... system is used one-to-one monitoring mode, the input signal for 4-20mA. Can detect gas: combustible gas and ... , chemical industry, oil, gas and automobile industry, etc.· Input signal for 4-20mA· automatic calibration, automatic tracking sensors ageing, automatic ... up to hundreds of assembly realize gas monitor.· Capacity: 8 channel· Input signal: 4-20mA· Monitoring type: %LELPPM\%VOL· Display: LED ...