G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/03 (2006.01) G01N 21/15 (2006.01) G01N 21/31 (2006.01)
Patent
CA 2446122
The invention relates to a method and a device for measuring a concentration of at least one component in a process gas by laser (2a), whereby the beam of the laser (2a) pass through a volume (1) containing the process gas. The invention is characterised in that the beam extends partially in a free manner through the process gas and partially in an isolated manner with respect to the process gas. Only one part of the beam which extends freely through the process gas is designated as a measuring section (4) and is taken into account for laser-gas spectroscopic measurement of the a concentrations of gases.
L'invention concerne un dispositif et un procédé de mesure d'une concentration d'au moins un composant d'un gaz de processus au moyen d'un laser (2a), le faisceau du laser (2a) traversant un volume (1) contenant le gaz de processus. La présente invention est caractérisée en ce que la trajectoire du faisceau s'étend partiellement de manière libre au travers du gaz de processus et partiellement de manière isolée du gaz de processus. Seule la partie du faisceau s'étendant librement au travers du gaz de processus est désignée en tant que section de mesure (4) et sert à la mesure par spectroscopie laser/gazeuse de concentrations de gaz.
Kirby Eades Gale Baker
Linde Aktiengesellschaft
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