ΟγΈΫΑωΊΟ²ΚΏͺ½± 5167-4:2022
2022-06
ΟγΈΫΑωΊΟ²ΚΏͺ½± 5167-4:2022
Abstract
This document specifies the geometry and method of use (installation and operating conditions) of Venturi tubes[1] when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.
This document also provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ΟγΈΫΑωΊΟ²ΚΏͺ½± 5167-1.
This document is applicable only to Venturi tubes in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. In addition, Venturi tubes can only be used uncalibrated in accordance with this standard within specified limits of pipe size, roughness, diameter ratio and Reynolds number, or alternatively they can be used across their calibrated range. This document is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated Venturi tubes in pipes sized less than 50Μύmm or more than 1Μύ200Μύmm, or where the pipe Reynolds numbers are below 2ΜύΓΜύ105.
This document deals with the three types of classical Venturi tubes:
a) βas castβ;
b) machined;
c) fabricated (also known as βrough-welded sheet-ironβ).
A Venturi tube consists of a convergent inlet connected to a cylindrical throat which is in turn connected to a conical expanding section called the divergent section (or alternatively the diffuser). Venturi nozzles (and other nozzles) are dealt with in ΟγΈΫΑωΊΟ²ΚΏͺ½±Μύ5167-3.
NOTEΜύΜύΜύΜύΜύΜύ In the USA the classical Venturi tube is sometimes called the Herschel Venturi tube.
Μύ
[1]ΜύΜύΜύIn the USA the classical Venturi tube is sometimes called the Herschel Venturi tube.
General information
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Status: PublishedPublication date: 2022-06Stage: International Standard published [60.60]
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Edition: 2Number of pages: 26
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Technical Committee :ΟγΈΫΑωΊΟ²ΚΏͺ½±/TC 30/SC 2ICS :17.120.10
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