| 摘要 |
Method for measurement of density of gas includes calculation of density of gas by given mathematical model of dependence of density of gas on parameters of pressure, temperature, and coefficient of compressibility of gas measured under given conditions in which measurement of density is performed by results of simultaneous measurements under standard conditions of parameters of gas and flow rate / volume by method of variable pressure drop on narrowing devices and method of measurement of flow rate / volume with use of gas meter. Calculation of density of gas is carried out with use of mathematical model by given algorithm with electronic information-measuring-control system. Measurement of density of gas is carried out with use of Prudnikov-Tsiomik’s device with implementation of preliminary calibration of the device by results of measurements of parameters of gas and flow rate / volume of gas under standard conditions with method of variable pressure drop on narrowing devices and method for measurement of flow rate / volume of gas with use of meter. At that preliminary calibration of the Prudnikov-Tsiomik’s device is carried out through passing pure nitrogen through the device at several flow rates within 0,35 and 0,9 m/h. With discrete 0,05 m/h. And at different absolute pressures before narrowing device within 0,2 and 0,5 MPa with following implementation of comparative calculations of density of has with electronic information-measuring-control system under conditions of real measurements with previously calibrated device with account of adjustment coefficient of the device determined by points of range in process of calibration. |
