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Siemens Differential Pressure Switch QBM81-10


Siemens Differential Pressure Switch QBM81-10 100 – 1000Pa

  • 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.
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Operating Voltage

AC/DC 24 V

Pressure range

100…1000Pa

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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