RHT DM Duct-Mount Temperature & Humidity Transmitter
Model: RHT150 DM / RHT300 DM / RHT400 DM
The RHT series transmitters measure air temperature and relative humidity continuously in ventilation ducts, HVAC systems and industrial air-handling applications, pairing a temperature sensing element with a capacitive humidity element and microprocessor signal processing. Choose the probe length (150, 300 or 400 mm) and the output (4–20 mA, 0–10 V or RS485 Modbus RTU).
- Stainless-steel duct probe in three lengths
- 4–20 mA, 0–10 V or RS485 Modbus RTU output
- Capacitive humidity element with microprocessor signal processing
- Temperature drift ≤0.1 °C/year
- Customised ranges available on request
| Parameter | Value |
|---|---|
| Measuring range – temperature | Up to -40…125 °C (version-dependent) |
| Measuring range – humidity | 0…100 % |
| Measuring units | °C / °F & % RH |
| Temperature drift | ≤0.1 °C/year |
| Output | 4-20 mA / 0-10 V / RS485 Modbus RTU |
| Supply voltage | 12 VDC to 30 VDC; maximum consumption 70 mA ± 10 % @ 24 Vdc |
| Mounting | Duct mount with SS probe |
| Probe length | RHT150: 150 mm · RHT300: 300 mm · RHT400: 400 mm |
| Protection standard | IP54 |
| Operating temperature | -20 °C to +60 °C |
| Storage temperature | -40 °C to +85 °C |
| Operating humidity | 0–95 % RH (non-condensing) |
| Media compatibility | Air, non-combustible, non-corrosive gases |
| Order code group | Code | Option | Example order code |
|---|---|---|---|
| Output | 00 | 0-10 V | – |
| Output | 01 | RS485 | – |
| Output | 02 | 4 - 20 mA | – |
| Length | 101 | 150 mm | – |
| Length | 102 | 300 mm | – |
| Length | 103 | 400 mm | – |
| – | – | – | RHT -01-00-00-00-102 |
HVAC systems & BMS integration
Ventilation ducts & air-handling units
Cleanrooms & pharmaceutical environments
Warehouses & cold storage
Data centres & server rooms
Scope of supply
- Calibration certificate
- GUI software
- SS adaptor (RHT300 / RHT400)
- Manual
HVAC duct monitoring
Interact with the simulation – change the conditions and see how the RHT150 DM / RHT300 DM / RHT400 DM responds.
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