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一、引言液体流量计被广泛应用在各类控制、传输管道中,用来计量流经管道的流体流量。现行的各类流量计的检定规程均是考虑流量计的实验室送检,实际上由于生产以及工艺的要求,许多流量计无法按照规程规定的检测周期送检,而且许多流量计即使实验室检测合格,由于现场安装和工况条件的限制,根本无法达到实验室检定所规定的测量精度。因此,如何确保在线使用而无法及时送检的流量计的计量准确度,流量计量面临的新课题。本文利用超声波流量计对污水计量的电磁流量计的示值进行比对,根据测量结果的不确定度评定,对使用中流
I. Introduction Liquid flowmeter is widely used in various types of control, transmission pipeline, used to measure the flow of fluid flowing through the pipeline. In fact, due to the requirements of production and process, many flowmeters can not be inspected in accordance with the inspection cycle specified in the rules and regulations, and many flowmeters even have laboratory tests Qualified, due to site installation and conditions of the conditions, simply can not meet the laboratory test required by the measurement accuracy. Therefore, how to ensure the measurement accuracy of the flowmeter that can not be used online in time and the flow measurement problem? In this paper, the use of ultrasonic flowmeters electromagnetic flowmeter measurements of water than the indication, based on the uncertainty of measurement results, the use of the flow