Vaisala HMD60 / HMD70 Humidity and Temperature Transmitters
Duct mount HUMICAP transmitters designed for monitoring relative humidity and/or temperature in HVAC systems
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- HMD60 Series
- 2-wire, 4 to 20mA output
- HMD70 Series
- 3-wire, selectable voltage output
- 0 to 100% RH measurement
- ±2% RH accuracy
- -4 to 176°F (-20 to 80°C) temp range
- < ±1.08°F (±0.6°C) temp accuracy
- Stainless steel probe
- Vaisala HUMICAP Sensor
- Temperature compensated
- On-site calibration possible with HM70 meter
- IP65 (NEMA 4) housing
- NIST traceable certificate included
The Vaisala HMD60 / HMD70 Humidity and Temperature Transmitters are available in three models: U for humidity measurement-only, Y for humidity and temperature measurement, and T for temperature only.
The duct mount HMD60 and HMD70 transmitters can also be used in many industrial humidity monitoring applications, where their stability and resistance to chemicals and dust are of great value. A useful feature of these duct mount transmitters is the ability to remove the electronics without removing the unit from the duct.
The accuracy of the transmitters is simple to check using either the Vaisala HUMICAP Hand-Held Humidity and Temperature Meter HM70 or the Vaisala HUMICAP Humidity Indicator HMI41. The calibration can be done in seconds with a single potentiometer without disturbing the operation, resulting in great savings both in maintenance time and costs.