INVESTIGATION OF THE METROLOGICAL CHARACTERISTICS OF THE NATURAL GAS FLOW RATE STANDARD BASED ON VARIABLE PRESSURE DROP FLOWMETER

Orest Serediuk, Vitaliy Malisevych, Zygmunt Warsza

Abstract

The analysis of existing in World practice flow rate measurement standards for calibration of the gas flow and volume measuring devices for operating conditions is carried. A new idea of the design the flow rate measurement standard dedicated for calibration meters and flow meters of natural gas is considered. It apply the variable pressure drop method for measuring the flow rate and volume of gas using the diaphragm as the constriction device. Design features of standard and its calibration with use of the standard flow rate measuring bell-type device are given.<BR />The numerical modelling of coefficients, which determine the metrological parameters of flow rate measurement standard during its calibration and work, is conducted. The zones of the improved stability of standards flow rate coefficient values are established. The extended uncertainties of flow rate measurement standard during calibration and working are estimated.

Keywords

natural gas, flow rate, measurement standard, variable pressure drop, metrological parameters

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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