Instrument for simultaneously and automatically measuring adsorption capacity and adsorption swelling capacity of coal petrography in high pressure gas

The utility model relates to an instrument for simultaneously and automatically measuring adsorption capacity and adsorption swelling capacity of coal petrography in high pressure gas. The instrument can simultaneously and automatically measure adsorption capacity and adsorption swelling capacity of coal petrography in high pressure gas in the temperature range of 0 to 80 DEG C. In a measuring process, a measuring control instrument can carry out signal conversion and analog-to-digital conversion on electrical signals of a displacement sensor, a temperature measuring thermal resistance and a pressure transmitter; a computer automatically receives the pressure, temperature and displacement signal data from the measuring control instrument and records and stores the received data; a screen of the computer displays the pressure, temperature, adsorption capacity and swelling capacity data in an experiment process in real time and displays a law curve of the variation of the pressure, temperature and swelling capacity along with time in real time. The instrument has the advantages that the instrument completes the measurement on the adsorption capacity and adsorption swelling capacity in one time, is simpler and more convenient and rapid, has a simple structure and is reliable and safe in high pressure sealing, easy for operation, high in measuring precision, high in pressure resistance and automatic in measurement.