Patent ID: 7764379

Claim:
A system of gas property monitoring, comprising: a gas cell for containing a gas of interest; a semiconductor tunable laser spectroscopy system for generating a tunable signal that is transmitted through the gas of interest in the gas cell and detecting the tunable signal after transmission through the gas of interest to determine a spectral response of the gas of interest, wherein a spectral width of the tunable signal from the semiconductor tunable laser spectroscopy system is too broad to accurately detect a concentration of diatomic hydrogen due to associated narrow spectral lines of the diatomic hydrogen; a hydrogen sensor for detecting a concentration of the diatomic hydrogen in the gas of interest, and an analyzer for relating the spectral response of the gas of interest in combination with the detected concentration of the diatomic hydrogen to an energy content of the gas of interest, wherein the analyzer uses the detected concentration of diatomic hydrogen to compensate the energy content determined with respect to the spectral response of the gas of interest.