GAS ANALYZER

PROBLEM TO BE SOLVED: To provide a gas analyzer having furthe increased analysis accuracy of a gas component in a metal. SOLUTION: The gas analyzer 1 for analyzing a prescribed composition component included in a gas component in a casting 2 includes a gas extraction part 3 for extracting the gas component in the casting 2 by heating the casting 2 in the depressurized state, a gas amount detection part 4 for detecting a gas amount of the gas component extracted by the gas extraction part 3, a composition component detection part 5 for detecting steam gas included in the gas component and another general composition component in parallel, and an operation control part 6 for operating a quantitative evaluation value regarding a prescribed composition component included in the gas component by performing a prescribed operation processing based on the gas amount detected by the gas amount detection part 4 and on a detection value detected by the composition component detection part 5. COPYRIGHT: (C)2010,JPO&INPIT