Vaisala GMW93RA CO2+RH+T Wall Mount Transmitter 0-10 V LED for Demanding HVAC and 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.

Features:

• Measured parameters: carbon dioxide, temperature, and humidity (optional)
• Superior long-term stability with the latest-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 field bus communication (Modbus RTU)

Vaisala GMW90 Series Wall-Mount CARBOCAP® Transmitters are designed for high performance HVAC, demand controlled ventilation (DCV), and indoor air quality (IAQ) monitoring. CO2 measurement is based on Vaisala's unique, second-generation CARBOCAP® technology that enables exceptional stability.

The internal reference in the CO2 sensor guarantees the best stability and operation also in constantly occupied buildings without frequent readjustments (eliminates need for Automatic Background Calibration ABC algorithm). The GMW93RA uses the Vaisala HUMICAP180R humidity sensor for superior long term stability. The sensor is also insensitive to dust as well as to  most chemicals.  

These transmitters include user exchangeable measurement modules, which can be ordered as spare parts and are delivered with a calibration certificate. All GMW90 Series models have a display for easy calibration. The model GMW93RD features a visible display for easy calibration.

The model GMW93RA includes the following:

• CO2 Measurement 0 … 5000 ppm, analog outputs configured for 0...2000 ppm
• Temperature Measurement -5 ... +55 °C (+23 ... +131°F)
• Relative Humidity Measurement 0...95%
• Voltage outputs, 0...5 V or 0 … 10 V
• Always visible display
• Visual CO2 level indication LEDs (green <800 ppm, yellow 800 … 1200 ppm, red >1200 ppm)

A standard ISO 9001 factory calibration certificate is included in delivery.

For more information, please see Data Sheet