1、BS EN ISO11691:2009ICS 17.140.20; 91.120.20; 91.140.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAcoustics Measurement ofinsertion loss of ductedsilencers withoutflow Laboratorysurvey method (ISO11691:1995)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDAR
2、DS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 May2010. BSI 2010ISBN 978 0 580 67688 8Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 11691:2009National forewordThis British
3、 Standard is the UK implementation of EN ISO 11691:2009.It is identical to ISO 11691:1995. It supersedes BS EN ISO 11691:1997which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/4, Machinery noise.A list of organizations represented on this committee ca
4、n be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHI
5、NA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 11691August 2009ICS 91.120.20 Supersedes EN ISO 11691:1995 English VersionAcoustics - Measurement of insertion loss of ducted silencerswithout flow - Laboratory survey method (ISO 11691:19
6、95)Acoustique - Dtermination de la perte dinsertion desilencieux en conduit sans coulement - Mthode demesurage en laboratoire (ISO 11691:1995)Akustik - Messung des Einfgungsdmpfungsmaes vonSchalldmpfern in Kanlen ohne Strmung -Laborverfahren der Genauigkeitsklasse 3 (ISO11691:1995)This European Stan
7、dard was approved by CEN on 3 August 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning suc
8、h nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language a
9、nd notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg
10、, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of expl
11、oitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 11691:2009: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009EN ISO 11691:2009 (E) 3 Foreword The text of ISO 11691:1995 has been pr
12、epared by Technical Committee ISO/TC 43 “Acoustics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11691:2009 by Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS. This European Standard shall be given the status of a nat
13、ional standard, either by publication of an identical text or by endorsement, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat
14、ent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 11691:1995. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essent
15、ial requirements of EC Directives. For relationship with EC Directives, see informative Annexes ZA and ZB, which are integral parts of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europea
16、n Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, 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 Ki
17、ngdom. Endorsement notice The text of ISO 11691:1995 has been approved by CEN as a EN ISO 11691:2009 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009EN ISO 11691:2009 (E) 4 Annex ZA (informative) Relatio
18、nship between this European Standard and the Essential Requirements of EU Directive 98/37/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New
19、Approach Directive 98/37/EC, amended by 98/79/EC on machinery. Once this standard is cited in the Official Journal of the European Communities under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard con
20、fers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements of that Directive and associated EFTA regulations. WARNING - Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this sta
21、ndard. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009EN ISO 11691:2009 (E) 5 Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard ha
22、s been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery. Once this standard is cited in the Official Journal of the European Commun
23、ities under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements of that Direc
24、tive and associated EFTA regulations. WARNING Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009BS EN ISO 116
25、91:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009BS EN ISO 11691:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009BS EN ISO 11691:2009Licensed Copy:
26、Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009BS EN ISO 11691:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009BS EN ISO 11691:2009Licensed Copy: Wang Bin, ISO/EXCHANGE
27、 CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009BS EN ISO 11691:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO 11691:2009This page has been intentionally left blankLicensed Copy: Wang Bin, ISO/EXCHANG
28、E CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSIBS EN ISO11691:2009BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards InstitutionBSI is the independent national body responsible for preparing BritishStandards. I
29、t presents the UK view on standards in Europe and at theinternational level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments oreditions.It is the constant aim of BS
30、I to improve the quality of our products and services.We would be grateful if anyone finding an inaccuracy or ambiguity while usingthis British Standard would inform the Secretary of the technical committeeresponsible, the identity of which can be found on the inside front cover. Tel:+44 (0)20 8996
31、9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensuresthat subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should beaddressed to Customer Servic
32、es. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 89967001 Email: You may also buy directly using a debit/creditcard from the BSI Shop on the Website http:/ response to orders for international standards, it is BSI policy to supply theBSI implementation of those that have been published as British Stand
33、ards,unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European andinternational standards through its Library and its Technical Help to ExportersService. Various BSI electronic information services are also available whichgive details on all it
34、s products and services. Contact Information Centre. Tel:+44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: Subscribing members of BSI are kept up to date with standards developmentsand receive substantial discounts on the purchase price of standards. For detailsof these and other benefits contact
35、Membership Administration. Tel: +44 (0)208996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards via British StandardsOnline can be found at http:/ information about BSI is available on the BSI website at http:/.CopyrightCopyright subsists in all BSI public
36、ations. BSI also holds the copyright, in theUK, of the publications of the international standardization bodies. Except aspermitted under the Copyright, Designs and Patents Act 1988 no extract maybe reproduced, stored in a retrieval system or transmitted in any form or by anymeans electronic, photoc
37、opying, recording or otherwise without prior writtenpermission from BSI.This does not preclude the free use, in the course of implementing the standard,of necessary details such as symbols, and size, type or grade designations. Ifthese details are to be used for any other purpose than implementation then theprior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright and Licensing Manager.Tel: +44 (0)20 8996 7070 Email: Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 26/08/2010 02:12, Uncontrolled Copy, (c) BSI
