Pressure and vacuum sensors

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Vacuum pressure switch

Vacuum pressure switches measure the pressure at the pressure inlet of the sensor.
With the aid of a pressure measuring cell installed in the sensor, the overpressure or underpressure applied to the sensor is compared with the prevailing ambient pressure (relative pressure measuring cell) and output as an electrical signal.
A vacuum pressure switch often detects whether an applied vacuum is above or below a defined switching threshold and outputs this information as a binary, electrical signal. However, the electrical output is also possible as an analog signal proportional to the applied pressure.