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ISO 5167《用嵌装在充满的圆形截面管道中的孔板、喷咀和文丘利管测量流体流量》由ISO/TC30/SC_2“封闭管道中的流量测量/差压装置”制订,经ISO理事会批准,于1980年出版。它是在ISO R541—1967和ISO R781—1968的基础上合并修订而成的。ISO 5167的出版引起我国流量测量方面的重视。但是,在 ISO 5167的前言中有下面一段话: “在本国际标准制订期中,发现它与 ISO/TC28/SC5‘轻碳化氢流体的测量’将要制订的同一主题的文件相
ISO 5167 ”Measurement of Fluid Flow with Orifice, Spray Nozzles and Venturi Fittings Filled in Filled Round Cross Section Pipes“ was developed by ISO / TC30 / SC_2 ”Flow Measurement / Differential Pressure Devices in Closed Pipes“ Approved by the ISO Council, published in 1980. It is a combination of revised ISO R541-1967 and ISO R781-1968 made. The publication of ISO 5167 has drawn the attention of traffic measurement in our country. However, the foreword to ISO 5167 reads as follows: ”During the period of the development of this International Standard it was found that it was in the process of being co-developed with the documents of the same subject to be developed for the measurement of ISO / TC28 / SC5 light hydrocarbon fluids