Overview
The Belimo 22DTM-5106 is an active duct sensor designed for multi-variable monitoring of CO₂, relative humidity, and temperature in commercial HVAC systems. Equipped with an LCD display, it provides real-time local monitoring and reliable output signals for building automation.
Features
- Integrated LCD display for local real-time measurement readings
- Simultaneous active monitoring of CO₂, relative humidity, and temperature
- Field-selectable 0…5 V or 0…10 V analog output signals
- NEMA 4X / IP65 rated enclosure for reliable protection in duct environments
- Dual-channel NDIR sensing technology for accurate CO₂ detection
Specifications
- CO₂ Measurement Range: 0…2000 ppm
- Output Signal: 0…5 V, 0…10 V (selectable)
- Probe Length: 7 inches [180 mm]
- Probe Diameter: 0.78 inches [19.5 mm]
- Display Type: LCD
- Enclosure Rating: NEMA 4X / IP65
Applications
- Demand-controlled ventilation (DCV) in commercial ductwork
- Indoor air quality monitoring in supply and return air ducts
- Temperature, humidity, and CO₂ tracking in building management systems


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