GMW94R CO2, Temperature, and Humidity Sensor for demanding HVAC, with Certificate, Current Loop - Vaisala Online Store

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GMW94R CO2, Temperature, and Humidity Sensor for demanding HVAC, with Certificate, Current Loop

The Vaisala GMW94R and GMW94RD Carbon Dioxide, Temperature, and Humidity Transmitters are intended for demand controlled ventilation and green buildings. Both transmitters have a 3-wire, current output.

The GMW90 Series Transmitters are suitable for LEED projects as the accuracy is better than the required ±75 ppm even after 5 years of use. After 5 years the transmitters can be easily calibrated in the field.

The GMW90 Series Carbon Dioxide and Temperature Transmitters use proprietary Micro-Electro-Mechanical System (MEMS) technology for measuring carbon dioxide. The sensor’s continuous reference measurement enables reliable and accurate readings, outstanding long-term stability, extended lifetime, and minimal maintenance.

This wall-mounted transmitter is easy to install and it has very low maintenance requirements. Field calibration can be done quickly against a GM70 CO2 meter, against calibration gas bottles with straightforward trimmer adjustment or by exchanging intelligent GM10 CO2 measurement modules that come with a traceable calibration certificate. The display is always included for easy calibration.

See all GMW90-series CO2 transmitters

The transmitter has user exchangeable measurement modules, which can be ordered as spare parts. The module is delivered with a calibration certificate.

Models

  • GMW94R: Hidden display
  • GMW94RD: Visible display

The package includes:

  • Transmitter
  • Quick guide
  • Traceable calibration certificate

GMW94R CO2, Temperature, and Humidity Sensor for demanding HVAC, with Certificate, Current Loop
GMW94R with a solid cover and GMW94RD with a display opening.
Standard delivery time for single unit: 1 week
About delivery times »
Warranty: 24 months
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Detailed information

Measurement parameter(s)Carbon dioxide
Temperature
Humidity
Measurement range0 ... 2000 ppm CO2
-5 ... +55 °C (+23 ... +131°F) T
Measurement accuracyat +20 … +30 °C (+ 68 … + 86 °F) ± (30 ppm + 2 % of reading) CO2
at +20 ... +30 °C (+68 ... +86 °F) ±0.5 °C (± 0.9 °F) T
Operating temperature-5 ... +55 °C (+23 ... +131 °F)
Operating voltage18 … 35 VDC, 24 VAC ± 20% 50/60 Hz
Analog outputs0/4 ... 20 mA, 2 and 3 channel models available
Housing classificationIP30
Links See full specifications on Vaisala.com
Download user guides and other product documents on Vaisala.com


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