GM20 Series Carbon Dioxide Transmitters for Demand Controlled Ventilation Applications

Product Description

​ The duct-mounted Vaisala CARBOCAP® Carbon Dioxide Transmitter Series GMD20 are specially designed for Demand Controlled Ventilation (DCV). They are easy to install and require no maintenance. The recommended calibration interval is five years.

  • Versatile transmitters
  • Incorporates the Vaisala CARBOCAP® sensor – the silicon based NDIR
  • Excellent long-term stability
  • Negligible temperature dependence
  • Easy to install
  • Five year recommended calibration interval
  • Warranty time 2 years

GM20 series includes the following products:

  • GMD20 duct-mount transmitter
  • GMD20(D) duct-mount transmitter (with display

Versatile Transmitters The GMD20 series transmitters can be used independently, or incorporated into building energy management systems. The series consists of duct mount units GMD20 and GMD20D. Version D has a display. The duct units’ compact sensor head design fits inside the ventilation duct, eliminating the risk of leaking gaskets and measurement errors. In addition to the standard 0 … 20 mA, 4 … 20 mA and 0 … 10 V outputs, there are two other options: one LonWorks® interface and a relay output. The relay output is standard with the display units. Improve Indoor Air at Minimal Energy Costs The use of the GMD20 series transmitters ensures the best possible control of air quality and results in considerable savings in energy consumption, maintenance and recalibration costs.