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Pressure transducers: what they are and what they are for

It is an electronic device, a sensor, capable of detecting and converting a physical input variable (pressure, temperature, brightness …) into an analog output electrical signal (current or voltage) in order to be able to:

  • to measure
  • compare with a measure of the same nature
  • elaborate (amplify, translate, …)
  • acquire through a data processing system and / or transport remotely through a data communication system in order to be stored and / or displayed
  • use in a control system

How many types of transducers are there?

There are primary transducers (of temperature, brightness, position, magnetic field…) and secondary transducers (of force, acceleration, pressure …). We at CELMI are a point of reference in the production of pressure transducers used in many flow control and monitoring applications in compressors, cars, air conditioning systems etc.

How does a pressure transducer work and what is it for?

The pressure transducer, also called sensor, is able to measure a quantity or form of energy such as weight, level, force, speed, etc. and transform it at the output into another physical quantity such as an electrical signal, force displacement… In this case, the measurement of the input pressure is converted into an electrical output signal . This is why the pressure transducer is mainly used in the food industry , in air systems, in work machines, in the measurement of medical gases , or in the automotive sector .

The importance of pressure transducer calibration

Each sensor is subject to measurement errors. These structural uncertainties are simply the algebraic difference between the value indicated by the sensor output versus the actual value of the measured variable, or known reference pressures.

In order to prevent measurement errors, the calibration process is used: pressure transducers are often installed in harsh operating environments which cause their performance to change over time. To avoid failures and keep the operating level within expected and acceptable limits, periodic maintenance and above all calibration operations are necessary.

To deepen the subject and better understand what is the difference between a pressure transducer and a sensor , we recommend that you read the dedicated article in our blog. 

Visit the section dedicated to pressure transducers and sensors on our website to discover the full range and technical data sheets of each product. Or contact us to speak to one of our subject matter experts.