Temperature & Humidity Transmitters · RHT Series
RHT210 / RHT211 Transmitter with External Sensor
Model RHT210 TR / RHT210 ES / RHT211 TR
Temperature and humidity transmitter with external stainless-steel probe and filter, with or without display.
- Probe
- 150 mm SS with SS filter
- Outputs
- 4–20 mA, RS485 / 0–10 V opt.
- Supply
- 24 VDC
- Size
- 75 × 35 × 75 mm
Overview
The RHT210 / RHT211 transmitters measure temperature and humidity with an external 150 mm stainless-steel probe fitted with a stainless-steel filter. Versions with and without display are available, with 4–20 mA and RS485 Modbus RTU outputs (0–10 V optional).
Key features
- External 150 mm stainless-steel probe with SS filter
- Versions with and without display
- 4–20 mA and RS485 Modbus RTU outputs, 0–10 V optional
- Excellent linearity and good long-term stability
Technical specifications
Measurement ranges & outputs
| Inputs | Temperature & humidity |
|---|---|
| Output | 4-20 mA, RS485 Modbus RTU / 0-10 V (optional) |
General
| Display | With & without display |
|---|---|
| Language | English |
Power supply & connectivity
| Supply voltage | 24 VDC |
|---|
Installation & environment
| Probe | SS probe length 150 mm, SS filter |
|---|---|
| Mounting | Duct mount |
| Dimensions | 75 × 35 × 75 mm |
| Protection class | IP54 |
| Media compatibility | Air, non-combustible, non-corrosive gases |
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
- SS adaptor
- Manual
Product enquiry
Request a quote for RHT210 / RHT211 Transmitter with External Sensor
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
Related POLWAX products
All transmitters
RHT DM Series
RHT DM Duct-Mount Temperature & Humidity Transmitter
Model RHT150 DM / RHT300 DM / RHT400 DM
Duct-mount temperature and humidity transmitters with stainless-steel probe in 150, 300 or 400 mm length.
- Probe
- 150 / 300 / 400 mm SS
- Outputs
- 4–20 mA / 0–10 V / RS485
- Supply
- 12–30 VDC
- Protection
- IP54
Applications: HVAC systems & BMS integration · Ventilation ducts & air-handling units · Cleanrooms & pharmaceutical environments
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
Applications: Agriculture & greenhouses · Storage & warehouses · Museums & buildings
ClimaTRANS
ClimaTRANS RHT100 Temperature & Humidity Transmitter
Model RHT100
Industrial temperature and humidity transmitter with TFT display, RS485 Modbus RTU and wall or duct mounting.
- Accuracy
- ±0.3 °C · ±1.8 % RH
- Output
- RS485 Modbus RTU
- Display
- TFT
- Protection
- IP65
Applications: HVAC systems & BMS integration · Cleanrooms & pharmaceutical environments · Warehouses & cold storage
DPT Series
DPT20 Differential Pressure Transmitter
Model DPT20
Panel-mount differential pressure transmitter for air and non-corrosive gases, ranges up to 0–250 mm WC, with buzzer or 4–20 mA output.
- Range
- Up to 0–250 mm WC
- Accuracy
- ±0.5 % FS (≥ 0–25 mm WC)
- Output
- Buzzer or 4–20 mA
- Mounting
- Panel mounting
Applications: HVAC systems – airflow and filter monitoring · Clean rooms – contamination prevention · Industrial processes – filter and pump monitoring