Introduction Determination of single-component gas adsorption and desorption isotherms can also measured multicomponent gas adsorption isotherms, and can strike in coal gas diffusion coefficient, comprehensive evaluation of the impact of coal drilling or fracturing fluid reservoir . Determination of the adsorption constants a, b values, test coal adsorption capacity, draw adsorption and desorption isotherms calculated seam gas content, for coal seam gas drainage, coal-bed methane development to provide reliable basic data, test temperature up to 100 ℃, is currently the most advanced high-temperature high-pressure adsorption desorption equipment. At the same time, the device is more important use is for academic research coal, petrochemicals, energy, solid material high pressure (32MPa) adsorption behavior. The instrument can also be studied multicomponent adsorption properties. Isotherm consists of the following processes: the sample chamber sample loading, check the tightness, the free space volume measurement, isothermal adsorption experiments, data processing among the most important instrument experimental adsorption isotherm is divided into several steps: determining the experimental pressure EXPERIMENTAL pressure point distribution, inflatable, data acquisition, the adsorption equilibrium time determining time is usually not less than one adsorption equilibrium 12 hours, a complete analysis of the sample takes more than 7 days End time, so the accuracy of the pressure sensor, the impact on the system stability very large. Product Features ■ automatic control of adsorption and desorption isotherms of the instruments; ■ highest analytical pressure up to 50MPa, can be used to analyze the methane gas, coal bed methane, shale gas and other samples; ■ can be single component adsorption isotherm analysis, also multi-component can be analyzed; ■ two separate temperature-controlled oil bath, can be performed on different samples at different temperatures; ■ oil bath with dual pump cycle, porous spray and other patented technology to ensure a high level of temperature uniformity; ■ Ultra-high precision pressure sensors, minimal temperature drift and long term stability; ■ high performance gas pressurization and stable system to ensure smooth and accurate preset pressure; ■ pneumatic pressure coefficient is high, with the hazard warning and automatic processing functions. Applications are mainly used in methane gas, coal bed methane, shale gas exploration research. ? Coalbed methane gas content analysis? Shale gas content analysis? Deep geological structure exploration analysis? Natural gas deep development analysis? Neritic days geological structure analysis specifications Dimensions L2700, H1800, D760 mm Weight 180 Kg Power AC220V 50 / 60Hz Operating Environment 0- 50 degrees, 5% -95% Rh oil bath temperature of -100 degrees, 70L temperature sensor 0-200 degrees, 0.1 degree accuracy of the heating medium at high temperature silicone oil operating pressure 40MPa reference cylinder 6 samples cylinder 6 Material 316L maximum pressure sample loading volume 1Kg pneumatic lift rail pressure sensor pressure 50MPa, 0.01% accuracy servo control preset pressure gas line pressure switch high pressure pneumatic sampling port switching valve with sampling and analysis of each channel port with port relief and safety relief Regulator air resistance of Advantech industrial computer Machine acquisition and control system 16 channel 16-bit precision A / D card, 16-channel DO card can work continuously long period of continuous work under software control preset pressure, automatically determine the adsorption equilibrium, draw isotherms calculated amount of adsorption pressure redundant safety design, overvoltage alarm, gas automatic switching, manual emergency operation