Uncertainty Analysis on the mt (mass/time) Standard Metering Calibrator for West-to-East Gas Transmission Pipeline

This paper analyzes the mass uncertainty, time uncertainty of mt (mass/time) standard metering calibrator including the influence of change valve on the mt standard metering calibrator for the West-to-East Gas Transmission Pipeline, and determines the combination uncertainty of the calibrator. The authors consider that the analysis result can meet the needs of metering accuracy for metering testing center of West-to-East Gas Transmission Pipeline on the prime class.