Instrument parameters of WTC gas outburst
One, overview
1 product features
WTC gas outburst parameter instrument is a method for the determination of portable mine intrinsically safe apparatus forecast parameters of coal and gas outburst in coal mines, all data can be stored, instrument display, print and ground computer communication. The instrument has the advantages of strong function, small volume, light weight, simple operation, reliable performance, dampproof and dustproof and good performance, is an advanced equipment of coal mine to prevent coal and gas outburst disaster indispensable.
2 the main purpose and scope
The instrument is mainly used for the determination of cuttings gas analytical index K1. The instrument has the Chinese menu prompt operation, data display, print, battery power and real time clock display function.
3 model description
4 explosion-proof type and explosion-proof mark
Explosion proof type: Mining intrinsic safety type
Explosion-proof symbol: Exib 1
5 suitable environmental conditions
A) environmental atmospheric pressure: 86kPa~106kPa
B) environment temperature: 0 ℃ ~+40 ℃
C) air relative humidity: ≤ 95% (25 ℃)
D) with underground methane mixture and coal dust explosion hazard of coal mine
E) in gas without destroying metal insulated and steam environment
F) in the absence of water.
G) storage temperature -40 ℃ ~+60 ℃
H) instrument of low energy consumption, the use of nickel metal hydride rechargeable battery as the power supply.
Two, the work principle and structure feature
1 structural features
Parameters of gas meter is composed of: host, coal tank, sieve, a spring balance, a printer, charger and so on.
The 2 Principle
The coal containing gas tank placed in coal samples, according to the change in pressure volume, isobaric analysis principle of different coal sample measurement time in the tank, and then calculate the gas desorption quantity corresponding, making corresponding mathematical treatment according to the relationship between the exposure time of desorption amount of gas and coal sample then, draws the cuttings gas analytical index K1 keyboard input, drilling cuttings weight indexes of Smax, K1, Smax according to the prediction of outburst danger.
Three, the main technical parameters
1 pressure measurement range: 0kPa~10kPa
2 pressure measurement error: < ± 2%
The 3 power supply voltage: 9.6V
4 current: < 200mA
5 power: gas parameters instrument is composed of 8 8-4/5 type 2000mAh Ni MH battery, battery group in series 11 Ω /20w current limiting resistor, and is sealed by epoxy resin as a whole, form the intrinsically safe battery assembly. Battery powered continuous working time: more than 8h
The 6 intrinsic parameters:
A) rated supply voltage Ue:9.6V
B) the highest output voltage Uo:10.9V
C) the maximum output current of Io:1.45A
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