Siemens QBM81 is a differential pressure switch specifically designed for monitoring under and over pressure in ventilation as well as air conditioning plants. This tool has a pressure of 20 to 5000 Pa, single pole changeover output, an IP54 protection class and a temperature range of 0 to 70 °C.

Application:

In ventilation and air conditioning plants to:

Monitor differential pressure, underpressure and overpressure, Monitor air filters and air flows, Recognize torn fan belts and Differential pressure switches can be used in clean rooms, kitchens etc.