Patent ID: 7841769

Claim:
Article of manufacture in combination with a sensing device having an integrated heating element, the article of manufacture comprising a storage medium having a machine-executable computer program encoded therein to monitor a gas feedstream utilizing the sensing device having the integrated heating element, the combination comprising: the sensing device; the integrated heating element; and the machine-executable computer program, wherein the machine-executable computer program comprises: a first code to monitor electrical resistance of the integrated heating element; a second code to determine a temperature of the integrated heating element based upon the electrical resistance; a third code to determine a gas temperature within a shield of the sensing device based upon the temperature of the integrated heating element, said third code comprising an unknown input observer model configured to estimate the gas temperature within the shield of the sensing device based upon the temperature of the integrated heating element; and a fourth code to determine a temperature of the gas feedstream based upon the gas temperature within the shield of the sensing device.