Overview
The Belimo 22DTH-51ME is a duct relative humidity and temperature sensor combining an active humidity signal with a passive Ni1000 (JCI) temperature sensor. It is designed for compatibility with Johnson Controls building automation systems.
Features
- Active humidity output with selectable 0…5 V / 0…10 V range
- Passive Ni1000 (JCI) temperature sensing element
- Selectable outputs for enthalpy, dew point, or relative humidity
- IP65 / NEMA 4X enclosure for protection in duct environments
Specifications
- Measured Values: Humidity (active) and Temperature (passive)
- Passive Element: Ni1000 (JCI)
- Probe Length: 5.5 inches [140 mm]
- Output Signal Active: 0…5 V, 0…10 V
- Enclosure Rating: NEMA 4X / IP65
Applications
- Legacy or modern Johnson Controls (JCI) HVAC system integration
- Air duct climate control and humidity sensing


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