DIN EN ISO 9905 A1-2011 Technical specifications for centrifugal pumps - Class I - Amendment 1 (ISO 9905 1994 AMD 1 2011) German version EN ISO 9905 1997 A1 2011《离心泵技术规范 I级 修订条款1(I.pdf

《DIN EN ISO 9905 A1-2011 Technical specifications for centrifugal pumps - Class I - Amendment 1 (ISO 9905 1994 AMD 1 2011) German version EN ISO 9905 1997 A1 2011《离心泵技术规范 I级 修订条款1(I.pdf》由会员分享，可在线阅读，更多相关《DIN EN ISO 9905 A1-2011 Technical specifications for centrifugal pumps - Class I - Amendment 1 (ISO 9905 1994 AMD 1 2011) German version EN ISO 9905 1997 A1 2011《离心泵技术规范 I级 修订条款1(I.pdf（6页珍藏版）》请在麦多课文档分享上搜索。

1、November 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!$vT it was approved by CEN on 17 April 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 c

3、oncerning such national standards may be obtained 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 it

4、s 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,

5、Italy, Latvia, Lithuania, Luxembourg, Malta, 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-

6、1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9905:1997/A1:2011: EEN ISO 9905:1997/A1:2011 (E) 2 Contents PageForeword3DIN EN ISO 9905/A1:2011-11 EN ISO 9905:1997/A1:2011 (E) 3 Foreword This document (EN IS

7、O 9905:1997/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 9905:1997 shall be given the status of a national standard, either b

8、y 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 C

9、ENELEC 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 Rep

10、ublic, 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 9905:1994/AMD 1

11、:2011 has been approved by CEN as a EN ISO 9905:1997/A1:2011 without any modification. DIN EN ISO 9905/A1:2011-11 EN ISO 9905:1997/A1:2011 (E) 4 AMENDMENT 1 Pages 1 and 2, Normative references Delete the reference to ISO 427:1983. Delete the reference to ISO 2372:1974. Replace the references to ISO

12、2548:1973 and ISO 3555:1977 with the following: ISO 9906:1), Rotodynamic pumps Hydraulic performance acceptance tests Grades 1, 2 and 3 Add the footnote “1)To be published. (Revision of ISO 9906:1999)”. Page 5, 4.1.2 Replace “NPSHR shall be based on cold water according to ISO 2548 and/or ISO 35551)

13、unless otherwise agreed.” with “NPSHR shall be based on cold water in accordance with ISO 9906 unless otherwise agreed.”. Delete footnote 1. Page 9, Table 1 Delete from the title of Table 1 “(based on ISO 2372)”. Page 28, 6.3.4.6 Replace “(For definition of K see 3.2.6 of ISO 2548:1973.)” with “(For

14、 definition of K see ISO 9906:, 3.2.29.)”. Page 28, 6.3.4.8 Replace “Hydraulic performance tests shall be in accordance with ISO 2548 or ISO 35552).” with “Hydraulic performance tests shall be in accordance with ISO 9906.”. Delete footnote 2. Page 28, 6.3.5.3 Replace “NPSH test shall be in accordanc

15、e with ISO 2548 or ISO 35552).” with “NPSH test shall be in accordance with ISO 9906.”. Page 46, Figure E.1 Delete from the title of Figure E.1 “(for the definition of rms, see ISO 2372)”. Page 68, Table J.1 In the fourth column, row entitled “Bronze”, replace “ISO 427” with “”. DIN EN ISO 9905/A1:2011-11