EN ISO 2151:2008

SLOVENSKI STANDARD
01-november-2008
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SIST EN ISO 2151:2004
SIST EN ISO 2151:2004/AC:2006
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Acoustics - Noise test code for compressors and vacuum pumps - Engineering method
(Grade 2) (ISO 2151:2004)
Kompressoren und Vakuumpumpen - Bestimmung der Geräuschemission - Verfahren
der Genauigkeitsklasse 2 (ISO 2151:2004)
Acoustique - Code d'essai acoustique pour les compresseurs et les pompes à vide -
Méthode d'expertise (classe de précision 2) (ISO 2151:2004)
Ta slovenski standard je istoveten z: EN ISO 2151:2008
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
23.140 .RPSUHVRUMLLQSQHYPDWLþQL Compressors and pneumatic
VWURML machines
23.160 Vakumska tehnologija Vacuum technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 2151
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2008
ICS 17.140.20; 23.140 Supersedes EN ISO 2151:2004
English Version
Acoustics - Noise test code for compressors and vacuum pumps
- Engineering method (Grade 2) (ISO 2151:2004)
Acoustique - Code d'essai acoustique pour les Kompressoren und Vakuumpumpen - Bestimmung der
compresseurs et les pompes à vide - Méthode d'expertise Geräuschemission - Verfahren der Genauigkeitsklasse 2
(classe de précision 2) (ISO 2151:2004) (ISO 2151:2004)
This European Standard was approved by CEN on 18 July 2008.
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 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 translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official 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, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2151:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37 EEC.4
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .5

Foreword
The text of ISO 2151:2004 has been prepared by Technical Committee ISO/TC 118 “Compressors, pneumatic
tools and pneumatic machines” of the International Organization for Standardization (ISO) and has been taken
over as EN ISO 2151:2008 by Technical Committee CEN/TC 232 “Compressors - Safety” the secretariat of
which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn
at the latest by December 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2151:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EC Directive(s).
For relationship with EC Directives, see informative Annex ZA and ZB, which are integral part of this
document.
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, 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 Kingdom.
Endorsement notice
The text of ISO 2151:2004 has been approved by CEN as a EN ISO 2151:2008 without any modification.

Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37 EEC

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 Requirement ESR
1.7.4.f) of the New Approach Directive 98/37 EEC.
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 given in Table ZA.1 confers, within the limits of the scope of this standard, a
presumption of conformity with the corresponding 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.
Annex ZB
(informative)
Relationship between this 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 Requirement ESR
1.7.4.2 u) and of the New Approach Directive 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 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 standard.
INTERNATIONAL ISO
STANDARD 2151
Second edition
2004-02-01
Acoustics — Noise test code for
compressors and vacuum pumps —
Engineering method (Grade 2)
Acoustique — Code d'essai acoustique pour les compresseurs et les
pompes à vide — Méthode d'expertise (classe de précision 2)

Reference number
ISO 2151:2004(E)
©
ISO 2004
ISO 2151:2004(E)
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ISO 2151:2004(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references. 2
3 Terms and definitions. 2
4 Sound power level determination . 5
4.1 General. 5
4.2 Uncertainty. 6
4.3 Test arrangement. 6
5 Emission sound pressure level determination at the work station . 7
5.1 Work station. 7
5.2 Determination of L from L . 8
pWSA WA
5.3 Method for determination of L when L is not to be determined . 9
pWSA WA
6 Mounting, loading and operating conditions of compressor or vacuum pump during
noise tests. 9
6.1 General. 9
6.2 Mounting. 9
6.3 Loading and operating conditions . 9
7 Test report. 10
8 Declaration and verification of noise emission values . 10
Annex A (informative) Example test reports. 11
Annex B (informative) Model form for declared noise emission values. 17
Annex C (normative) Parallelepiped measurement surface . 18
Annex D (normative) Hemispherical measurement surface . 20
Annex E (informative) Examples of reference box for different machines. 22
Bibliography . 25

ISO 2151:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this documen
...