Patent ID: 8500442
Filing Date: 2013-08-06
Classification: F23N,G01N

Abstract:
1. A chemical analysis method for determining the concentration of carbon monoxide, gaseous water, oxygen and gaseous hydrocarbon in a combustion gas, comprising the steps of: (a) directing wavelength modulated light from a single tunable diode through beam shaping optics laser at a wavelength in the range of from 2 to 2.5 micrometers through the combustion gas to a light detector to produce an absorption profile of the combustion gas and performing an oxygen measurement using an oxygen analyzer (b) digitizing the absorption profile of the combustion gas; (c) storing the digitized absorption profile in a digital computer; (d) processing the digitized absorption profile in the digital computer to produce an output from the computer indicative of the concentration of carbon monoxide, gaseous water and gaseous hydrocarbon in the combustion gas.