Vaisala GMW94R CO2+RH+T Wall Mount Transmitter 4-20 mA for Demanding HVAC and Green Building Projects

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Vaisala GMW94R CO2+RH+T Wall Mount Transmitter 4-20 mA for Demanding HVAC and Green Building Projects
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Overview

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 GMW94R 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.

The model GMW94R 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% Current outputs, 0...20mA or 4...20mA
  • Hidden display
  • Traceable calibration certificate

For more information, please see Data Sheet

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