The invention relates to a device and a method for the quantitative gas analysis
in which the gas analysis of a sample atmosphere is implemented by means of a sensor
device, a diffusion seal being produced between the sample atmosphere contained
in a sample system and a measuring chamber and the gas analysis of the sample atmosphere
which is diffused into the measuring chamber being implemented with the sensor
device, the sensor head (5) being able to be coupled to the measuring adapter
(4) and the radiation source (16) and the detector device (17)
being fixed to the measuring chamber (9) in a defined orientation and the
measuring radiation (24) emitted from the radiation source (16) traversing
at least once through the measuring chamber (9) and being detected by the
detector device (17) after leaving the measuring chamber (9).
