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Sidestream gas sampling system with closed sample circuit

  • US 7,748,280 B2
  • Filed: 06/29/2007
  • Issued: 07/06/2010
  • Est. Priority Date: 07/06/2006
  • Status: Active Grant
First Claim
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1. A method for measuring a concentration of one or more components of a gas sample taken from a mainstream flow of gas, the method comprising acts of:

  • (a) providing a first assembly adapted to communicate a gas sample from a gas sampling site to a gas measuring site, the first assembly including components that contact the gas sample during use;

    (b) providing a second assembly that is external to the first assembly at all times during use such that all mechanical portions of the second assembly do not contact the gas sample;

    (c) coupling the first assembly to the second assembly;

    (d) carrying a gas sample from the gas sample site to the gas measuring site using a first component of the first assembly;

    (e) using a first component of the second assembly to perform at least one of the following functions;

    obtaining flow information regarding a flow of the gas sample and obtaining pressure information regarding a pressure of the gas;

    (f) measuring a characteristic of one or more components within the gas sample using a second component of the second assembly; and

    (g) integrating one or more elements into the first assembly that enables at least one of the obtaining flow information regarding the flow of the gas sample and the obtaining pressure information regarding the pressure of the gas.

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