Instrument Introduction:
This instrument is a designated product for coal mine safety analysis, and is a specialized instrument for the 'coal spontaneous combustion tendency chromatographic oxygen absorption method' specified in the national 'Coal Mine Safety Regulations'. One of the 100 promotion projects for the coal system.

Using dual gas path flow chromatography oxygen absorption method, the characteristics of low-temperature adsorption of fluidized oxygen in coal are determined. Based on the oxygen absorption value of coal under predetermined conditions, the coal is classified into spontaneous combustion tendency grades.

☆ Implementation standard: MT/T707-1997 "Coal Spontaneous Combustion Tendency Gas Chromatography Oxygen Absorption Identification Method" MT/T708-1997 "Technical Conditions for Coal Spontaneous Combustion Tester"


Technical parameters:
Measurement method: Dual gas flow chromatography oxygen absorption method
Measurement range: Oxygen uptake 0.05-4ml (milliliters)/g (coal)
Measurement error: ≤ 5%
Baseline drift: ≤ 0.6mv/hr
Purity of carrier gas: N₂≥99.99%
Purity of adsorbed gas: O₂≥99.99%
Sensitivity: ≥ 10mv/ml(N₂Carrier gas, O₂Peak height
Temperature control accuracy: ± 0.5 ℃
Power supply: 220V ± 20%, 50Hz ± 0.5, 500W

Main features:
1. The instrument design has strong specificity, compact structure, good stability, and simple operation

2. Adopting antioxidant hot wire components and constant average temperature bridge power supply method

3. Four channel sample processing system with high testing efficiency

4. Microcomputer control, automatic constant temperature, automatic printing of analysis results, and automatic classification according to standard regulations.