Measurement of fluid flow by means of pressure-differential devices — Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of ISO 5167 series
用压差装置测量流体流量ISO 5167系列范围以外的孔板、喷嘴和文氏管规范指南
This document describes the geometry and method of use for conical-entrance orifice plates, quarter-circle orifice plates, eccentric orifice plates and Venturi tubes with 10,5° convergent angles. Information is also given for square-edged orifice plates and nozzles under conditions outside the scope of ISO?5167 series.
NOTE?The data on which this document is based are limited in some cases.