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. The temperature dependence of CARBOCAP® is negligible. 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. Power supply Power consumption Warm-up time 24V GND OUT 500 Ohm 1 kohm nominal 24 VAC/VDC <2. 5 W 1 minute 30 minutes full specification Housing material ABS plastic Weight 75 g Complies with EMC standard EN61326-1:1997 + Am1:1998 + Am2:2001; Generic Environment. POWER SUPPLY ANALOGUE OUTPUT 4-20mA SELECTED CARBOCAP® is a registered trademark of Vaisala. [. . . ] ©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. [. . . ]