G - Physics
01
N
G01N 21/39 (2006.01) G01J 3/28 (2006.01) G01N 29/34 (2006.01)
Patent
CA 2621757
The invention concerns a combined gas sensor device allowing the measuring of the concentration of a gas by tunable diode laser spectrometry as well as by resonant photo-acoustics within one housing The core of the invention is, to send a laser beam used for laser spectrometry across the openings of a measuring cell usually used for resonant photo-acoustic determination. Thus, both measuring principles use the same gas sensing module with a minimum of space consump-tion, so that the device can be produces with minimum dimensions. Further, a common opto-electronics and electronics platform can be used which reduces the overall costs of such a combined gas sensor.
Kohli Markus
Seifert Andreas
Willing Bert
Ir Microsystems Sa
Leister Process Technologies
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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