The invention relates to a system and {HEAD ~ method} for detecting {TAIL ~ one or more gases} or gas mixtures and for measuring the concentration of one or more gases or gas mixtures, said system comprising at least a light source, a sample space, a reference chamber, and a measuring chamber 
for detecting
The invention relates to a system and { HEAD ~ method } for detecting { TAIL ~ one or more gases } or gas mixtures and for measuring the concentration of one or more gases or gas mixtures , said system comprising at least a light source , a sample space , a reference chamber , and a measuring chamber
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH