DIN EN ISO 5167-5-2016 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 5 Cone meters (ISO 5167-5.pdf

1、October 2016 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.120.10!%n4“2577517www.din.deD

2、IN EN ISO 5167-5Measurement of fluid flow by means of pressure differential devices inserted in circular crosssection conduits running full Part 5: Cone meters (ISO 51675:2016);English version EN ISO 51675:2016,English translation of DIN EN ISO 5167-5:2016-10Durchflussmessung von Fluiden mit Drossel

3、gerten in voll durchstrmten Leitungen mit Kreisquerschnitt Teil 5: KonusDurchflussmesser (ISO 51675:2016);Englische Fassung EN ISO 51675:2016,Englische bersetzung von DIN EN ISO 5167-5:2016-10Mesure de dbit des fluides au moyen dappareils dprimognes insrs dans des conduites en charge de section circ

4、ulaire Partie 5: Cnes de mesure (ISO 51675:2016);Version anglaise EN ISO 51675:2016,Traduction anglaise de DIN EN ISO 5167-5:2016-10www.beuth.deDocument comprises 22 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.09.16 DIN EN

5、ISO 5167-5:2016-10 2 A comma is used as the decimal marker. National foreword This document (EN ISO 5167-5:2016) has been prepared by Technical Committee ISO/TC 30 “Measurement of fluid flow in closed conduits” in collaboration with Technical Committee CEN/SS F05 “Measuring instruments” (Secretariat

6、: CCMC). The responsible German body involved in its preparation was DIN-Normenausschuss Technische Grundlagen (DIN Standards Committee Technical Fundamentals), Working Committee NA 152-04-02 AA Durchfluss und Menge. The DIN Standards corresponding to the International Standards referred to in this

7、document are as follows: ISO 4288 DIN EN ISO 4288 ISO 5167-1 DIN EN ISO 5167-1 ISO/IEC 17025 DIN EN ISO/IEC 17025 National Annex NA (informative) Bibliography DIN EN ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface

8、texture DIN EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements DIN EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories EU

9、ROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5167-5 March 2016 ICS 17.120.10 English Version Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 5: Cone meters(ISO 5167-5:2016) Mesure de dbit des fluides au moy

10、en dappareils dprimognes insrs dans des conduites en charge de section circulaire - Partie 5: Cnes de mesure(ISO 5167-5:2016) Durchflussmessung von Fluiden mit Drosselgerten in voll durchstrmten Leitungen mit Kreisquerschnitt - Teil 5: Konus-Durchflussmesser (ISO 5167-5:2016) This European Standard

11、was approved by CEN on 4 February 2016. 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

12、 national standards may be obtained on application to the CEN-CENELEC Management Centre 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

13、language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gr

14、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG

15、 CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5167-5:2016 EForeword 4Introduction 51 Scope .62 Normative references 63 Terms and definitions .64 Principle

16、s of the method of measurement and computation 75 Cone meters .85.1 Field of application 85.2 General shape .95.3 Material and manufacture 125.4 Pressure tappings 135.5 Discharge coefficient, C 135.5.1 Limits of use 135.5.2 Discharge coefficient of the cone meter .135.6 Expansibility (expansion) fac

17、tor, .145.7 Uncertainty of the discharge coefficient, C .145.8 Uncertainty of the expansibility (expansion) factor, 145.9 Pressure loss 146 Installation requirements156.1 General 156.2 Minimum upstream and downstream straight lengths for installations between various fittings and the cone meter .156

18、.2.1 General.156.2.2 Single 90 bend .166.2.3 Two 90 bends in perpendicular planes .166.2.4 Concentric expander .166.2.5 Partially closed valves 166.3 Additional specific installation requirements for cone meters 166.3.1 Circularity and cylindricality of the pipe .166.3.2 Roughness of the upstream an

19、d downstream pipe 166.3.3 Positioning of a thermowell 167 Flow calibration of cone meters 177.1 General 177.2 Test facility .177.3 Meter installation.177.4 Design of the test programme .177.5 Reporting the calibration results .187.6 Uncertainty analysis of the calibration .187.6.1 General.187.6.2 Un

20、certainty of the test facility .187.6.3 Uncertainty of the cone meter 18Annex A (informative) Table of expansibility (expansion) factor .19Bibliography .20Contents Page2European foreword .3DIN EN ISO 5167-5:2016-10 EN ISO 5167-5:2016 (E) European foreword This document (EN ISO 5167-5:2016) has been

21、prepared by Technical Committee ISO/TC 30 “Measurement of fluid flow in closed conduits“. 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 September 2016, and conflicting national standards shall b

