Patent ID: 9267881
Filing Date: 2016-02-23
CPC Classification: G01N

Claim Text:
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 between the detector and the light source; and d) a gas cell adapted to be removably coupled with the support structure between the source and detector sections, the gas cell including a housing structure having internal surface(s) defining a closed-path gas flow channel, wherein the internal surface(s) are metal plated; and wherein in a first configuration with the gas cell separated from the support structure, 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 cell coupled with the support structure between the source and detector sections, light from the light source passes through the gas flow channel to the detector section and the gas analyzer is operable as a closed-path gas analyzer to analyze gases in the gas flow channel.