Bsi bs en 24006 1993 (1999) iso 4006 1991

Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI BRITISH STANDARD BS EN 24006:1993 ISO 4006:1991 Incorporating Amendment No Measurement of fluid flow in closed conduits — Vocabulary and symbols The European Standard EN 24006:1993 has the status of a British Standard UDC 532.57:532.542:001.4 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI BS EN 24006:1993 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Industrial-process Measurement and Control Standards Policy Committee (PCL/-) to Technical Committee PCL/2, upon which the following bodies were represented: British Compressed Air Society British Gas plc Department of Energy (Gas and Oil Measurement Branch) Department of Trade and Industry (National Engineering Laboratory) Electricity Industry in United Kingdom Energy Industries Council GAMBICA (BEAMA Ltd.) Institute of Measurement and Control Institute of Petroleum Institute of Trading Standards Administration Institution of Gas Engineers Institution of Mechanical Engineers Society of British Gas Industries Water Services Association of England and Wales This British Standard, having been prepared under the direction of the Industrial-process Measurement and Control Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 31 October 1991 © BSI 07-1999 Amendments issued since publication First published March 1980 Second edition October 1991 Amd No Date Comments 7978 October 1993 Indicated by a sideline in the margin The following BSI references relate to the work on this standard: Committee reference PCL/2 Draft for comment 88/26611 DC ISBN 580 20141 BS EN 24006:1993 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI Contents Page Committees responsible Inside front cover National foreword iii Foreword Introduction Scope Symbols Subscripts General terms in fluid mechanics Uncertainties 12 General terms related to the devices 18 Differential pressure devices 20 Critical flow measurement 26 Velocity-area methods 27 10 Tracer methods 30 11 Electromagnetic methods 31 12 Weighing and volumetric methods 32 13 Instability methods 37 14 Variable-area methods 39 15 Ultrasonic methods 43 16 Other methods 46 17 Meters (for the measurement of the volume of fluids) 48 Annex A (informative) Bibliography 52 Alphabetical index 53 Figure — Diagram illustrating the terms relating to pressure Figure — Diagram illustrating the terms relating to errors and uncertainties 18 Figure — Square-edged orifice plate with piezometer ring 22 Figure — Orifice plates 23 Figure — Nozzles 24 Figure — Classical Venturi tube 24 Figure — Truncated and conventional Venturi nozzle 25 Figure — Toroidal throat Venturi nozzle 27 Figure — Cylindrical throat Venturi nozzle 27 Figure 10 — Propeller-type current-meter 28 Figure 11 — Example of a Pitot static tube 29 Figure 12 — Piston provers 34 Figure 13 — Bell prover 35 Figure 14 — Liquid displacement system 35 Figure 15 — Soap-film burette 36 Figure 16 — Ring balance 36 Figure 17 — Principle of operation of a fluidic flowmeter, shown with the flow in one of the alternative modes 37 Figure 18 — Principle of operation of the vortex-shedding meter 38 Figure 19 — Principle of operation of the vortex precession meter 38 Figure 20 — Diagram of a wake oscillator 38 Figure 21 — Variable-area meter 39 Figure 22 — Principle of operation of a cone-and-float meter 40 Figure 23 — Orifice-and-plug meter 41 Figure 24 — Gate-type meter 42 © BSI 07-1999 i Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI BS EN 24006:1993 Page Figure 25 — Spring-loaded variable-area variable-head meter 43 Figure 26 — Principle of operation of the single-path diagonal-beam meter 44 Figure 27 — Principle of operation of the multi-path diagonal-beam meter 45 Figure 28 — Arrangement of transducers in a four-path diagonal-beam meter 45 Figure 29 — Principle of operation of the cross-correlation ultrasonic meter 47 Figure 30 — Principle of operation of the Doppler ultrasonic meter 47 Figure 31 — Examples of rotary displacement meters 49 Figure 32 — Gas turbine meter 51 Publication(s) referred to Inside back cover ii © BSI 07-1999 BS EN 24006:1993 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI National foreword This British Standard has been prepared under the direction of the Industrial-process Measurement and Control Standards Policy Committee It is identical with ISO 4006:1991 “Measurement of fluid flow in closed conduits — Vocabulary and symbols”, published by the International Organization for Standardization (ISO) and supersedes BS 5875:1980, which is withdrawn In 1993 the European Committee for Standardization (CEN) accepted ISO 4006:1991 as European Standard EN 24006:1993 As a consequence of