Product Description 
 For coal methane adsorption isotherms and desorption isotherms. The supporting device can be widely used as a coal mine coal and gas outburst identification, the three groups of pulverized coal. All levels of coal mine production safety inspection and testing institutions, around the mine laboratory, Bureau of Mines that the metering station of the regional coal mine safety equipment, measurement and technology institutions at all levels to carry out the identification of the device of mine coal and gas outburst risk indicators. 
 Product structure characteristics 


 The test environment parameter measurement system: determination of the parameters of the current use and test environment temperature, atmospheric pressure, as determination of the correction value entered into the computer. 
 Pulverized coal preparation system: preparation used to test the particle size of pulverized coal, can be crushing, milling, screening a test pulverized coal. 
 Coal sample drying systems: a vacuum drying, rapid drying of coal samples, prolapse of the moisture in the coal sample. 
 Coal samples weighing system: in line with GB / GB / T 19560-2008 requirements of high-precision balance, accurate weighing. 
 The coal sample degassing system: removal of the adsorption of methane gas in coal samples and free methane gas under vacuum in the high temperature of 60 degrees. 
 Adsorption inflation system: at constant temperature 30-40 degrees, filled less than 11MPa range of 99.9% CH4 gas, determination of the adsorption pressure difference and the adsorption capacity. 
 The pressure parameter acquisition and display systems: real-time acquisition the parameters of the various pressure points, and transmitted to the computer display. 
 Computer analysis and calculation system: set test pressure points, collecting test pressure points, balance the pressure points, adsorption time, adsorption pressure, adsorption of a single amount, the cumulative amount, and using the least squares method the values ??of A, B, R, draw adsorption curve.