Patent ID: 9739705
Date: 2017-08-22
CPC Classifications: G01N

Claim:
1. An absorption spectroscopy system comprising: an optical source for transmitting an incident beam; a gas cell assembly having: an absorption spectroscopy analyzer in electronic communication with the gas cell assembly, the analyzer comprising: a controller in electronic communication with the absorption spectroscopy analyzer and the gas cell assembly, wherein the controller receives control signals from the absorption spectroscopy analyzer for operating the gas cell assembly; a sampling tube having one end coupled to the inlet, and the sampling tube being inserted into a vent opening of the gas source; and a multi-directional valve mounted between the sampling tube and the inlet, wherein the multi-directional valve is operable by the controller in a first position to provide a path between the gas source and the inlet, and in a second position to provide a path between an external gas line and the gas source.