METHOD FOR EXPRESS EVALUATION OF METROLOGICAL CHARACTERISTICS OF THE UNIT FOR RECORD OF GAS OF MEDIUM OR HIGH PRESSURE AT SITE OF OPERATION

摘要

The invention relates to measuring technique. A method of express evaluation of metrological characteristics of the units for record of gas of medium and high pressure at site of operation includes sequential connection of control measuring complex to the unit for gas record. According to the invention, the unit for gas registration is disconnected from the system of gas supply, as working medium one uses air that is passed through the unit for gas registration and control measuring mobile complex. The beginning and the end of measurements is set at instant of passage of initial and end pulses from the gas meter to corrector of gas volume. Measurement with the unit for gas record is carried out with use of pressure constant in corrector of gas volume, and at measurement with control measuring mobile complex one takes the same constant. At processing the results the gas volume brought to standard conditions that passes during time of measurements through the unit for gas record and control measuring mobile complex is calculated for the unit for gas record, on basis of value of a pulse of the gas meter of the unit for gas record and coefficients of transformation by results of measurements with corrector of gas volume of gas temperature in gas meter of the gas record unit at passage of each pulse, and for the control measuring mobile complex by the value of its pulse and transformation coefficients. The technical result is in increase of the level of safety at carrying out express evaluation of metrological characteristics of the unit for gas record at keeping reliability of results of express evaluation.