1、December 2011 Translation by DIN-Sprachendienst.English price group 5No 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).IC
2、S 23.080!$xU+“1855008www.din.deDDIN EN ISO 9908/A1Technical specifications for centrifugal pumps Class III Amendment 1 (ISO 9908:1993/AMD 1:2011)English translation of DIN EN ISO 9908/A1:2011-12Technische Anforderungen fr Kreiselpumpen Klasse III nderung 1 (ISO 9908:1993/AMD 1:2011)Englische bersetz
3、ung von DIN EN ISO 9908/A1:2011-12Spcifications techniques pour pompes centrifuges Classe III Amendement 1 (ISO 9908:1993/AMD 1:2011)Traduction anglaise de DIN EN ISO 9908/A1:2011-12ModifiesDIN ISO 9908:1998-04www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall b
4、e considered authoritative.611.11 DIN EN ISO 9908/A1:2011-12 2 A comma is used as the decimal marker. National foreword This Amendment A1:2011 to EN ISO 9908:1997 has been prepared by Technical Committee ISO/TC 115 “Pumps” in collaboration with Technical Committee CEN/TC 197 “Pumps” (Secretariat: AF
5、NOR, France). The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-11-01 AA Kreiselpumpen of Section Pumpen. The International Standards referred to in this document and taken over as Europ
6、ean Standards have been published as the corresponding DIN EN ISO Standards with the same number. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9908:1997/A1 April 2011 ICS 23.080 English Version Technical specifications for centrifugal pumps - Class III - Amendment 1 (ISO 9908:1993/AMD 1:
7、2011) Spcifications techniques pour pompes centrifuges - Classe III - Amendement 1 (ISO 9908:1993/AMD 1:2011)Technische Anforderungen fr Kreiselpumpen - Klasse III -nderung 1 (ISO 9908:1993/AMD 1:2011) This amendment A1 modifies the European Standard EN ISO 9908:1997; it was approved by CEN on 17 Ap
8、ril 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obt
9、ained on application to the CEN-CENELEC Management Centre or to any CEN member. This amendment 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-CENEL
10、EC 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,
11、 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploit
12、ation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9908:1997/A1:2011: EEN ISO 9908:1997/A1:2011 (E) Contents Page Foreword 3DIN EN ISO 9908/A1:2011-12 2 AMENDMENT 14 EN ISO 9908:1997/A1:2011 (E) Foreword DIN EN ISO 9908/A1:2011-12 3 This document (EN ISO
13、9908:1997/A1:2011) has been prepared by Technical Committee ISO/TC 115 “Pumps” in collaboration with Technical Committee CEN/TC 197 “Pumps” the secretariat of which is held by AFNOR. This Amendment to the European Standard EN ISO 9908:1997 shall be given the status of a national standard, either by
14、publication of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CEN
15、ELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Repub
16、lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 9908:1993/AMD 1:2
17、011 has been approved by CEN as a EN ISO 9908:1997/A1:2011 without any modification. AMENDMENT 1 Page 1, Normative references Delete the reference to ISO 2372:1974. Replace the references to ISO 2548:1973 and ISO 3555:1977 with the following: ISO 9906:1), Rotodynamic pumps Hydraulic performance acce
18、ptance tests Grades 1, 2 and 3 Add the footnote “1) To be published. (Revision of ISO 9906:1999)” Page 2, 4.1.2 Replace “The NPSHR shall be based on cold water as specified in ISO 2548 and ISO 3555.” with “The NPSHR shall be based on cold water as specified in ISO 9906.”. Page 4, Table 1 Delete Tabl
19、e footnote 1 “Based on ISO 2372.” and renumber Table footnote 2 as Table footnote 1. Page 7, Clause 6 In the third paragraph, replace “If a hydraulic performance test is required it shall be made in accordance with ISO 2548 and ISO 3555 Class II for clean cold water.” with “If a hydraulic performance test is required it shall be carried out in accordance with ISO 9906 class 2 for clean cold water.”. EN ISO 9908:1997/A1:2011 (E) DIN EN ISO 9908/A1:2011-12 4
