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Gas analyzer system

  • US 7,835,005 B2
  • Filed: 04/30/2008
  • Issued: 11/16/2010
  • Est. Priority Date: 02/21/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • generating an optical signal;

    at each of multiple frequency bands, measuring an intensity of the optical signal after passage of the optical signal through a sample gas having multiple types of gases that absorb the optical signal in a same frequency band; and

    detecting concentrations of the multiple types of gases in the sample gas based on absorption of the optical signal at the multiple frequency bands;

    wherein detecting concentrations of the multiple types of gases in the sample gas includes;

    utilizing absorbance measurements of the optical signal at a first frequency band and a second frequency band to calculate a concentration of a first gas present in the sample gas; and

    utilizing absorbance measurements of the optical signal at the first frequency band and the second frequency band to calculate a concentration of a second gas present in the sample gas.

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