EAST AND WEST GC-4085 Automatic Coal Mining Multiple Parameters Gas Chromatograph

EAST AND WEST GC-4085 Automatic Coal Mining Multiple Parameters Gas Chromatograph

 

 

GC-4085 Automatic Coal Mining Multiple Parameters Gas Chromatograph is a key component of a monitoring system for checking conditions within the coal mine. Ihe gas chromatograph has two column ovens with three parallel columns connected to injection ports and interchangeable specialized columns and detectors. Samples can be automatically injected into 12-32 gas paths connected to gas tubes. Through computer control and data processing software, the instrument can safely analyze data with a gas overflow automatic shutdown system. Data analyzed will also be automatically recorded and printed for future reference. With real-time monitoring of the mine's conditions, GC-4085 can accurately determine the probability of combustions in the mine,changes in concentrations of combustible gases,and the area in which combustion is most likely to occur.

 

The instrument itself has a high degree of automation with an efficient structure design. It is especially suited for performing a variety of analytical processes easily and simply. This instrument is highly accurate with shortened cycle times, perfect for analyzing gas concentrations and preventing fires in the mine. Compared to other domestic gas chromatographs,GC-4085 is one few chromatographs that the Chinese Ministry of Coal recognize as the most superior.

Improvements

1. Fully Automatic Operation: microprocessor-controlled, up to 32 (in some instances above 32) continuous sample loops, can automatically maintain settings, monitor conditions, print analysis reports, and upload data into the local network.

2. High Stability: Two column ovens (high, low temperature) with temperature control, three parallel columns and methane input system.

3. Fast Analyses: A complete analysis of all gases responsible for combustions: CO, O2, N2, CO2, CH4, C2H2, C2H4, C2H6, C3H8, C4H10, and other gases in 4-8 minutes.

4. Minimum Detectable Concentrations:

CO, C2H2, C2H6 0.5 ppm

CH4, C2H4 O.1 ppm

CO2 2 ppm,

O2, N2 0.1%

5. Advanced data processing workstation for coal mines with the first domestic four-channel 24-bit A/D converter. Preditions of fires are based on the concentrations of alkanes, alkenes, and alkynes.


6. Fire triangle software monitors and determinse the probability of gas combustions and provide a measure of safety for production in the coal mines.

 

Technical Parameters

· Fully Automatic Operation: microprocessor-controlled, up to 32 (in some instances above 32) continuous sample loops, 3 columns simulataneous sampling and analysis, data is automatically printed and can be stored in the local network

· High Stability: Thermal conductivity conductor, two column ovens, three parallel columns (equivalent to two seperate gas chromatographs configured as one). The double column oven system ensures that the temperatures in each of the two column ovens are different to analyze carbon monoxide,alkenes, alkanes, and ten other different gases. This greatly increases the speed and accuracy of the analysis for a more reliable forecast.

· Safety and Lifespan: Three columnn installation devices to prevent contamination and promote longer working times.

· Fast Analysis: Backflushing for faster analysis by reducing cycle times. For one injection, it only takes 4 to 8 minutes to find the concentractions of O2, N2, CO, and CO2 and trace amounts of CO, CH4, C2H2, C2H4, and C2H6 to accurately predict the probability of potential fires. Within 10 minutes, the instrument will determine the trace amounts of all previously listed gases as well as C3H8.

· Routine and Specific Monitoring: Exist for some special parts of the instrument (but not at the sampling points). A conventional gall ball can be used to store gas for routine analysis.

· Automatic/Manual Conversion: Can easily convert the instrument from a specialized gas chromatograph monitoring mine conditions to a general-purpose laborartory GC.

· Flexible: Can analyze alkanes, sulfure hexaflouride, sulfur dioxide, and other gases within the mine.

· Minimum Detectable Concentration of Gases Responsible for Combustion:

CO ≤ 0.5ppm
C2H4 ≤ 0.1 ppm

C2H2 ≤ 0.5 ppm
CO2 ≤ 2.00 ppm

C2H6, C3H8 ≤ 0.5 ppm
CH4 ≤ 0.1 ppm
Systematic Error ≤ 1.0%

A5085E Analysis Software

Features

· A5085E analysis software is designed specifically for GC-4085B, with a data processing and fire triangle program.

· Fire Prediction program: Determines the concentration of gases responsible for combustion, such as the ratio of alkanes, alkenes, and alkynes, as well as quickly and accurately predicting the temperature of the fire source.

· Four-channel 24-bit A/D converter, with a spare channel (exclusive four-channel data processing for China only)

· Automatic gas overflow alarm.

· Analytical data and spectral parameters are automatically stored and printed.

· Capable of storing data over a network.

· Single-point calibration, calibration curve, multiple lines of best fit.

· Powerful peak identification and processing functions and high sampling accuracy. Automatically accounts for peak tailing.

· Simple, easily replicable operation. A variety of sampling control and processing is offered to increase work efficiency.

Technical Parameters

Frequency: 20 times/S, 30 times/S, 60 times/S
Sensitivity: 0.1 mv/s,
Range: ± 1 V
Peak Detection Method: Peak height, peak area.
Fire Triangle Software Utilizes Analysis Results to Determine the Risk of Combustion

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