Overview
The Belimo 22MT-545 is an active duct averaging temperature sensor with a 20 ft [6 m] probe and a 4-20 mA current output signal. Built for broad air coverage, it overcomes air stratification in large commercial ductwork.
Features
- Extended 20 ft [6 m] continuous sensing element for wide duct coverage
- 4…20 mA active output signal for reliable long-distance communications
- 8 field-selectable measuring ranges to simplify inventory and deployment
- Durable plastic housing rated NEMA 4X / IP65
- Includes full mounting kit with 6 support brackets
Specifications
- Probe Length: 20 ft [6 m]
- Output Signal: 4…20 mA
- Sensing Element: Continuous flexible probe
- Supply Voltage: 24 V DC
- Enclosure Rating: NEMA 4X / IP65
Applications
- Air temperature averaging in oversized main ducts and plenums
- Thermal monitoring in large commercial HVAC air handlers
- Stratification-free temperature control for building automation systems



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