User manual VAISALA HMD40-50 DATASHEET

[. . . ] Box 26, FI-00421 Helsinki, FINLAND Tel: +358 9 894 91 Fax: +358 9 8949 2485 Email: industrialsales@vaisala. com www. vaisala. com/HMDW4050 HMW40/50 and HMD40/50 Wall and Duct Mount Transmitters for HVAC Applications Features/Benefits · · · · · · · · · · Vaisala INTERCAP® Humidity and Temperatur e Transmtters HMD/W40/50 are competitively priced and require no routine maintenance ­ a smart choice for your HVAC/ EMC applications. Specially designed for building energy management systems 10 . . . [. . . ] The transmitters measure humidity with a ±3 %RH accuracy and a ±1 %RH stability per year. Low maintenance costs The HMD40/50 humidity transmitters use Vaisala INTERCAP® Sensor - the world's first interchangeable capacitive humidity sensor. The sensor is also insensitive to dust as well as most chemicals. Selectable functions (HMD/W50) The HMD/W50 transmitters feature selectable output signals of 0 to 1 V and 0 to 10 V. They can be powered by either AC or DC voltage. In energy management systems, the accurate measurement of relative humidity and temperature is essential for optimum control of the environment. 36 Vaisala Instruments Catalog 2009 Ref. A HMD/W40/50 HUMIDITY Technical Data Relative humidity Measurement range ( for which accuracy is specified) Operating range HMD40/50 HMW40/50 Accuracy at +20 °C (+68 °F) Stability Temperature dependence Sensor 10 . . . 90 %RH better than ±3 %RH ±2 %RH over 2 years <±1. 5 %RH from -10 . . . DRW010522 Housing material ABS plastic Housing classification (HMD40/50) IP65 (NEMA 4) Electromagnetic compatibility Complies with EMC standard EN61326-1, Generic Environment Wiring HMD40/50 wiring diagram HMW40/50 wiring diagram Temperature (40Y and 50Y) Measurement range HMD40/50 HMW40/50 Total accuracy at +25 °C Temperature dependence Sensor -10 . . . [. . . ] HMW40/50 HMD40/50 INTERCAP® is a registered trademark of Vaisala Specifications subject to change without prior notice. [. . . ]