Q.E.D. Environmental Systems VIASENSOR G100 series gas analyzers measure CO2 levels and indoor air quality. Used for a variety of food and beverage applications, including brewery fermentation processes and CO2 gas lines for carbonated soda, the units feature stability with built-in moisture removal, user calibration on the analyzer and large displays. They offer storage for 1,000 readings and are available with options such as dual temperature, oxygen and relative humidity capabilities.