
All buildings rely upon some form of ventilation either natural or forced to remove the carbon dioxide gas, water vapour and heat exhaled by people occupying that building. If this ventilation is inadequate it is common for it to be described as the the room becoming 'stuffy'.
Indoor air quality is the term used to name this effect and it has been shown that by measuring parameters such as air temperature, its humidity and carbon dioxide content a quantitative value of air quality can be determined.
The Gas Data GFM100 series instruments can be fitted with sensors to measure a number of indoor air quality (IAQ) parameters. In particular, the GFM101 fitted with a low range infra red carbon dioxide (CO₂) analysis module will determine the levels of this gas down to 1 ppm resolution. By choosing the GFM121 or GFM130 models then other parameters such as carbon monoxide (CO) and temperature can be measured simultaneously.