Patent ID: 6166383
Filing Date: 2000-12-26
Classification: G01N

Abstract:
A non-dispersive infrared gas analyzer for determining the carbon dioxide, carbon monoxide, hydrocarbon, and nitrogen oxide levels in a sampled gas, comprising:a first measuring cell that can be filled with the sampled gas and is traversed by an infrared measuring beam;a radiation-transparent optopneumatic detector containing carbon dioxide, arranged in the direction of the beam downstream from the first measuring cell;a radiation-transparent optopneumatic detector containing carbon monoxide, arranged in the direction of the beam downstream from the detector containing carbon dioxide;a second measuring cell that can be filled with the sampled gas, arranged in the direction of the beam downstream from the detector containing carbon monoxide;at least one detector for detecting hydrocarbon arranged on the second measuring cell; andat least one detector for detecting nitrogen oxide arranged on the second measuring cell.