Apparatus for spectroscopically analysing a gas

G - Physics – 01 – N

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G01N 21/35 (2006.01) A61B 5/083 (2006.01)

Patent

CA 2645445

The invention relates to an apparatus for spectroscopically analysing a gas, said apparatus having at least one radiation source (1), at least one detection apparatus (12; 20), at least one sample chamber (13) and a system of optical elements (4; 5; 6; 7; 9; 10; 11; 18; 19) which is intended and set up to direct at least part (3b) of the radiation (3) emitted by the radiation source (1) through the sample chamber (13) onto the detection apparatus (20), wherein the sample chamber (13) is used to hold a gaseous sample which contains the gas to be analysed, and wherein the apparatus is configured in such a manner that the sample can continuously flow through the sample chamber (13), and means (16) are provided for the purpose of determining the pressure and/or the volume and/or the concentration of the sample in the sample chamber (13). The invention also relates to a corresponding method for spectroscopically analysing a gas.

L'invention concerne un dispositif d'analyse spectroscopique d'un gaz comprenant au moins une source (1) de rayonnement, au moins un dispositif (12 ; 20) de détection, au moins une chambre (13) à échantillon et un système d'éléments (4 ; 5 ; 6 ; 7 ; 9 ; 10 ; 11 ; 18 ; 19) optiques qui est prévu et organisé pour dévier au moins une partie (3b) du rayonnement (3) émis par la source (1) de rayonnement à travers la chambre (13) à échantillon sur le dispositif (20) de détection, la chambre (13) à échantillon servant à accueillir un échantillon gazeux qui contient le gaz à analyser et le dispositif étant configuré de telle sorte que l'échantillon peut s'écouler continuellement à travers la chambre (13) à échantillon et que des moyens (16) sont prévus pour déterminer la pression et/ou le volume et/ou la concentration de l'échantillon dans la chambre (13) à échantillon. L'invention concerne de plus un procédé correspondant d'analyse spectroscopique d'un gaz.

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