Datasheet Contact us Buy now CO2, Temperature and Humidity Transmitter Series GMW90 for green building projects The wall-mounted Vaisala GMW90 Series CARBOCAP® Carbon Dioxide, Temperature and Humidity Transmitters are especially suited for green building projects and demand controlled ventilation. The devices measure carbon dioxide and temperature and have an option for an additional humidity measurement. The instruments come with a calibration certificate that meets traceability and compliance requirements. Traceability is easily maintained with field-exchangeable intelligent measurement modules. The transmitter can be blended into the interior design of the space where it is installed using the optional decorative cover. View all our instruments for HVAC applications. Click here to download bid specs for USA. Features Measured parameters: carbon dioxide, temperature, and humidity (optional) Superior long-term stability with the next generation Vaisala CARBOCAP sensor Accurate temperature and humidity measurements due to the low-power microglow infrared source Quick and easy installation and maintenance Calibrated, user-exchangeable measurement modules 3-point traceable CO2 calibration (certification included) Both analog and digital communication (BACnet/Modbus) Optional decorative cover blends the transmitter into your interior design + Show more Key Benefits Easy installation The GMW90 Series Transmitters have been designed for quick and easy installation. Every model includes a display for easy startup. To protect the sensor from dust and dirt during construction and installation, the units can be cabled with back-plate only. Electronics can be snapped on later at an appropriate phase in the construction project. This saves installation time in the project. Convenient calibration Regular instrument maintenance guarantees a long product lifetime although the transmitter’s inspection interval is five years. Calibration is easiest using the exchangeable measurement modules. Sensor traceability and measurement quality is easily maintained by snapping on a new module calibrated at Vaisala factory. The instrument can also be calibrated using a hand-held meter or reference gas CO2 bottle. The service interfaces are easy to reach by simply sliding the cover down. The closed cover keeps the measurement environment stable during calibration and ensures a top-quality final result. Watch the video View this video on how to calibrate GMW90. Downloads Datasheet (1.88 MB) GMW90 Datasheet Download the Datasheet Datasheet: GMW90 Datasheet (1.88 MB) Manual: Decorative Cover Quick Guide in English (2.16 MB) Manual: XMW90 Series BACnet PICS in English (304.41 KB) Manual: GM10 Quick Guide in English (1.08 MB) Manual: GMW90 Series User's Guide in English (2.4 MB) Manual: Decorative Cover Printable Insert (717.45 KB) Manual: HTM10 and TM10 Quick Guide in English (382.29 KB) Order Form: GMW90 Order Form (71.05 KB) All downloads Product Resources Common pitfalls when installing HVAC wall sensors Read more Customer Stories Success Story Why climate control systems provider Damatex chose Vaisala sensors for their greenhouse customers Climate control systems are revolutionizing greenhouses, HVAC and building automation. Read how Damatex uses Vaisala technology to achieve... Read more Success Story Infosys monitors indoor air with Vaisala’s HVAC sensors Best quality indoor air with Vaisala's HVAC sensors Infosys is the second largest Indian IT consulting company with 200,000 plus employees and... Read more Success Story Vaisala equips the New Children´s Hospital in Helsinki Vaisala was the honorary in-kind donator for the New Children’s Hospital that was built in Helsinki. The construction commenced already in 2014... Read more Success Story Vaisala CARBOCAP® Sensor for measuring carbon dioxide The CARBOCAP® story began in 1992, when micromechanical sensors were being intensively researched at Vaisala. The groundbreaking idea of... Read more Need support? Sign up for news Contact us
Success Story Why climate control systems provider Damatex chose Vaisala sensors for their greenhouse customers Climate control systems are revolutionizing greenhouses, HVAC and building automation. Read how Damatex uses Vaisala technology to achieve... Read more
Success Story Infosys monitors indoor air with Vaisala’s HVAC sensors Best quality indoor air with Vaisala's HVAC sensors Infosys is the second largest Indian IT consulting company with 200,000 plus employees and... Read more
Success Story Vaisala equips the New Children´s Hospital in Helsinki Vaisala was the honorary in-kind donator for the New Children’s Hospital that was built in Helsinki. The construction commenced already in 2014... Read more
Success Story Vaisala CARBOCAP® Sensor for measuring carbon dioxide The CARBOCAP® story began in 1992, when micromechanical sensors were being intensively researched at Vaisala. The groundbreaking idea of... Read more