NA 152

DIN Standards Committee Technical Fundamentals

Project

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 6: Wedge meters (ISO/DIS 5167-6:2021); German and English version prEN ISO 5167-6:2021

Abstract

This document specifies the geometry and method of use (installation and operating conditions) of wedge meters when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit. It gives requirements for calibration which, if applied, are for use over the calibrated Reynolds number range. Clause 7 could also be useful guidance for calibration of meters of similar design but which fall outside the scope of this document. This document provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ISO 5167-1, but only to wedge meters in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. Uncalibrated wedge meters can only be used within specified limits of pipe size, roughness, beta (or wedge ratio) and Reynolds number. This document is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated wedge meters in pipes whose internal diameter is less than 50 mm or more than 600 mm, or where the pipe Reynolds numbers are below 1×10^4.

Begin

2021-10-13

WI

CSF05037

Planned document number

DIN EN ISO 5167-6

Project number

15202817

Responsible national committee

NA 152-04-02 AA - Flow and volume 

Responsible international committee

ISO/TC 30/SC 2/WG 11 - Revision of ISO 5167 

draft standard

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 6: Wedge meters (ISO/DIS 5167-6:2021); German and English version prEN ISO 5167-6:2021
2022-01
Order from Beuth Verlag

previous edition(s)

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 6: Wedge meters (ISO 5167-6:2019); German version EN ISO 5167-6:2019
2020-02

Order from Beuth Verlag

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