| 摘要 |
PURPOSE:To prevent the interruption of gas analysis and to make possible analysis with high accuracy by using two units of gas chromatographs A, B and repeating automatically the analysis of gaseous sample and the operation for making a calibration curve. CONSTITUTION:The respective cylinders of standard gases I, II and carrier gas are connected respectively to a piping A. The feed parts of the other carrier gas and sample gas 7 are connected respectively to a piping B. The piping A, B are respectively connected in parallel via a selector valve 1 to the gas chromatographs A, B, and the outputs therefrom are inputted to a calculator 2. The calculator 2 operates the valve 1 via a converter 3 to change over the flow from the piping A to the gas chromatograph A and from the piping B to the gas chromatograph B to the flow from the piping A to the gas chromatograph B and from the piping B to the gas chromatograph A. On the other hand, the signals from setters A(4) and B(5) are inputted to the calculator 2 and the outputs thereof are dispalyed on a display device 6. The interruption of the gas analysis is thus obviated. |
