EN 60534-2-4:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stellventile für die Prozessregelung -- Teil 2-4: Durchflusskapazität - Inhärente Durchflusskennlinien und StellverhältnisVannes de régulation des processus industriels -- Partie 2-4: Capacité d'écoulement - Caractéristiques intrinsèques de débit et coefficient intrinsèque de réglageIndustrial-process control valves -- Part 2-4: Flow capacity - Inherent flow characteristics and rangeability25.040.40Merjenje in krmiljenje industrijskih postopkovIndustrial process measurement and control23.060.40Pressure regulatorsICS:Ta slovenski standard je istoveten z:EN 60534-2-4:2009SIST EN 60534-2-4:2009en01-september-2009SIST EN 60534-2-4:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD EN 60534-2-4 NORME EUROPÉENNE
EUROPÄISCHE NORM June 2009
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels
© 2009 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60534-2-4:2009 E
ICS 23.060.40; 25.040.40
English version
Industrial-process control valves -
Part 2-4: Flow capacity -
Inherent flow characteristics and rangeability (IEC 60534-2-4:2009)
Vannes de régulation
des processus industriels -
Partie 2-4: Capacité d'écoulement -
Caractéristiques intrinsèques de débit
et coefficient intrinsèque de réglage (CEI 60534-2-4:2009)
Stellventile für die Prozessregelung -
Teil 2-4: Durchflusskapazität -
Inhärente Durchflusskennlinien
und Stellverhältnis (IEC 60534-2-4:2009)
This European Standard was approved by CENELEC on 2009-06-01. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
– 2 – Foreword The text of document 65B/704/FDIS, future edition 2 of IEC 60534-2-4, prepared by SC 65B, Devices & process analysis, of IEC TC 65, Industrial-process measurement, control and automation, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60534-2-4 on 2009-06-01. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop) 2010-03-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2012-06-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60534-2-4:2009 was approved by CENELEC as a European Standard without any modification. __________ SIST EN 60534-2-4:2009

– 3 – EN 60534-2-4:2009
Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60534-1 2005 Industrial-process control valves -
Part 1: Control valve terminology and general considerations EN 60534-1 2005
IEC 60534-2-3 - 1) Industrial-process control valves -
Part 2-3: Flow capacity - Test procedures EN 60534-2-3 1998 2)
1) Undated reference.
2) Valid edition at date of issue.
IEC 60534-2-4Edition 2.0 2009-05INTERNATIONAL STANDARD NORME INTERNATIONALEIndustrial-process control valves –
Part 2-4: Flow capacity – Inherent flow characteristics and rangeability
Vannes de régulation des processus industriels –
Partie 2-4: Capacité d’écoulement – Caractéristiques intrinsèques de débit et coefficient intrinsèque de réglage
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE KICS 23.060.40; 25.040.40 PRICE CODECODE PRIXISBN 2-8318-1039-1
– 2 – 60534-2-4 © IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
INDUSTRIAL-PROCESS CONTROL VALVES –
Part 2-4: Flow capacity –
Inherent flow characteristics and rangeability
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60534-2-4 has been prepared by subcommittee 65B: Devices and process analysis, of IEC technical committee 65: Industrial-process measurement, control and automation. This second edition cancels and replaces the first edition published in 198
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