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)This British Standardwas published under theauthori
2、ty 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 Standard is the UK implementation of EN ISO 11691:2009.It is identical to ISO 11691:1995. It super
3、sedes BS EN ISO 11691:1997which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/4, Machinery noise.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the neces
4、sary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 11691August 2009ICS 91.120.20 Supersedes EN ISO 11691:1995 English VersionAcoustics -
5、Measurement of insertion loss of ducted silencerswithout flow - Laboratory survey method (ISO 11691:1995)Acoustique - Dtermination de la perte dinsertion desilencieux en conduit sans coulement - Mthode demesurage en laboratoire (ISO 11691:1995)Akustik - Messung des Einfgungsdmpfungsmaes vonSchalldmp
6、fern in Kanlen ohne Strmung -Laborverfahren der Genauigkeitsklasse 3 (ISO11691:1995)This European Standard 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 na
7、tional standard without any alteration. Up-to-date lists and bibliographical references concerning such 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
8、any other language made by translationunder the responsibility of a CEN member into its own language and 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, Est
9、onia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISC
10、HES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 11691:2009: EBS EN ISO 11691:2009EN ISO 11691:2009 (E) 3 Foreword The text of ISO 11691:1995 has been
11、 prepared 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
12、national 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
13、patent 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 ess
14、ential 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 Euro
15、pean 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
16、 Kingdom. Endorsement notice The text of ISO 11691:1995 has been approved by CEN as a EN ISO 11691:2009 without any modification. BS EN ISO 11691:2009EN ISO 11691:2009 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC Thi
17、s 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 Approach Directive 98/37/EC, amended by 98/79/EC on machinery. Once this standard is cited in th
18、e 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 confers, within the limits of the scope of this standard, a presumption of conformity with the rele
19、vant 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 standard. BS EN ISO 11691:2009EN ISO 11691:2009 (E) 5 Annex ZB (informative) Relationship between t
20、his European Standard and the Essential Requirements of EU Directive 2006/42/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 Approach Dire
21、ctive 2006/42/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 confers, within the limits of the s
22、cope 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 standard. BS EN ISO 11691:2009BS EN I
23、SO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009BS EN ISO 11691:2009This page has been intentionally left blank BS EN ISO11691:2009BSI
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