implementing the European Standard this British Standard is renumbered as BS EN 24006 and any reference to BS 5875:1991 should be read as a reference to BS EN 24006 Both the English and French texts are given in this British Standard, as presented in the original ISO 4006, to facilitate production Cross-references International standard Corresponding British Standard 3534:1977a BS 5532 Statistical terminology Part 1:1978 Glossary of terms relating to probability and general terms relating to statistics (Identical) ISO 5167:1980b BS 1042 Measurement of fluid flow in closed conduits Section 1.1:1981 Specification for square-edged orifice plates, nozzles and venturi tubes inserted in circular cross section conduits running full (Technically equivalent) ISO 5168:1978c BS 5844:1980 Methods of measurement of fluid flow: estimation of uncertainty of a flow rate measurement (Identical) ISO a Reference in the text to ISO 3534-1 is to the revised edition currently in preparation It is envisaged that, when the revised edition of ISO 3534 (numbered ISO 3534-1) is published, a revised edition of BS 5532-1 will be published b Reference in the text to ISO 5167-1 is to the revised edition currently in preparation It is envisaged that, when the revised edition of ISO 5167 (numbered ISO 5167-1) is published, a revised edition of BS 1042-1.1 will be published c Reference in the text to ISO 5168 is to the revised edition currently in preparation It is envisaged that, when the revised edition of ISO 5168 is published, a revised edition of BS 5844 will be published A related British Standard to ISO 772:1988 is BS 3680 “Measurement of liquid flow in open channels Part 1:1983 Glossary of terms”1) A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, the EN title page, pages to 54, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover 1) A © BSI 07-1999 revised edition of BS 3680-1 is in preparation iii iv blank Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 24006 NORME EUROPÉENNE June 1993 EUROPÄISCHE NORM UDC 532.57:532.542:001.4 Descriptors: Liquid flow, pipe flow, flow measurement, vocabulary, symbols English version Measurement of fluid flow in closed conduits — Vocabulary and symbols (ISO 4006:1991) Mesure de débit des fluides dans les conduites fermées — Vocabulaire et symboles (ISO 4006:1991) Durchflußmessung von Fluiden in geschlossenen Leitungen — Begriffe und Formelzeichen (ISO 4006:1991) This European Standard was approved by CEN on 1993-06-18 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1993 Copyright reserved to CEN members Ref No EN 24006:1993 E Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 Foreword In 1991, ISO 4006:1991 Measurement of fluid flow in closed conduits — Vocabulary and symbols was submitted to the CEN Primary Questionnaire procedure Following Resolution BT C 42/1992, ISO 4006:1991 was submitted to the formal vote; the result was positive This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1993, and conflicting national standards shall be withdrawn at the latest by December 1993 According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 42 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 43 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 44 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 45 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 46 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 47 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 48 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 49 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 50 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 51 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 52 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 © BSI 07-1999 53 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI EN 24006:1993 54 © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI BS EN 24006:1993 Publication(s) referred to See national foreword © BSI 07-1999 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Sep 28 10:33:24 BST 2006, Uncontrolled Copy, (c) BSI BS EN 24006:1993 ISO 4006:1991 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: 020 8996 9001 Fax: 020 8996 7001 In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: 020 8996 7111 Fax: 020 8996 7048 Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: 020 8996 7002 Fax: 020 8996 7001 Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the internationalstandardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained BSI 389 Chiswick High Road London W4 4AL If permission is granted, the terms may include royalty payments or a licensing agreement Details and advice can be obtained from the Copyright Manager Tel: 020 8996 7070