Patent ID: 8125626
Filing Date: 2012-02-28
Classification: G01N

Abstract:
1. A gas analyzer adapted to operate in an open-path configuration or a closed-path configuration, the gas analyzer comprising: a) a detector section including a detector and a first optical window; b) a source section including a light source and a second optical window, wherein the first and second optical windows provide an airtight seal for components within the source and detector sections; c) a support structure coupling the detector section with the source section and forming an open air optical path measuring region that begins at the source section and ends at the detector section; and d) a gas cell adapted to be removably coupled with the support structure, the gas cell including a housing structure defining a closed-path gas flow channel, wherein light from the light source passes through the gas flow channel to the detector section when the gas cell is coupled with the support structure; and wherein in is first configuration with the gas cell removed, the gas analyzer is operable as an open-path gas analyzer to analyze gases in the open air optical path measuring region, and wherein in a second configuration with the gas analyzer coupled with the support structure, the gas cell is operable as a closed-path gas analyzer to analyze gases in the gas flow channel.