PSM

PSM

What This Data Means — For Quick Client Selection

  • Single setpoint switch → ideal for basic pump cut-in / cut-out or compressor trip/reset. 
  • No external power needed — purely mechanical contact action. 
  • If only one relay logic is required, PSM is sufficient; for 2 outputs, choose Baumer ZPDW. 
  • Great for low-maintenance utility environments where simplicity > PLC control.
  • Should not be used for high pulsation lines unless snubber is installed.
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Description

Indfos PSM is a robust single-setpoint pressure switch used widely in pump protection, air compressor cut-out control, RO booster systems, and hydraulic automation panels. Built on diaphragm sensing, it provides reliable ON/OFF switching without a PLC, making it ideal for low-cost utility rooms & pump houses needing direct relay control.

 Indfos PSM — Key Technical Data & Selection Parameters

Parameter Specification / Details
Measuring Range 0.2 … 21 bar (variants available)
Switch Type Single SPDT micro-switch (ON/OFF)
Sensing Element Diaphragm-based actuation
Setpoint Adjustment Manual screw (field adjustable)
Hysteresis Fixed (non-adjustable)
Media Compatibility Water, compressed air, neutral fluids
Process Connection ¼” BSP (standard), brass body
Maximum Working Pressure Up to 30 bar
Switch Accuracy ±2% FS
Operating Temperature −10 °C … +80 °C
Electrical Load 250 VAC, 5–8 A (contactor duty)
Ingress Protection IP65
Mounting Direct panel / pipe mount
Certifications CE

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