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Siemens Differential Pressure Switch QBM81-20
QBM81-20 Siemens Differential Pressure Switch 500 - 2000Pa
For air and non aggressive gases
For ventilation and air conditioning plants
Monitoring of air filters, airflow, fan belts. Pressu...< a href="#" id="short_description-readmore"> read more
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QBM81-20 Siemens Differential Pressure Switch 500 – 2000Pa
- For air and non aggressive gases
- For ventilation and air conditioning plants
- Monitoring of air filters, airflow, fan belts. Pressure in clean rooms and kitchens
- Monitoring of differential pressure, under pressure and over pressure
- Highly precise setting
- Long-term stability
| Operating Voltage | AC/DC 24 V |
|---|---|
| Pressure range | 500…2000Pa |
| Max. unilateral overload | -30…75 °C 7500 Pa -30…85 °C 5000 Pa |
| Permitted Media | Air, non-corrosive gases |
| Reproduceability for range | 20…300 Pa <±2.5 Pa 50…2000 Pa <±5 Pa 1000…5000 Pa <±15 Pa |
| Switching Differential | Factory Set |
| Protection Degree of Housing | IP54 |
| Reset | Automatic |
| Ambient Temperature | Operation -30…+85⁰C Storage -40…+85⁰C |
| Ambient Humidity | <90% RH (non condensing) |
| Degree of protection | Transducer IP42 according to EN 60529 Sensor Head IP20 according to EN 60529 |
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