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Infrared gas detector

  • US 7,132,657 B2
  • Filed: 02/09/2004
  • Issued: 11/07/2006
  • Est. Priority Date: 02/09/2004
  • Status: Active Grant
First Claim
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1. A gas detector comprising:

  • at least one source of infrared radiation;

    at least two analytical detectors, each analytical detector adapted to provide an output signal indicative of a first gas of interest, said analytical detectors being positioned to receive radiation from said source of radiation, a first of said at least two analytical detectors being positioned to receive radiation of a first predetermined wavelength, and a second of said at least two analytical detectors being positioned to receive radiation of said first predetermined wavelength;

    at least one reference detector adapted to provide an output signal independent of the first gas of interest;

    a means for summing said output signals detected by said at least two analytical detectors; and

    a sample chamber for receiving a gaseous sample,an optical path from said source of infrared radiation to said analytical detectors passing through said sample chamber.

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