Infrared methane sensor
One, overview
GJH100 (B) by infrared methane sensor type mine (hereinafter referred to as the sensor) by non dispersive infrared detection of advanced international (NDIR) detection technology, to overcome the traditional thermal catalytic principle of sensor calibration cycle is short, easy to poisoning and other defects, the sensor adopts the embedded micro controller technology, temperature compensation circuit with accurate, eliminates the influence of the temperature on the measurement precision, the instrument has accurate measurement, fast response, calibration cycle is long, without other gas effect, wide measuring range, low power consumption, long service life, stable performance, high reliability. Real time measurement can realize the underground gas concentration in situ display and overrun alarm and other functions, and can control the underground gas concentration is converted into a standard signal conveying to the associated equipment. Is a substitute for coal mine monitoring methane concentration update.
Two, the main technical indexes
A) working voltage: 9 ~ 24V DC
Working current: 40mA DC18V b)
C) the basic error:
The output signal D): 200 ~ 2200 ~ 3100Hz (corresponding to 0 ~ 10 ~ 100.0%CH4)
E) signal transmission distance: 2Km
F) range: 0 ~ 100%CH4
G) resolution: 0.01%CH4 (0 ~ 10.0%CH4), 0.1%CH4 (10 ~ 100.0%CH4)
H) sampling methods: free diffusion
Response time: 25s I)
J) calibration period: 2 months
K) service life: 5 years
L) alarm: alarm
M) explosion proof type: ExibdI flameproof and intrinsically safe
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