FIELD: physics.
SUBSTANCE: gas analyser has a laser radiation source with a device for splitting radiation flux into two identical beams, a chamber for the analysed mixture and a working channel receiver, arranged in series on the path of one beam; a chamber with "zero" gas and a comparison channel receiver lying on the path of the other beam. Receivers lying on the path of two separate beams are in form of identical metal plates made from an alloy which has undergone martensitic transformation in a given measurement temperature interval, placed on dielectric substrates with low thermal-conductivity coefficient and connected to corresponding inputs of the device for measuring electrical resistance which is interfaced with the control, reception and data processing unit.
EFFECT: invention widens spectral range of the gas analyser towards the long-wave region and increases its reliability.
1 dwg
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