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Pressure Sensors, Transducers

Pressure sensors, commonly known as transducers, are devices used to measure pressure with respect to one or more compartments. They are widely used in the electromechanical industry, automotive, aerospace, home appliances, medical devices and environmental monitoring.

The core concept of this technology is to use a diaphragm that is sensitive to the applied pressure. When pressure is applied on the diaphragm, the displacement is detected and then transferred to an electrical signal, thus allowing the pressure to be measured or converted into electrical signals.

There are two main types of pressure sensors for use in different applications: resistance pressure sensors (RPS) and capacitive pressure sensors (CPS).

Resistance Pressure Sensors (RPS)

RPS works via the resistance principle. This means that when pressure is exerted on the diaphragm, the displacement is transferred via a potentiometer to the resistance of the pressure transducer, thus providing the pressure measurement.

This type of pressure sensor is very commonly used in a wide variety of applications, such as in the automotive and aerospace industries. They are also suitable for measuring different types of pressure, including low and high pressure.

Capacitive Pressure Sensors (CPS)

CPS works via the capacitor principle. This means that the change in pressure applied to the diaphragm alters the capacitance of the capacitor which results in the change of the amount of charges stored in it. This, in turn, produces the corresponding voltage or current signal which can be read by means of instrumentation.

This type of pressure sensor is also very popular with its use in various industries, including automotive, aerospace and medical. They are able to measure both low and high pressure, and are also able to detect small changes in pressure.

Conclusion

Pressure sensors, also known as transducers, are devices that measure pressure with respect to one or more compartments. They are most commonly used in the automotive, aerospace, home appliances, medical devices and environmental monitoring industries. Two of the most common types of pressure sensors are the RPS and CPS, which are used to detect and measure both low and high pressure.