Non-dispersive infrared gas analyzer

Details Non-dispersive infrared gas analyzer Non-dispersive infrared gas analyzer

2009-02-15

2011-10-25

Kim, Kiho (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

08044353

ABSTRACT:
The invention relates to a NDIR-gas analyser comprising an infrared radiation source (1), a measuring vessel (3) containing a gas mixture (4) having a measuring gas component (5) that is to be detected, and a detector device (7) that is arranged behind the measuring vessel that can detect the influence of ageing of the radiation source (1) and optionally dirt deposits in the optical radiation path without interrupting measuring. According to the invention, at least one optopneumatic detector (15) is arranged in the beam path of the radiation source (1), said detector being filled with any gas (16) when arranged between the radiation source (1) and the measuring vessel (3). The concentration of measuring gas components is lower in the detector (15) than in the measuring vessel (3) if filled with the measuring gas components, and said detector is filled with a gas when arranged between the measuring vessel (3) and the detector device (7), the absorption spectrum of the detector being outside of the spectrum of the measuring gas components (5) and other transversal gases in the gas mixture (4). The measuring signal (12) of the detector device (7) is corrected by the detector signal (21) generated by the detector (15).

REFERENCES:
patent: 2924713 (1960-02-01), Liston
patent: 3215832 (1965-11-01), Madsen et al.
patent: 3770974 (1973-11-01), Fertig
patent: 3953734 (1976-04-01), Dimeff
patent: 3968370 (1976-07-01), Luft
patent: 4355233 (1982-10-01), Warnke et al.
patent: 4467435 (1984-08-01), Warnke et al.
patent: 5321266 (1994-06-01), Weinel
patent: 2008/0011952 (2008-01-01), Fabinski et al.
patent: 1 109 418 (1961-06-01), None
patent: 1 204 430 (1965-11-01), None
patent: 2 332 288 (1974-01-01), None
patent: 2 400 221 (1975-07-01), None
patent: 26 38 522 (1978-03-01), None
patent: 35 29 482 (1987-02-01), None
patent: 9 014 162 (1990-12-01), None
patent: 44 03 763 (1995-08-01), None
patent: 195 40 489 (1997-04-01), None
patent: 10 2004 007 953 (2005-09-01), None
Jacek et al., “Frequency characteristic of an optopneumatic detector,” 2006, Molecular and Quantum Acoustics, vol. 27, pp. 141-147.

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