Indoor Air Quality: CO2 vs TVOC

This chart shows the difference in sensor response to VOC’s produced by human respiration alone and with alcohol present.

CO2 blue, TVOC green.

Further illustration of the sensitivity of the sensor to alcohol is seen at events taking place on the 3rd floor where alcohol was served and TVOC response ranged from 5000 to 7000. The sensor is located on the 3rd floor throughout the period shown.