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Method for measuring chemical emissions

  • US 6,553,810 B2
  • Filed: 11/13/2001
  • Issued: 04/29/2003
  • Est. Priority Date: 09/28/1999
  • Status: Expired due to Term
First Claim
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1. A method for measuring chemical emissions to the atmosphere, the method comprising:

  • drawing air directly into a housing at a low flow rate in a survey mode, whereby one of a presence and an absence of a chemical emission is detected;

    drawing air directly into the housing at a high flow rate in a quantification mode upon detection of the presence of said chemical emission; and

    detecting the concentration of the chemical emission within the housing.

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