Temperature & Humidity Transmitters · RHT Series
RHT50 WM Temperature & Humidity Transmitter
Model RHT50 WM
Wall-mount temperature and humidity transmitter with two analogue outputs and RS485 Modbus RTU.
- Accuracy
- ±0.4 °C · ±1.8 % RH
- Outputs
- 4–20 mA / 0–10 V, RS485
- Supply
- 12–30 Vdc
- Size
- 75 × 35 × 75 mm
Overview
The POLWAX RHT50 WM measures air temperature and relative humidity with an external temperature sensor and a thermoset-polymer capacitive humidity element. It provides one analogue output for humidity and one for temperature (0/2…10 V or 4…20 mA) plus an RS485 Modbus RTU interface.
Key features
- Temperature and humidity 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 supply range 12–30 Vdc
- Compact 75 × 35 × 75 mm housing
Technical specifications
Measurement ranges & outputs
| 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 |
General
| Language | English |
|---|
Power supply & connectivity
| Digital output | RS485 Modbus RTU |
|---|---|
| Supply voltage | 12 Vdc to 30 Vdc; maximum consumption 70 mA ± 10 % @ 24 Vdc |
Installation & environment
- 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 |
Specifications are subject to change. Please check the current datasheet or ask our team before ordering.
Applications & industries
Scope of supply
- Calibration certificate
- GUI software
- Manual
Product enquiry
Request a quote for RHT50 WM Temperature & Humidity Transmitter
Tell us about your application — what you need to measure, the range, number of points and where the instrument will be installed. Our team will reply with a recommendation and quotation.
- Technical advice on model and options
- Quotation for your quantity
- Datasheets and documentation on request
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- Protection
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- Output
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