Belimo 22DTH-51M : Duct Humidity / Temperature Sensor, 2% Accuracy, RH Outputs: 0-5 VDC or 0-10 VDC, Temperature Transmitter 0-5 VDC or 0-10 VDC, UL Enclosure Type 4X/IP65
The Belimo 22DTH-51M sensor delivers accurate ±2% relative humidity and temperature readings for optimal HVAC duct monitoring. Its dual analog outputs (0-5 VDC or 0-10 VDC) for both humidity and temperature provide flexibility for integration into various building control systems. The robust UL Type 4X/IP65 enclosure withstands harsh environments, while the 5.5" probe ensures reliable measurements within the duct.
Key features:
- ±2% RH accuracy for precise humidity control
- Wide 0-100% RH non-condensing range
- Dual analog outputs for temperature and humidity
- Selectable voltage outputs (0-5 VDC or 0-10 VDC)
- Rugged UL Type 4X/IP65 enclosure for lasting durability
- 5.5" probe for optimal duct air sampling
Ideal for:
- HVAC ductwork humidity and temperature monitoring
- Building automation and control systems
- Environmental monitoring applications
Specifications
| Voltage AC/DC | AC/DC 24 V |
| Electrical Connection | Terminals |
| Measured Values | Temperature/Humidity |
| Output Signal | 0...5 V / 0...10 V |
| Measuring Range Humidity | 0...100% RH non-condensing |
| Output Voltage [Range] | 2 x 0...5 V, 0...10 V, min. resistance 10 kΩ |
| Output signal active note | Output 0...5/10 V with jumper adjustable |
| Probe Length | 5.5" [140 mm] |
Datasheets
 | Technical data sheet – Belimo 22DTH-51M |
| Installation Instructions for Belimo 22DTH Series |
| Belimo Sensor Brochure |
| Sensors Master Format - Consultant Specifications |
- Sensor Type:
- Duct
- Output Signal:
- 0-5 VDC or 0-10 VDC
- Temperature Element:
- Transmitter
- Supported Protocols:
- None
- Humidity Element:
- 2%
- CO2 Element:
- None
- Display:
- No Display
- Probe Length:
- 8
