BS EN ISO BRITISH STANDARD 2151:2004 Incorporating Corrigenda Nos.1 and 2 Acoustics Noise test code for compressors and vacuum pumps Engineering method (Grade 2) TheEuropeanStandardENIS02151:2004has the statusofa BritishStandard ICS 17.140.20; 23.140 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSENIS02151:2004 National foreword This British Standard is the official English language version of ENIS02151:2004, including Corrigendum March 2004 and January 2006. It is identical with ISO 2151:2004. The UK participation in its preparation was entrusted to Technical Committee MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum technology, which has the responsibility to: aid enquirers to understand the text: present to the responsible international/European committee any enquiries on the interpretation, or proposals for change,and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BsI Catalogue under the section entitled "International Standards Correspondence Index", or by using the"Search"facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immu- nity fromlegal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 26, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued sincepublication This Britist Standard was published under the authority of the Standards Policy and Amd. No. Date Comments Strategy Committee on 19 March 2004 15134 14 April 2004 Correction to ENISO foreword page and Corrigendum No. 1 revised Annex ZA BSI 2006 16288 June2006 Change to Annex ZA Corrigendum No. 2 ISBN0 580435628 EUROPAISCHENORM EUROPEANSTANDARD EN ISO 2151 NORME EUROPEENNE February2004 ICS 17.140.20; 23.140 Including Corrigenda March 2004 and January 2006 English version Acoustics-Noisetestcodeforcompressorsandvaccumpumps Engineeringmethod(grade2)(iSO2151:2004) Acoustique - Code d'essai acoustique pour les Kompressoren und Vakuumpumpen - Bestimmung der compresseurs etles pompes a vide - Methode d'éxpertise Gerauschemission-VerfahrenderGenauigkeitsklasse2 (classe de precision 2) (ISo 2151:2004) (ISO 2151:2004) This European Standard was approved by CEN on 16 January 2004 CEN 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 CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. cer EUROPEAN COMMITTEE FOR STANDARDIZATION COMITEEUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels All rights of exploitation in any form and by any means reserved Ref.No.EN ISO