Patent ID: 6397660
Filing Date: 2002-06-04
Classification: G01N

Abstract:
A gas analyzing apparatus comprising a separator such as a gas chromatograph or the like for separating components and an analyzer such as an atmospheric-pressure ionization mass spectrometer or the like for analyzing gas components, said gas analyzing apparatus further comprising:an analyzer introduction passage for directly introducing a sample gas supplied from a sample gas source into said analyzer via an analyzer introduction valve; a separator introduction passage diverging from a first side passage of said analyzer introduction valve for introducing said sample gas into said separator via a separator introduction valve; a separator flowing-out passage for introducing at least some of said sample gas flowing out from said separator into a second side passage of said analyzer introduction valve via a separator flowing-out valve; and a valve for blocking or passing carrier gas supplied from a carrier gas source; wherein, when said analyzer introduction valve and said blocking or passing carrier gas valve are operated to be opened, said separator introduction valve and said separator flowing-out valve are connectively operated to be closed, and when said analyzer introduction valve and said blocking or passing carrier gas valve are operated to be closed, said separator introduction valve and said separator flowing-out valve are connectively operated to be opened.