Gas sensor

Details Gas sensor Gas sensor

2007-08-17

2009-12-22

Evans, F. L (Department: 2877)

Optics: measuring and testing

With plural diverse test or art

C356S432000, C356S437000, C356S073000, C250S339130

Reexamination Certificate

active

07636153

ABSTRACT:
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. A laser beam used for laser spectrometry is sent 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 consumption, so that the device can be produced 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.

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European Search Report for corresponding Application No. 07 00 3553 dated Jun. 24, 2007.

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