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Expert in breath analysis, Olythe developed OCIEngine an infrared spectrometer to measure VOC in the human breath. This sensor is specific to analyze a particular molecule such as ethyl alcohol molecules.
The measuring chamber of the sensor is crossed by infrared radiation. When the exhaled air is introduced into this chamber, the molecules of interest absorb a part of the radiation, and reduces the intensity of the optical signal. The concentration of the gas can therefore be deduced according to Beer-Lambert’s physical law.