Description
Baumer ZPDW is an industrial two-stage mechanical diaphragm pressure switch designed for pump protection, compressor staging, boiler automation & dual-level cut-in/cut-out logic. With two independent switching points in one body, it enables start/stop or high/low alarm functions without PLC — ideal for rugged water, air & utility applications needing reliable relay-based safety control.
ZPDW — Key Technical Data & Selection Parameters
| Parameter | Specification / Details |
| Measuring Range | 0.2 … 16 bar (model variant) |
| Dual Switching Outputs | 2× SPDT micro-switch (Independent setpoints) |
| Setpoint Adjustment | Manual screw-type, factory calibrated |
| Hysteresis | Fixed (non-adjustable) |
| Media Compatibility | Water, compressed air, neutral fluids |
| Process Connection | G¼ / G½ (Brass or SS) |
| Maximum Working Pressure | Up to 30 bar |
| Switching Accuracy | ±2% FS typical |
| Operating Temperature | −10 °C … +80 °C |
| Electrical Rating | 250 VAC, 5–8 A (contactor/relay duty) |
| Ingress Protection | IP65 (industrial enclosure) |
| Housing | Zinc-coated / SS options |
| Function | Two-stage start/stop or alarm pressure switching |
| Approvals | CE compliant |





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