Gas sensor arrangement and measuring method for improving long-term stability
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United States of America Patent
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Jul 17, 2007
Grant Date -
Nov 16, 2006
app pub date -
Apr 26, 2006
filing date -
May 13, 2005
priority date (Note) -
Expired
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Abstract
A gas sensor arrangement comprises a gas measuring chamber containing a gaseous analyte. First and second radiation sources emit radiation. The first radiation source operates as a measuring radiation source and the second radiation source operates as a reference radiation source. The radiation is directed through the gas measuring chamber and into a detector that generates an output signal depending on the presence of the gaseous analyte. A control device evaluates the output signal from the detector. The control device interchanges the operation of the first and second radiation sources after a predetermined service life.
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