PSM02 – Compact pressure switch
The WIKA PSM02 is a heavy-duty mechanical screw-in pressure switch engineered for general industrial applications. Its hallmark feature is an adjustable switch hysteresis (on/off differential), allowing operators to control the exact variance between the activation and deactivation points easily via an on-site adjustment screw.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The WIKA PSM02 is a heavy-duty, mechanical screw-in pressure switch engineered for precise automation and safety monitoring in demanding industrial environments.
Its defining feature is an adjustable switch hysteresis, which allows users to manually set the exact buffer zone between the switch’s turn-on and turn-off points. This prevents the connected machinery from rapidly cycling on and off when system pressures fluctuate near the set point.
| Parameter | Technical Specification / Detail |
|---|---|
| Model | WIKA PSM02 (Mechanical Compact Pressure Switch) |
| Key Feature | Adjustable switch hysteresis (on/off differential) via an on-site adjustment screw |
| Switching Function | Change-over (SPDT), Normally Open (NO), or Normally Closed (NC) |
| Sensor Element | NBR diaphragm (low pressure) or steel piston with NBR sealing (high pressure) |
| Setting Ranges | Vacuum/Low: -0.85 … -0.15 bar to 0.2 … 2 bar High Pressure: Up to 30 … 320 bar |
| Reproducibility | ≤ ±2% of the full-scale value (high switch point repeatability) |
| Adjustable Hysteresis | Settable range between 5% to 20% of the set switch point |
| Electrical Rating | Up to 4 A at 250 V AC |
| Electrical Connection | Angular connector DIN EN 175301-803 Form A / Form C, or circular M12 × 1 |
| Ingress Protection | Up to IP65 (dust-tight and protected against water jets) |
| Process Connection | G 1/4 A, G 1/8 A, M14 × 1.5, or 1/4 NPT thread options |
| Wetted Materials | Galvanised steel, brass, or stainless steel options |
| Media Suitability | Compressed air, neutral/clean gases, and self-lubricating fluids (oils) |
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