| 摘要 |
An online gas chromatograph (100) is provided. The online gas chromatograph (100) includes a sample inlet (104) and at least one chromatographic column operably coupled to the sample inlet (104). At least one valve (60) is interposed between the sample inlet (104) and the at least one chromatographic column. A detector (128) is fluidically coupled to the at least one chromatographic column. A controller (126) is coupled to the detector (128) and to the at least one valve (60), the controller is configured to control flow from the sample inlet (104) through the chromatograph using the at least one valve (60). The controller (126) is configured to generate a plurality of sequential calibration cycles (302, 304, 306), where each calibration cycle (302, 304, 306) has a calibration gas purge operation (316, 323, 325). The first calibration gas purge operation (316) lasts longer than the second calibration gas purge operation (323). |
