Equipment for the spectroscopic measurement of gas

Details Equipment for the spectroscopic measurement of gas Equipment for the spectroscopic measurement of gas

G - Physics

01

J

G01J 3/02 (2006.01) G01J 3/26 (2006.01) G01J 3/30 (2006.01) G01J 3/36 (2006.01) G02B 5/28 (2006.01) G01J 3/12 (2006.01) G01N 21/35 (2006.01)

Patent

CA 2149663

2149663 9411713 PCTABS00032 In the present equipment for spectroscopic measurement of a gas in a gas mixture, for example a gas in the atmosphere, a filter device is used to filter out one spectral line from other spectral lines belonging to other gases and the transmitted light is detected by a detector which gives a signal to devices for calculating and displaying the measurement data. The filter device consists of an interference filter (1), at least one fixed etalon (2) and a Fabry-Perot interferometer (1). In a preferred design, the filter can be fitted with two fixed etalons instead of one.

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