Siemens QBM81-3 Differential Pressure Monitor

Product Id : 277597


Siemens QBM81-3 Differential Pressure Monitor is a high-quality and versatile device designed for precise and reliable measurement of differential pressure in various industrial applications. With its advanced technology and robust construction, this monitor offers exceptional performance and accuracy.

Applications: Air Handling Units, Cleanrooms, Laboratories, Hospitals, Pharmaceutical Industry, HVAC Systems, and Industrial Applications

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Country : United States

Product Description

Siemens QBM81-3 Differential Pressure Monitor is an air pressure monitor with the differential pressure switch QBM 81-3 intended to keep an eye on the performance of the fans and air filters. Additionally, for clean rooms, kitchens, etc., pressure monitoring is a important parameter in the industries for safety. 
Features of Siemens QBM81-3 Differential Pressure Monitor:

  • 4 to 20 mA output signal powered by a loop (QBE3100)
  • SPDT contact output (QBM81)
  • Compact construction
  • Quick and simple installation using a single screw to secure an integrated mounting bracket and snap-on cover.
  • Multiple mounting positions with a resettable zero point (QBM3100).
  • Ultra-low susceptibility to temperature
  • There is no mechanical aging.


Additional Information

Manufacturer Siemens
Model No QBM81-3
Range 20…300 Pa
Type of switch Single-pole change-over, multi-layer contact
Switching differential Factory set
Reset Automatic
Protection class IP54
Ambient Temperature -40 to +85 °C (-40 to +185 °F)
Operating Humidity <90 % r.h. (non-condensing)
Weight 0.19 kg with mounting bracket

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