Gas sensor arrangement

Details Gas sensor arrangement Gas sensor arrangement

2005-01-18

2005-01-18

Williams, Hezron (Department: 2856)

Measuring and testing

Gas analysis

By thermal property

C073S024020, C073S024030, C250S565000

Reexamination Certificate

active

06843102

ABSTRACT:
A gas sensor configuration comprises a radiation-emitting radiation device, a gas measuring chamber, a detector unit and an evaluation device. A measuring gas that contains at least one gas component is present in the gas measuring chamber. The evaluation device detects the gas component and/or its concentration depending on the output signal of the detector unit. The radiation emitting device comprises at least one source that emits a measuring radiation and at least one reference radiation source, the latter being switched on periodically to measure the aging state of the source that emits the measuring radiation. The evaluation device detects the aging of the source that emits the measuring radiation on the basis of deviations with respect to the output signals of the detector unit when the reference radiation source and the source that emits the measuring radiation are switched on, and, if necessary, compensates for the aging.

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International Preliminary Examination Report; PCT/EP00/04838, 2001.

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