... automatic baseline reviseMeasuring scope: steel cylinder Regulator Quickly on-site logging analysis One machine with double functions: 25 sec isolates C1~C5 ... , examined. Components O2, N2, CH4, CO, CO2 and C2 flow out from DC200 and flow into chromatographic column PQ, and when components ... V2 from ON to OFF. Before CO2 and C2 flowing out, O2, N2, CH4, CO flow into chromatographic column 13X, switch ...