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1 概述影响流量计量精度的因素除现场计量条件和流量仪表自身的性能等因素以外,在很大程度上取决于流量标准装置。所谓流量标准装置通常是指能够较高精度地复现流量标准值,并能对流量仪表进行检定的工作系统。流量仪表的误差、重复性和压力损失等特性都要由流量
1 Overview The factors that affect the accuracy of the flow measurement depend largely on the flow standard device, in addition to factors such as the field metering conditions and the performance of the flow meter itself. The so-called flow standard device usually refers to the ability to reproduce the flow standard value with higher accuracy, and can check the flow meter working system. Flow meter error, repeatability and pressure loss and other characteristics must be by the flow