GJD100G High concentrations of gas sensors

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GJD100G High concentrations of gas sensors
Posting date : Jan 03, 2014
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GJD100G High concentrations of gas sensors GJD100G High concentrations of methane sensor (hereinafter referred to as the sensor) is by the microcontroller and peripheral integrated circuit with large front analog signal conditioning modules pipeline methane sensor. Unique real-time dynamic software application of temperature compensation technology enables sensor for sensing element is effective in compensating the drift, greatly improving the detection accuracy and long-term stability of the machine. Sensor to the methane concentration in coal mine gas drainage pipeline detection in a row, and to detect the methane density conversion into the corresponding frequency signal is sent to a device context. Suitable for coal mine gas drainage pipeline real-time continuous full range automatic detection of methane concentration. The main technical parameters Working conditions: Temperature (5 ~ 40 ℃); Relative humidity: 98% or less. Relative pressure (100 ~ 110) kPa; Velocity (0 ~ 20) m/s With methane and coal dust, used for the dangerous sites with explosive mixture; Storage temperature: (to 40 ~ 60 ℃); The rated working voltage: DC18V; The rated working current: 100 ma or less; Generally should be able to in the input voltage sensor (24) 9 ~ V within the scope of work; The Ann parameters: Ui: DC 18 v. Ii: 100 ma; Ci: 0.1 uF; Li: 0 mh; Measuring range: 4.0 ~ 100.0) % CH4; The working life of the sensitive element: > 1 year; The basic error Measure range (% CH4) this error difference (% CH4) The true value of plus or minus 10% of 4.0 to 40.0 St13 measurement limit 40.0 + / - 10% Alarm range (0.0 ~ 99.0) % CH4 (1% each step CH4); Warning: intermittent sound (sound level > 80 db); Intermittent flash (red LED); The output signal formats: Frequency type: : (200 ~ 1000) Hz, current mode; 1-5 ma; Display resolution: 0.1% CH4; Response time: 30 s or less; Transmission distance: sensor and associated equipment transmission distance of 2 km; Form a complete set of equipment and associated equipment (appendix 1); Mine intrinsically safe; Explosion-proof marks: ExibI; Protection grade: IP54. The shell material: stainless steel; Exterior size: 240 mm x 120 mm x 45 mm; Instruments: weight 2 kg.

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