PSM-550 – Pressure Switch, Heavy-Duty Version
The WIKA PSM-550 is a highly durable, heavy-duty mechanical pressure switch designed for demanding industrial process control and monitoring applications. It functions entirely without digital electronics, utilizing a purely mechanical bellows-and-spring assembly that converts fluid pressure into mechanical movement to trigger an internal electrical microswitch.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The WIKA PSM-550 is a highly reliable mechanical, heavy-duty pressure switch explicitly manufactured for industrial-grade control, monitoring, and alarm tracking functions. Engineered using a rugged bellows-and-spring assembly, this mechanical switch guarantees superb repeatability and long-term calibration stability without requiring any digital electronics. It is ideal for handling non-corrosive process media such as oil, water, and air.
| Parameter / Feature | Technical Specification & Detail |
|---|---|
| Switch Type | Mechanical heavy-duty pressure switch (Bellows & spring type) |
| Contact Type | 1 SPDT (Single-Pole Double-Throw) microswitch |
| Electrical Rating | AC 250 V, 15 A / DC 24 V, 8 A |
| Pressure Ranges | 0.1 to 1.1 Bar up to 10 to 30 Bar (Variant dependent) |
| Setting Options | Adjustable setpoint and adjustable deadband (Differential) |
| Max. Working Pressure | Up to 45 Bar (For high-pressure variants) |
| Repeatability | ≤ 1% of full scale span |
| Bellows Material | Phosphor Bronze (Standard) or SS 304 (Heavy-duty) |
| Wetted Parts | Brass or Stainless Steel |
| Media Temperature | Up to 70°C (Phosphor Bronze) / Up to 170°C (Stainless Steel) |
| Ingress Protection | IP67 (Weatherproof ABS and polyester housing with nitrile seals) |
| Process Connection | G 3/8 B (Male standard) |
| Electrical Entry | 1/2″ NPT (Female) |
| Best Used For | Oil, water, air, and other non-corrosive media |
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