BS EN IS0 20456:2019 BSl Standards Publication Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids bsi. BS EN IS0 20456:2019 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN IS0 20456:2019 It is identical to IS0 20456:2017. It supersedes BS EN IS0 6817:1997, BS IS0 13359:1998 and BS EN 29104:1993, which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee CPI/30/5, Velocity and Mass Methods. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2019 Published by BSI Standards Limited 2019 ISBN978 0 539 041675 ICS17.120.10 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2019. Amendments/corrigenda issued since publication Date Textaffected BS EN IS0 20456:2019 EUROPEANSTANDARD EN IS0 20456 NORME EUROPEENNE EUROPAISCHE NORM October2019 ICS 17.120.10 Supersedes EN 29104:1993, EN IS0 6817:1995 English Version Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (IS0 20456:2017) Mesurage du debit des fluides dans les conduites Messung des Durchflusses in geschlossenen Leitungen fermées-Lignes directricespourI'utilisation des - Richtlinie fuir den Einsatz von elektromagnetischen débitmetres électromagnétiques dans les liquides Durchflussmessgeraten fir konduktive Fluide (ISO conducteurs (IS0 20456:2017) 20456:2017) This European Standard was approved by CEN on 26 August 2019. 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 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEEFOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHESKOMITEEFURNORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @2019CEN All rights of exploitation in any form and by any means reserved Ref. No. EN IS0 20456:2019 E worldwide for CEN national Members. BS EN IS0 20456:2019 EN IS0 20456:2019 (E) European foreword The text of IS0 20456:2017 has been prepared by Technical Committee IS0/TC 30 "Measurement of fluid flow in closed conduits" of the International Organization for Standardization (iso) and has been 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 April 2020, and conflicting national standards shall be withdrawn at the latest by April 2020. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 29104:1993 and EN IS