Carbon dioxide measuring systems (NDIR)

The infrared measuring system detects the carbon dioxide content of the ambient air and thus indoor air quality (IAQ) fast and precisely. It contains a novel infrared measuring system functioning basically like a conventional two-beam photometer. Since material and construction of the sample cell are novel, and the measured signals are evaluated and processed according to a new digital algorithm, the infrared measuring system is light-weight, compact, in normal applications maintenance-free and long-term stable. The infrared measuring system detects the absolute carbon dioxide content of the ambient air (partial pressure), monitors itself constantly and signals malfunctions of its hard and software. The whole measuring range is linear and goes from 0 to 3.000 ppm CO2 up to 5 vol% CO2. The carbon dioxide measuring systems are available in various designs for window-ventilated rooms, for automated buildings and industrial applications.