Vaisala HMW90 Series Humidity and Temperature Transmitter
Wall-mounted HUMICAP® humidity and temperature transmitter for demanding indoor HVAC spaces — data halls, laboratories, museums and archives. Up to ±1.7 %RH accuracy, user-exchangeable measurement module, analog or Modbus RTU output and a traceable calibration certificate.
Description
The HMW90 series measures relative humidity and temperature in indoor HVAC applications where high accuracy, stability and reliable operation are required — data halls, laboratories, museums, archives and production spaces. Wiring connects through the back plate, the electronics snap on afterwards, and DIP switches inside the enclosure handle configuration.
Key features
- Analog (current or voltage) and Modbus® RTU field-bus models
- Full 0 … 100 %RH range, accuracy up to ±1.7 %RH
- Calculated parameters: dew point, mixing ratio, enthalpy, wet bulb, dew point depression, absolute humidity
- User-exchangeable humidity and temperature module (HTM10SP)
- One-point field adjustment with offset trimmers behind the sliding cover; two-point calibration via service port
- Traceable calibration certificate included; white or black housing
Models
| HMW92 / HMW92D | RH+T, 2-wire 4 … 20 mA (D = with display) |
|---|---|
| HMW93 / HMW93D | RH+T, 3-wire voltage output (D = with display) |
| HMW95 / HMW95D | RH+T, Modbus RTU (D = with display) |
| HMW90 | RH+T, configurable analog / Modbus RTU |
| TMW92 / TMW93 / TMW90 | Temperature-only versions |
Riajati supplies Vaisala instruments in Malaysia — send us your measurement points, required outputs and quantities through the Enquiry tab for a quotation.
| Relative humidity | |
|---|---|
| Measurement range | 0 … 100 %RH, non-condensing |
| Accuracy +10 … +40 °C | ±1.7 %RH (0 … 90 %RH), ±2.5 %RH (90 … 100 %RH) |
| Accuracy −5 … +10 °C, +40 … +55 °C | ±3 %RH (0 … 90 %RH), ±4 %RH (90 … 100 %RH) |
| Stability (typical HVAC) | ±0.5 %RH/year |
| Sensor | Vaisala HUMICAP® 180R |
| Temperature | |
| Measurement range | −5 … +55 °C |
| Accuracy +20 … +30 °C | ±0.2 °C |
| Accuracy +10 … +20 °C, +30 … +40 °C | ±0.3 °C |
| Accuracy −5 … +10 °C, +40 … +55 °C | ±0.5 °C |
| Inputs and outputs | |
| Current output models | 2 × 4 … 20 mA, loop powered; 20 … 28 VDC at 500 Ω, 10 … 28 VDC at 0 Ω |
| Voltage output models | 2 × 0 … 5 V or 0 … 10 V; 18 … 35 VDC or 24 VAC ±20 %; 1 relay (50 V, 500 mA) |
| Field bus models | RS-485 (isolated 1.5 kV), Modbus RTU, address 1 … 247; 18 … 35 VDC or 24 VAC ±20 % |
| Service port | RS-485, 4-pin M8 |
| Environment and mechanics | |
| Operating temperature | −5 … +55 °C |
| IP rating | IP30 |
| Housing | ABS/PC, UL-V0; white RAL9003 (black RAL9005 on configurable models) |
| Weight | 155 g |
| Compliance | CE, RCM; EN 61326-1 industrial environment |
Reviews
There are no reviews yet.