SiemensPressure Switches
QPD15... Air Differential Pressure Switch
QPD15... air differential pressure switch for HVAC and burners.
Technical Specifications
| Parameter | Specification |
|---|---|
| Device type | Air differential pressure switch |
| Function | Monitoring air pressure or air flow |
| Measuring range | Low differential pressure range (model-dependent) |
| Switching principle | Diaphragm-based differential pressure sensing |
Notes
- Supervises combustion air flow or fan operation
- Prevents burner start or causes shutdown in case of air failure
- Used in forced-draught burner and boiler systems
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