BS EN ISO 5167-2-2003 用插入圆截面管道中的压差装置测量流体流量.节流孔板

标准号：BS EN ISO 5167-2-2003
中文标准名称：用插入圆截面管道中的压差装置测量流体流量.节流孔板
英文标准名称：Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Orifice plates
标准类型：A42
发布日期：2003/3/18 12:00:00
实施日期：2003/3/18 12:00:00
中国标准分类号：A42
国际标准分类号：17.120.10
适用范围：This part of ISO 5167 specifies the geometry and method of use (installation and operating conditions) oforifice plates when they are inserted in a conduit running full to determine the flowrate of the fluid flowing inthe conduit.This part of ISO 5167 also provides background information for calculating the flowrate and is applicable inconjunction with the requirements given in ISO 5167-1.This part of ISO 5167 is applicable to primary devices having an orifice plate used with flange pressuretappings, or with corner pressure tappings, or with D and D/2 pressure tappings. Other pressure tappingssuch as “vena contracta” and pipe tappings have been used with orifice plates but are not covered by this partof ISO 5167. This part of ISO 5167 is applicable only to a flow which remains subsonic throughout themeasuring section and where the fluid can be considered as single phase. It is not applicable to themeasurement of pulsating flow. It does not cover the use of orifice plates in pipe sizes less than 50 mm ormore than 1 000 mm, or for pipe Reynolds numbers below 5 000.