The pressure switch P233A-4-PHC detects a change in the differential pressure when the air flow varies.

It can also be used to detect small pressures (positive) by connecting only the outlet of high pressure and leaving the outlet open low, so it detects the atmospheric pressure.
Similarly it can be used to detect small depressions connecting the outlet of low and leaving the outlet at high environment.

- SOME FEATURES -
• One instrument for the measurement of relative pressure, the vacuum or pressure differential
• Various accessories available
• Execution compact and long lasting
• Installation and wiring easy, various mounting options
• Accurate and stable switch point
• SPDT standard
• IP54

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