CD4 (A) Explosion proof type mine Gas detector New pattern mine Gas Testing Alarm device Item NO.: 1938405

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Determination of CD4 multi parameter gas
It is mainly used to protect people 's lives and detect the data of methane, oxygen, carbon monoxide and hydrogen sulfide exposed to extreme environment. Catalytic combustion sensors (commonly known as black and white pieces) are used for methane part, and imported electrochemical sensors are used for oxygen, carbon monoxide and hydrogen sulfide part, which are sensitive, accurate and reliable. The instrument adopts solid engineering plastic shell and good protection design, and can be used in explosive environment such as gas and dust. The instrument is small and light. Ultra high brightness large screen LCD screen is still clearly visible in the dark underground, which can read gas concentration, time, electricity and other data. When the concentration of methane, carbon monoxide and hydrogen sulfide exceeds the limit or there is lack of oxygen, it can automatically give an audible and visual alarm to remind users.
The instrument is reliable in performance, reasonable in structure and easy to use. It is suitable for the occasion of gas explosion and coal and gas outburst. It is suitable for use in mine rescue, coal mining face, return air roadway, etc.
In coal mines with the risk of methane explosion:
a) Temperature: 0 ℃ ~ 40 ℃;
b) Relative humidity: ≤ 98%;
c) Atmospheric pressure: 80kPa ~ 116kpa;
d) Wind speed: ≤ 8m / S;
e) The storage temperature is - 40 ℃ ~ + 60 ℃;
f) In hazardous locations with explosive gas mixtures
Product characteristics
simultaneous measurement of instantaneous values of methane, oxygen, carbon monoxide and hydrogen sulfide
the sensor head is facing outward to avoid sensor failure caused by coal dust accumulation
ultra high brightness LCD display
high intelligent single chip computer
intelligent sensor fault alarm
sound, light, and other alarm modes
high protection level to ensure that it is suitable for harsh environment
charging continuous working time is more than 10 hours
with automatic sensor protection function
time display and setting function
with battery voltage indication function
small size, light weight, easy to carry
4 operation buttons, in line with the characteristics of coal mine use
red LED flashing, 95dB buzzer
high strength ABS engineering plastics, anti drop 1.8m
ergonomic design, better hand feel
Ma, explosion-proof and other certification, with international high-end quality
Main technical parameters
Instrument type
CD4
Measuring gas
Methane (CH4), oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S)
measuring principle
Catalytic combustion sensor (CH4), electrochemical sensor (O2, Co, H2S)
measuring range
CH4:0.00~4.00% O2:0.0~25.0%
CO:0~1000×10-6 H2S:0~100×10-6
measurement accuracy
CH4
0.00~1.00 ±0.10
1.00 ~ 3.00 ± 10% of the true value
3.00~4.00 ±0.30
O2
0.0~5.0 ±0.5
>5.0~25.0 ±3%FS
CO
0~20 ±2×10-6
>20~100 ±4×10-6
Over ± 5% of 100-500 measured value
Over ± 6% of the measured value of 500-1000
H2S
0~49 ±3×10-6
± 10% of 50-100 true value
Factory alarm point setting
CH4:1.00%,O2:18.0%,CO:24×10-6,H2S:10×10-6
Explosion proof type
Mine intrinsic safety and flameproof type
Explosion proof sign
ExdibI Mb
Temperature / humidity
0℃~40℃/≤98%
Display mode
High brightness LCD display
Battery capacity display function
Real time display of battery power
Measurement method
Diffusion measurement method
Alarm point setting
Full range adjustable
Time display
24 hour time system can be set
Alarm sound level intensity
80dB
Visibility of alarm light
>20m
Protection level
IP54
Continuous working time of instrument
More than 10 hours
Size / weight
125(L)×60(W)×34(H)mm/350g
Battery
3.7V rechargeable lithium manganate battery, the battery is protected by protection plate, with over-current protection function
Adjustable parameters
Zero point adjustment, precision adjustment, alarm point adjustment, time adjustment and date adjustment
Standard configuration
Host (including sensor and lithium battery)
Gas cap
Airway
Charger