1、BRITISH STANDARD BS EN 24006:1993 ISO 4006:1991 Incorporating Amendment No. 1 Measurement of fluid flow in closed conduits Vocabulary and symbols The European Standard EN24006:1993 has the status of a British Standard UDC 532.57:532.542:001.4BS EN24006:1993 This British Standard, having been prepare
2、d under the directionof the Industrial-process Measurement and Control Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 31October1991 BSI 07-1999 First published March 1980 Second edition October 1991 The following BSI references relate to th
3、e work on this standard: Committee reference PCL/2 Draft for comment 88/26611 DC ISBN 0 580 20141 4 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 Technica
4、l 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 Counci
5、l 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 Amendments issued since
6、publication Amd. No. Date Comments 7978 October 1993 Indicated by a sideline in the marginBSEN24006:1993 BSI 07-1999 i Contents Page Committees responsible Inside front cover National foreword iii Foreword 2 Introduction 3 1 Scope 4 2 Symbols 5 3 Subscripts 7 4 General terms in fluid mechanics 7 5 U
7、ncertainties 12 6 General terms related to the devices 18 7 Differential pressure devices 20 8 Critical flow measurement 26 9 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 Ult
8、rasonic 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 1 Diagram illustrating the terms relating to pressure 9 Figure 2 Diagram illustrating the terms relating to errors and uncertainties 18
9、 Figure 3 Square-edged orifice plate with piezometer ring 22 Figure 4 Orifice plates 23 Figure 5 Nozzles 24 Figure 6 Classical Venturi tube 24 Figure 7 Truncated and conventional Venturi nozzle 25 Figure 8 Toroidal throat Venturi nozzle 27 Figure 9 Cylindrical throat Venturi nozzle 27 Figure 10 Prop
10、eller-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 i
11、n 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
12、40 Figure 23 Orifice-and-plug meter 41 Figure 24 Gate-type meter 42BS EN24006:1993 ii BSI 07-1999 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-b
13、eam 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
14、turbine meter 51 Publication(s) referred to Inside back coverBSEN24006:1993 BSI 07-1999 iii 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 ISO4006:1991 “Measurement of fl
15、uid flow in closed conduits Vocabulary and symbols”, published by the International Organization for Standardization (ISO) and supersedes BS5875:1980, which is withdrawn. In 1993 the European Committee for Standardization (CEN) accepted ISO4006:1991as European Standard EN24006:1993. As a consequence
16、 of implementing the European Standard this British Standard is renumbered as BSEN24006and any reference to BS5875:1991should be read as a reference to BSEN24006. Both the English and French texts are given in this British Standard, as presented in the original ISO4006, to facilitate production. A r
17、elated British Standard to ISO 772:1988 is BS 3680 “Measurement of liquid flow in open channels. Part1:1983 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. Com
18、pliance 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, theENtitle page, pages 2 to 54, an inside back cover and a back cover. This standard has been updated (see copyrigh
19、t date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Cross-references International standard Corresponding British Standard ISO 3534:1977 a BS 5532 Statistical terminology Part 1:1978 Glossary of terms relating to probability and
20、general terms relating to statistics (Identical) ISO 5167:1980 b 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 5168:1
21、978 c BS 5844:1980 Methods of measurement of fluid flow: estimation of uncertainty of a flow rate measurement (Identical) a Reference in the text to ISO3534-1is to the revised edition currently in preparation. It is envisaged that, when the revised edition of ISO3534(numbered ISO 3534-1) is publishe
22、d, a revised edition of BS5532-1 will be published. b Reference in the text to ISO5167-1is to the revised edition currently in preparation. It is envisaged that, when the revised edition of ISO5167(numbered ISO 5167-1) is published, a revised edition of BS1042-1.1 will be published. c Reference in t
23、he text to ISO5168is to the revised edition currently in preparation. It is envisaged that, when the revised edition of ISO5168is published, a revised edition of BS5844will be published. 1) A revised edition of BS3680-1 is in preparation.iv blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2
24、4006 June 1993 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 dbit des fluides dans les conduites fermes Vocabulaire et symboles (ISO4006
25、:1991) Durchflumessung von Fluiden in geschlossenen Leitungen Begriffe und Formelzeichen (ISO4006:1991) This European Standard was approved by CEN on1993-06-18. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
26、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, Germ
27、an). 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, G
28、ermany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Co
29、pyright reserved to CEN members Ref. No. EN 24006:1993 EEN24006:1993 BSI 07-1999 2 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 C42/1992,ISO4006:1991 was submitted
30、 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 December1993, and conflicting national standards shall be withdrawn at the latest by December1993. Acc
31、ording 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.EN
32、24006:1993 BSI 07-1999 3EN24006:1993 4 BSI 07-1999EN24006:1993 BSI 07-1999 5EN24006:1993 6 BSI 07-1999EN24006:1993 BSI 07-1999 7EN24006:1993 8 BSI 07-1999EN24006:1993 BSI 07-1999 9EN24006:1993 10 BSI 07-1999EN24006:1993 BSI 07-1999 11EN24006:1993 12 BSI 07-1999EN24006:1993 BSI 07-1999 13EN24006:1993
33、 14 BSI 07-1999EN24006:1993 BSI 07-1999 15EN24006:1993 16 BSI 07-1999EN24006:1993 BSI 07-1999 17EN24006:1993 18 BSI 07-1999EN24006:1993 BSI 07-1999 19EN24006:1993 20 BSI 07-1999EN24006:1993 BSI 07-1999 21EN24006:1993 22 BSI 07-1999EN24006:1993 BSI 07-1999 23EN24006:1993 24 BSI 07-1999EN24006:1993 BS
34、I 07-1999 25EN24006:1993 26 BSI 07-1999EN24006:1993 BSI 07-1999 27EN24006:1993 28 BSI 07-1999EN24006:1993 BSI 07-1999 29EN24006:1993 30 BSI 07-1999EN24006:1993 BSI 07-1999 31EN24006:1993 32 BSI 07-1999EN24006:1993 BSI 07-1999 33EN24006:1993 34 BSI 07-1999EN24006:1993 BSI 07-1999 35EN24006:1993 36 BS
35、I 07-1999EN24006:1993 BSI 07-1999 37EN24006:1993 38 BSI 07-1999EN24006:1993 BSI 07-1999 39EN24006:1993 40 BSI 07-1999EN24006:1993 BSI 07-1999 41EN24006:1993 42 BSI 07-1999EN24006:1993 BSI 07-1999 43EN24006:1993 44 BSI 07-1999EN24006:1993 BSI 07-1999 45EN24006:1993 46 BSI 07-1999EN24006:1993 BSI 07-1
36、999 47EN24006:1993 48 BSI 07-1999EN24006:1993 BSI 07-1999 49EN24006:1993 50 BSI 07-1999EN24006:1993 BSI 07-1999 51EN24006:1993 52 BSI 07-1999EN24006:1993 BSI 07-1999 53EN24006:1993 54 BSI 07-1999BSEN 24006:1993 BSI 07-1999 Publication(s) referred to See national foreword.BS EN 24006:1993 ISO 4006:19
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