817352
Email: sales@microsensor.cn