User manual VAISALA GMW45 DATASHEET

[. . . ] Box 26, FIN-00421 Helsinki, FINLAND Tel: +358 9 894 91 Fax: +358 9 8949 2485 Email: industrialsales@vaisala. com www. vaisala. com GMW45 Carbon Dioxide Transmitters for Demand Controlled Ventilation Applications Features/Benefits · · · · · Compact wall mount transmitter for demand controlled ventilation Incorporates Vaisala CARBOCAP® Sensor - the silicon-based NDIR sensor Excellent long-term stability Five year recommended calibration interval Easy-to-install Vaisala CARBOCAP® Carbon Dioxide Transmitter GMW45 is a basic wall mount transmitter for demand controlled ventilation. The wall mount Vaisala CARBOCAP® Carbon Dioxide Transmitter GMW45 is ideal for monitoring the air quality in public, commercial and residential buildings. [. . . ] Due to its built-in reference measurement capabilities and simple structure, the sensor is extremely stable and reliable. In addition, the measurement accuracy of the sensor is not affected by dust, water vapor or most chemicals. Basic DCV transmitter The GMW45 is a basic cost-effective CO2 transmitter intended to be used in building energy management systems. If CO2 transmitters with additional measurements are required, Vaisala offers a wide variety of wall and duct mount CO2, CO2 +T, RH and RH+T transmitters for demand controlled ventilation. 94 Vaisala Instruments Catalog 2005 Ref. A GMW45 CARBON DIOXIDE Technical Data Carbon dioxide Measuring range Accuracy at +25 °C (+77 °F) against certified factory references 0. . . 2000 ppm CO2 <±[40 ppm CO2+ 3% of reading] (includes repeatability and calibration uncertainty) <±1. 0 %FS 0. 15 %FS /°C <5. 0 %FS /5 years 5 years 1 minute -5. . . +45 °C (23 . . . 113 °F) 0. . . 85 %RH non-condensing Selectable 0. . . 20 mA or 4. . . 20 mA or 0. . . 10 V 10 ppm CO2 Dimensions Dimensions in mm Non-linearity Temperature dependence of output (typically) Long-term stability Recommended calibration interval Response time (0. . . 63%) Operating conditions Operating temperature range Humidity range Wiring 24V GND OUT 0-10V 0-20mA 4-20mA General Output signals for CO2 OUTPUT SELECTION JUMPERS 0-10V SELECTED 0-20mA SELECTED Resolution of analog outputs Recommended external load: current output max. [. . . ] ©Vaisala Oyj Accessories GM35001 19222GM GM70 GM70 w/pump option Calibration pipe Calibration software kit (includes disk and serial COM adapter) hand-held carbon dioxide meter hand-held CO2 meter for field verification Vaisala Instruments Catalog 2005 Ref. [. . . ]