CH4 sensor SJH

NDIRinfraredminiature

The miniature NDIR CH4 sensor SJH is based on NDIR technology that is superior to thermal catalysis and heat conduction technology, and can detect 0 to 100% methane (CH4) concentration. It has the advantages of convenient operation, accurate measurement, reliable operation, simultaneous output of voltage and serial port, and dual beam design. To meet the different requirements of industrial field and laboratory measurement, it is widely used in gas detection and analysis in petrochemical, chemical, coal, medical, laboratory and other fields. Features: NDIR technology, with long life and full measurement range Meet the explosion-proof grade Ex iaⅡC T4 Ga Internal full range temperature compensation Diffusion sampling, stable performance High precision, high resolution 0.01% Small size and fast response Antiseptic Easy to install and reduce maintenance Compatible with digital and analog voltage signal output Applications ▪ Mine, metallurgy, liquefied gas station, spray paint, petroleum, fuel gas transport, etc ▪ Used in gas leakage detecting equipment in family and industry, are suitable for CH4, LNG ▪ Gas concentration meter ▪ Organic solvents like gasoline, ketone, benzene, etc ▪ Leakage alarming detectors of combustible gases Specifications • Measurement range 0-5%vol, 0-100%vol • Measurement method NDIR • Measurement range CH4: 0-5%vol (0-100%LEL),0-100%vol • Warm up 30s • Response time T90 ＜25s at 20℃ • Working voltage 3.5-5.5v • Working current 75-80mA • Output voltage 0-4-2v/TTL • Digital signal format RS 232 data bit:8;stop bit:1; check bit: null • Baudrate 9600 bps • Working temperature -40℃to 70℃ • Dimensions ￠20*19mm (except pin)