METHOD FOR EXPRESS-EVALUATION OF METROLOGICAL CHARACTERISTICS OF GAS REGISTRATION UNIT AT OPERATION SITE

摘要

A method for express evaluation of metrological characteristics of gas registration unit at operation site includes connection of control-measuring mobile complex (CMMC) to the gas registration unit. Then one connects the measuring pressure converter of additional channel of CMMC to fitting for pressure takeoff. One installs on the pipeline of the gas registration unit (GRU) of measuring temperature converter an additional channel for corrector of gas volume of CMMC. One connects gas meter to gas volume corrector of GRU and to CMMC for transfer of electric pulses. One takes readings from GRU and CMMC and processes results of measurements. The GRU is disconnected from the system of gas supply, and as working medium one takes air. Beginning and end of measurements are set at instant of passage of initial and end pulses from gas meter to corrector of gas volume. Volume of gas brought to standard conditions is calculated for gas registration unit by cost of gas counter pulse and transformation coefficients, and for CMMC by cost of its pulse and transformation coefficients.