Portable Gas Detector

We are offering portable gas detector. (chinacoal08)specifications
multi gas detector 
1 combustion sensor and 3 electrochemical sensors 
sound and light and vibration alarm 
multi gas detector  is a compact portable gas detector with a large lcd. It can monitor co, h2s, o2 and combustible gas simultaneously. The instrument features two instant alarms with audiovisual and vibratory indicators, rechargeable battery, and simple use.
 
 
main partameter:
 
 
operating & storage environment temperature: -20°c~55°c (-4f~122f)
humidity: 5%-95% (relative humidity non-condensing)
pressure: 95~110kpa
alarm threshold (two-stage) there may be regional variations, users can set up the value based on practical situation.
Detecting range combustible gas: 0~100%lel (lowhigh alarm point: 25% lel50%lel)
o2: 0~30% vol                       (lowhigh alarm point: 18.5% vol23.5%vol)
co: 0~500 ppm                        (lowhigh alarm point: 35 ppm70 ppm)
h2s:0~100 ppm                        (lowhigh alarm point: 10 ppm20 ppm)
other gas types: referring to the gas parameter list below
four transducers combustible gas: catalytic combustion sensor
o2 h2s co: electrochemical sensor
alarm type low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm
acoustic alarm variable-frequency pulse alarm which can reach volume of 95db in a distance of 1 foot (0.3 meter)
visual alarm two red led omnibearing visible glitter alarm
vibration alarm pulsant signals alert the gas alarm or any other alarm status
display alphanumeric large lcd screen displays the real time gas concentration and alarm stage