the following example is for you reference.


1.Brief Introduction:

  

the Coal Spontaneous Combustion Underground Monitoring System of Duketech is used to monitor the gas content of O₂, N₂, H₂, He,CO, CO₂, CH₄, C₂H₄, C₂H₆, C₂H₂,H₂S,so₂,temperature, pressure, and so on. the regularity of formation of multi-component index gases during spontaneous combustion of coal is detected, which provides technical support and theoretical support for the identification of early hidden danger characteristic information of spontaneous combustion of coal.It can be used as a monitoring system for large-scale coal spontaneous combustion test bench and sample test bench, as well as provides experimental conditions for a multi-direction science such as coal fire prevention and fire science and improves the efficiency of coal mine production.

 

2.Techincal parameters:

  

Response time:

According to channel integration time(C.I.T.)and gas replacement cycle,typical 10s to several minutes;single gas<10 s;flushing time:nine gases(water vapor)<120s

Detection Principle: 

Spectroscopy (CO, CO₂, CH₄, C₂H₄, C₂H₆, C₂H₂, H₂O, H₂S, so₂, pressure, etc.), Thermal Conductivity (O₂,H₂,He,N₂), Semiconductor (Temperature);  

Sampling method: 

Extraction type, pumping length is not less than 6,000 meters;

Measurement range:

CO 0~1% CO₂ 0~5%

CH₄ 0~1% C₂H₄0~1%

C₂H₆0~1%C₂H₂0~1%

H₂O0~1%so₂ 0~1%

O₂     0~25%N₂0~80%

Temperature:(-5-100)    

Pressure:0~1000KPa

Detection Limit:

CO1ppm   CO₂5ppm

CH₄ 0.5ppmC₂H₄0.5ppm

C₂H₆0.5ppmC₂H₂0.5ppm

H₂O100ppmSO₂0.5ppm

O₂ 0.1%N₂0.5%

Temperature and Pressure Resolution:

Temperature:0.5      Pressure:0.1KPa  

Accuracy:2% measurement value

Monitoring bundle tube:

12, 24, 48, 64, customizable

Running time:24hour continuous monitoring or manual setting.

Standard:

Low Voltage Measurement Directive 2006/95/EC and electro magnetic EMC Directive2004/108/EC EN 50270: 2006, EN 61000-3-2: 2006, EN 61000-3-3: 1995 + A1: 2001 + A2: 2005, EN 61010-1: 2001

Safety standards:

EN61010-1 (2001), IEC 61010-1 (2001), CAN/CSA-C22.2 No. 61010-1 (2004)and UL 61010-1 (2004 incl. rev. 2005) 

 

3.Performance features:

L Gases: CO, CO₂, CH₄, C₂H₄, C₂H₆, C₂H₂, H₂O, H₂S, so₂, O₂,H₂,He, N₂, temperature, pressure, etc.    

L Detection limits of ppb, sub-ppm levels.

L Dust filter, single tube, bundle tube, shunt box, extraction pump, gas sampling control cabinet, monitoring computer,spectrum multi-gas analyzer, thermal conductivity multi-gas analyzer, print output equipment, network card, system software composition.

L Underground gas sampling and analysis system, including mine intrinsically safe substation, power box and supporting equipment.

L Ground data processing and sharing subsystem, including industrial computer, printer, etc.

L Ground analysis workstation: composed of  spectrum multi-gas analyzer, thermal conductivity multi-gas analyzer, collecting workstation power supply, etc.