BS EN ISO 5167-3:2020 - Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full. Nozzles and Venturi nozzles

BS EN ISO 5167-3:2020

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full. Nozzles and Venturi nozzles

Status : Current   Published : September 2020

Format
PDF

Format
HARDCOPY



This document specifies the geometry and method of use (installation and operating conditions) of nozzles and Venturi nozzles when they are inserted in a conduit running full to determine the flowrate of the fluid flowing in the conduit.

This document also provides background information for calculating the flowrate and is applicable in conjunction with the requirements given in ISO 5167-1.

This document is applicable to nozzles and Venturi nozzles in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. In addition, each of the devices can only be used within specified limits of pipe size and Reynolds number. It is not applicable to the measurement of pulsating flow. It does not cover the use of nozzles and Venturi nozzles in pipe sizes less than 50 mm or more than 630 mm, or where the pipe Reynolds numbers are below 10 000.

This document deals with

  1. three types of standard nozzles:

    1. ISA 1932 5

      5

      ISA is the abbreviation for the International Federation of the National Standardizing Associations, which was superseded by ISO in 1946.

      nozzle;

    2. the long radius nozzle 6

      6

      The long radius nozzle differs from the ISA 1932 nozzle in shape and in the position of the pressure tappings.

      ;

    3. the throat-tapped nozzle

  2. the Venturi nozzle.

The three types of standard nozzle are fundamentally different and are described separately in this document. The Venturi nozzle has the same upstream face as the ISA 1932 nozzle, but has a divergent section and, therefore, a different location for the downstream pressure tappings, and is described separately. This design has a lower pressure loss than a similar nozzle. For all of these nozzles and for the Venturi nozzle direct calibration experiments have been made, sufficient in number, spread and quality to enable coherent systems of application to be based on their results and coefficients to be given with certain predictable limits of uncertainty.




Standard NumberBS EN ISO 5167-3:2020
TitleMeasurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full. Nozzles and Venturi nozzles
StatusCurrent
Publication Date15 September 2020
Normative References(Required to achieve compliance to this standard)ISO 4006, ISO 5167-1
Informative References(Provided for Information)GUM:1995, ISO/IEC Guide 98-3, ISO/TR 3313, ISO/TR 9464, ISO 4288, ISO 5168
ReplacesBS EN ISO 5167-3:2003
International RelationshipsEN ISO 5167-3:2020,ISO 5167-3:2020
Draft Superseded By19/30374354 DC
DescriptorsNozzles (flow), Conduits (hydraulic), Pressure, Fluid flow, Measurement
ICS17.120.10
Title in FrenchMesurage du débit des fluides au moyen d'appareils déprimogènes insérés dans des conduites en charge de section circulaire Tuyères et Venturi-tuyères
Title in GermanDurchflussmessung von Fluiden mit Drosselgeräten in voll durchströmten Leitungen mit Kreisquerschnitt Düsen und Venturidüsen
CommitteeCPI/30/2
ISBN978 0 539 00178 5
PublisherBSI
FormatA4
DeliveryYes
Pages52
File Size1.212 MB
Price£254.00


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