... ~3hours Communication functionLAN TCP:/IP Agreement port open USB2.0RS232 Gas sampling requirementsSample flow: 10~100ml/minSample filter: 2μ Min ... for many valves and columns, TCD system analysis H2, O2, CH4, CO, C2H6, CO2, H2S, C2H4, C3H8, C3H6, C4, C5, C6+ and ect ... after sweeping clean, switch V1 from OFF to ON, carrier gas 1 takes sample into analytical column DC200, before components flowing ...