Measuring apparatus for gas analysis

Details Measuring apparatus for gas analysis Measuring apparatus for gas analysis

G - Physics

01

N

G01N 21/25 (2006.01) G01N 21/27 (2006.01) G01N 21/31 (2006.01) G01N 21/59 (2006.01)

Patent

CA 2164249

A spectrometric gas measurement apparatus for the determination of the presence and/or concentration of gases in a spatial region (3) has a spectrometric measurement head (6) which transmits into the spatial region (3) measurement radiation having the spectral ranges necessary for the determination of the gases. Furthermore, a reflector (21) is provided at the spatial region (3) which reflects the light which is passed through at least a part of the spatial region (3) back to the measurement head where it is split up spectrally in an analyser and then supplied to a photoreceiver arrangement. A measurement tube (1) extending in the direction of light propagation is provided in the spatial region (3) through which the measurement light passes. The measurement tube (1) has a transverse throughflow opening (10), is closed at the end remote from the measurement head (6), accommodates the retro-reflector and is also supplied at both ends of the transverse throughflow opening (10) with flushing air which stands at a slight excess pressure relative to the spatial region. A reference tube (23) with an audit cell (12) is inserted in front of the measurement tube (1).

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