Sensors & Measurement
Pressure switch
A device that changes electrical state when pressure crosses a set point.
IN ONE SENTENCE
It answers a simple question such as 'has the pressure reached 8 bar?' rather than continuously reporting the exact value.
In normal English
Mechanical and electronic pressure switches differ in accuracy, hysteresis and adjustability. Selecting the differential is important where pressure fluctuates.
Why would I use it?
Use it for alarms, pump control and simple pressure-dependent actions.
THINK OF IT LIKE…
A pressure-triggered light switch.
Related terms
pressure sensor, hysteresis, setpoint
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