RHT50 WM Temperature & Humidity Transmitter

Model: RHT50 WM

The RHT50 WM measures air temperature and relative humidity using an external temperature sensor and a thermoset-polymer capacitive humidity element. It provides one analogue output for humidity and one for temperature, each selectable as 0/2…10 V or 4…20 mA, plus an RS485 Modbus RTU interface.

Temperature and humidity measurement in one wall-mount unit
Two analogue outputs (0/2…10 V or 4…20 mA) plus RS485 Modbus RTU
Excellent linearity and good long-term stability
Wide 12–30 Vdc supply range
Compact 75 × 35 × 75 mm housing

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Parameter	Value
Measured parameters	Temperature & humidity
Accuracy – temperature	± 0.4 °C (0 °C to 60 °C)
Accuracy – relative humidity	± 1.8 % RH at 23 °C (0 % to 90 % RH)
Measuring units	°C, % RH
Measurement elements	External temperature sensor; thermoset polymer capacitive sensing element for humidity
Output signal 1	0/2…10 V or 4…20 mA (linear to RH) — 2–10 V output: display required
Output signal 2	0/2…10 V or 4…20 mA (linear to temperature) — 2–10 V output: display required
Language	English
Digital output	RS485 Modbus RTU
Supply voltage	12 Vdc to 30 Vdc; maximum consumption 70 mA ± 10 % @ 24 Vdc
Installation	Wall mounting; mount the sensor probe with the tip facing downward (datasheet)
Media compatibility	Air, non-combustible, non-corrosive gases
Mounting	Wall mount
Dimensions	75 × 35 × 75 mm
Colour	White grey