The Vaisala HMDW110 Series is the balanced high-accuracy choice for HVAC humidity and temperature measurement in ducts, indoor spaces and outdoor locations.
The Vaisala HMDW110 Series measures relative humidity and temperature in demanding HVAC and building-automation applications. It occupies the balanced middle tier of the Vaisala HMW range: greater accuracy, environmental protection and calibration documentation than the cost-effective HMDW80 Series, while the HMW90 remains the premium choice for the highest indoor wall-mount accuracy.
The series includes the HMW110 for wall mounting, HMD110 for ventilation ducts and HMS110 for outdoor measurement. Each instrument is individually adjusted and supplied with a traceable calibration certificate.
| Series | Position | Humidity Accuracy | Calibration Certificate | Best Fit |
|---|---|---|---|---|
| HMW90 | Premium | Up to ±1.7% RH | Included | Highest-accuracy indoor wall measurement |
| HMW110 / HMD110 / HMS110 | Balanced high-accuracy | Up to ±2% RH | Included | Demanding wall, duct and outdoor HVAC |
| HMW80 / HMD80 / HMS80 | Cost-effective | Up to ±3% RH | Not supplied | Routine building automation |
Selection note: Choose HMW90 when the highest indoor wall-mount accuracy is the priority. Choose the HMDW110 Series for a strong balance of accuracy, rugged installation options and included calibration documentation. Choose HMDW80 for standard HVAC projects where budget is the main consideration and an included calibration certificate is not required.
| Model Family | Installation | Typical Application |
|---|---|---|
| HMW110 / HMW112 | Wall mounted | Data halls, cleanrooms, laboratories, plant rooms and controlled indoor spaces |
| HMD110 / HMD112 | Ventilation duct | Supply-air, return-air and air-handling-unit duct measurement |
| HMS110 / HMS112 | Outdoor with radiation shield | Outdoor reference humidity and temperature for HVAC control |
| Specification | Performance |
|---|---|
| Relative Humidity Range | 0–100% RH |
| RH Accuracy at +10 °C to +30 °C | ±2% RH from 0–90% RH; ±3% RH from 90–100% RH |
| Temperature Accuracy | Up to ±0.2 °C within the specified central range |
| Humidity Sensor | Vaisala HUMICAP 180R; catalytic HUMICAP 180V option for selected demanding environments |
| Temperature Sensor | Pt1000 |
| Calibration | Individually adjusted; traceable certificate included |
| Option | Details |
|---|---|
| Analog | Two-wire 4–20 mA current outputs |
| Digital | RS-485 with Modbus RTU |
| Display | Available on selected models |
| Connection | Cable gland and screw terminals; M12 option for selected wall models |
| Calculated Outputs | Dew point, wet-bulb temperature, enthalpy, absolute humidity and mixing ratio, depending on configuration |
Seacom Process Instruments supplies and supports the Vaisala HMW110, HMD110 and HMS110 in Malaysia. Contact our team for assistance selecting the mounting style, output, display, sensor and calculated parameters for your HVAC or building-automation project.
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