22、e withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Reg

23、ulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,

24、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 5167-5:2016 has been approved by CEN as EN ISO 5167-5:2016 without any modification. 3DIN EN

25、ISO 5167-5:2016-10 EN ISO 5167-5:2016 (E) ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member b

26、ody interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electro

27、technical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of I

28、SO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held re

29、sponsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information giv

30、en for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the followin

31、g URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 30, Measurement of fluid flow in closed conduits, Subcommittee SC 2, Pressure differential devices.The first edition of ISO 5167-5 is complementary to ISO 5167-1, ISO 5167-2, ISO 5167-3, and ISO 5167-4.I

32、SO 5167 consists of the following parts, under the general title Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full: Part 1: General principles and requirements Part 2: Orifice plates Part 3: Nozzles and Venturi nozzles Part 4

33、: Venturi tubes Part 5: Cone meters4DIN EN ISO 5167-5:2016-10 EN ISO 5167-5:2016 (E) IntroductionThis International Standard, divided into five parts, covers the geometry and method of use (installation and operating conditions) of orifice plates, nozzles, Venturi tubes, and cone meters when they ar

34、e inserted in a conduit running full to determine the flow rate of the fluid in the conduit. It also gives necessary information for calculating the flow rate and its associated uncertainty.This International Standard is applicable only to pressure differential devices in which the flow remains subs

35、onic throughout the measuring section and where the fluid can be considered as single-phase, but it is not applicable to the measurement of pulsating flow. Furthermore, each of these devices can only be used within specified limits of pipe size and Reynolds number.This International Standard deals w

36、ith devices for which 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. However, for cone meters calibrated in acc

37、ordance with Clause 7, a wider range of pipe size, , and Reynolds number may be considered.The devices introduced into the pipe are called “primary devices”. The term primary device also includes the pressure tappings. All other instruments or devices required for the measurement are known as “secon

38、dary devices”. This International Standard covers primary devices; secondary devices15will be mentioned only occasionally.This International Standard is divided into the following five parts:a) ISO 5167-1 gives general terms and definitions, symbols, principles, and requirements as well as methods o

39、f measurement and uncertainty that are to be used in conjunction with ISO 5167-1, ISO 5167-2, ISO 5167-3, ISO 5167-4, and ISO 5167-5.b) ISO 5167-2 specifies requirements for orifice plates, which can be used with corner pressure tappings, D and D/2 pressure tappings1), and flange pressure tappings.c

40、) ISO 5167-3 specifies requirements for ISA 1932 nozzles2), long radius nozzles, and Venturi nozzles, which differ in shape and in the position of the pressure tappings.d) ISO 5167-4 specifies requirements for classical Venturi tubes3).e) This part of ISO 5167 specifies requirements for cone meters

41、and includes a section on calibration.Aspects of safety are not dealt with in ISO 5167 (all parts). It is the responsibility of the user to ensure that the system meets applicable safety regulations.1) Orifice plates with vena contracta pressure tappings are not considered in ISO 5167 (all parts).2)

42、 ISA is the abbreviation for the International Federation of the National Standardizing Associations, which was succeeded by ISO in 1946.3) In the USA, the classical Venturi tube is sometimes called the Herschel Venturi tube.5DIN EN ISO 5167-5:2016-10 EN ISO 5167-5:2016 (E) 1 ScopeThis part of ISO 5

43、167 specifies the geometry and method of use (installation and operating conditions) of cone meters when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.As the uncertainty of an uncalibrated cone meter might be too high for a particular appl

44、ication, it might be deemed essential to calibrate the flow meter in accordance with Clause 7.This part of ISO 5167 also provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ISO 5167-1.This part of ISO 5167 is applicable only t

45、o cone meters in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. Uncalibrated cone meters can only be used within specified limits of pipe size, roughness, , and Reynolds number. This part of ISO 5167 is not applicable to the me

46、asurement of pulsating flow. It does not cover the use of uncalibrated cone meters in pipes sized less than 50 mm or more than 500 mm, or where the pipe Reynolds numbers are below 8 104or greater than 1,2 107.A cone meter is a primary device which consists of a cone-shaped restriction held concentri

47、cally in the centre of the pipe with the nose of the cone upstream. The design of cone meter defined in this part of ISO 5167 has one or more upstream pressure tappings in the wall, and a downstream pressure tapping positioned in the back face of the cone with the connection to a differential pressu

48、re transmitter being a hole through the cone to the support bar, and then up through the support bar.Alternative designs of cone meters are available; however, at the time of writing, there is insufficient data to fully characterize these devices, and therefore, these meters shall be calibrated in a

49、ccordance with Clause 7.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4006, Measurement of fluid flow in closed conduits Vocabulary and symbolsISO 5167-1:2003, Measurement