1、March 2011 Translation by DIN-Sprachendienst.English price group 21No 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).ICS
2、17.140.01!$n:*“1752307www.din.deDDIN EN ISO 3746Acoustics Determination of sound power levels and sound energy levels of noisesources using sound pressure Survey method using an enveloping measurement surface over areflecting plane (ISO 3746:2010)English translation of DIN EN ISO 3746:2011-03Akustik
3、 Bestimmung der Schallleistungs- und Schallenergiepegel von Geruschquellen ausSchalldruckmessungen Hllflchenverfahren der Genauigkeitsklasse 3 ber einer reflektierenden Ebene(ISO 3746:2010)Englische bersetzung von DIN EN ISO 3746:2011-03Acoustique Dtermination des niveaux de puissance acoustique et
4、des niveaux dnergie acoustiquemis par les sources de bruit partir de la pression acoustique Mthode de contrle employant une surface de mesure enveloppante au-dessus dunplan rflchissant (ISO 3746:2010)Traduction anglaise de DIN EN ISO 3746:2011-03SupersedesDIN EN ISO 3746:2009-11www.beuth.deDocument
5、comprises pagesIn case of doubt, the German-language original shall be considered authoritative.5703.11 DIN EN ISO 3746:2011-03 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 43 “Acoustics”, Subcommittee SC 1 “Noise” (Secretar
6、iat: DS, Denmark), Working Group WG 28 “Basic machinery noise emission standards” in collaboration with Technical Committee CEN/TC 211 “Acoustics” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the Normenausschuss Akustik, Lrmminderung und Schwingungstechnik
7、im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI), Working Committee NA 001-01-04 AA Geruschemission von Maschinen und Anlagen; Messung, Minderung, Datensammlung. The original ISO document ISO 3746:2010 contains errors in Equation (11) (it should
8、read NMinstead of n), and Equation (17) (it should read Neinstead of N). These have been corrected in the German version of DIN EN ISO 3746:2010, and correspondingly in the English version. The DIN Standards corresponding to the International Standards referred to in this document are as follows: IS
9、O 3740 DIN EN ISO 3740 ISO 7574-4 DIN EN 27574-4 ISO 3741 DIN EN ISO 3741 ISO 9614-1 DIN EN ISO 9614-1 ISO 3743-1 DIN EN ISO 3743-1 ISO 9614-2 DIN EN ISO 9614-2 ISO 3743-2 DIN EN ISO 3743-2 ISO 9614-3 DIN EN ISO 9614-3 ISO 3744 DIN EN ISO 3744 ISO 11200 DIN EN ISO 11200 ISO 3745 DIN EN ISO 3745 ISO
10、11201 DIN EN ISO 11201 ISO 3747 DIN EN ISO 3747 ISO 11202 DIN EN ISO 11202 ISO 4871 DIN EN ISO 4871 ISO 11203 DIN EN ISO 11203 ISO 11204 DIN EN ISO 11204 Standards series ISO 5725 Standard series DIN ISO 5725 ISO 12001 DIN EN ISO 12001 ISO 6926 DIN EN ISO 6926 ISO 80000-8 DIN EN ISO 80000-8 ISO 7574
11、-1 DIN EN 27574-1 IEC 60942 DIN EN 60942 ISO 7574-2 DIN EN 27574-2 IEC 61672-1 DIN EN 61672-1 ISO 7574-3 DIN EN 27574-3 ISO/IEC Guide 98-3 DIN V ENV 13005 The national standards are given in Annex NA “Bibliography”. Amendments This standard differs from DIN EN ISO 3746:2009-11 as follows: a) the det
12、ermination of sound energy levels has been included; b) specifications relating to the measurement uncertainty have been extended and a GUM-based approach has been included; c) the previous qualification procedures for the acoustic environment have been reduced to a simplified method for the determi
13、nation of the environmental correction (Annex A); d) specifications relating to microphone positions on a quarter-hemispherical measurement surface (sound source located in a corner) have been included; e) the former Annex D “Guidelines for the detection of impulsive noise” has been deleted; sDIN EN
14、 ISO 3746:2011-03 3 added; g) the standard has been editorially revised. Previous editions DIN 45635: 1970-03 DIN 45635-1: 1972-01, 1984-04 DIN EN ISO 3746: 1995-12, 2009-11 National Annex NA (informative) Bibliography DIN V ENV 13005, Guide to the expression of uncertainty in measurement DIN EN 275
15、74-1, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 1: General considerations and definitions DIN EN 27574-2, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment
16、 Part 2: Methods for stated values for individual machines DIN EN 27574-3, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) method for stated values for batches of machines DIN EN 27574-4, Acoustics Statis
17、tical methods for determining and verifying stated noise emission values of machinery and equipment Part 4: Methods for stated values for batches of machines DIN EN 60942, Electroacoustics Sound calibrators DIN EN 61672-1, Electroacoustics Sound level meters Part 1: Specifications DIN EN ISO 3740, A
18、coustics Determination of sound power levels of noise sources Guidelines for the use of basic standards DIN EN ISO 3741, Acoustics Determination of sound power levels of noise sources using sound pressure Precision methods for reverberation rooms DIN EN ISO 3743-1, Acoustics Determination of sound p
19、ower levels of noise sources Engineering methods for small, movable sources in reverberant fields Part 1: Comparison method for hard-walled test rooms DIN EN ISO 3743-2, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources
20、 in reverberant fields Part 2: Methods for special reverberation test rooms DIN EN ISO 3744, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering method in an essential free field over a reflecting plane f) a new Annex D “Guidelines on the development of in
21、formation on measurement uncertainty” has been DIN EN ISO 3746:2011-03 4 DIN EN ISO 3745, Acoustics Determination of sound power levels of noise sources using sound pressure Precision methods for anechoic and hemi-anechoic rooms DIN EN ISO 3747, Acoustics Determination of sound power levels of noise
22、 sources using sound pressure Comparison method for use in situ DIN EN ISO 4871, Acoustics Declaration and verification of noise emission values of machinery and equipment DIN EN ISO 6926, Acoustics Requirements for the performance and calibration of reference sound sources used for the determinatio
23、n of sound power levels DIN EN ISO 9614-1, Acoustics Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete points DIN EN ISO 9614-2, Acoustics Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanni
24、ng DIN EN ISO 9614-3, Acoustics Determination of sound power levels of noise sources using sound intensity Part 3: Precision method for measurement by scanning DIN EN ISO 11200, Acoustics Noise emitted by machinery and equipment Guidelines for the use of basic standards for the determination of emis
25、sion sound pressure levels at a work station and at other specified positions DIN EN ISO 11201, Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane w
26、ith negligible environmental corrections DIN EN ISO 11202, Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections DIN EN ISO 11203, Acoustics Noise emitted by
27、 machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level DIN EN ISO 11204, Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other s
28、pecified positions applying accurate environmental corrections DIN EN ISO 12001, Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code DIN EN ISO 80000-8, Quantities and units Part 8: Acoustics DIN ISO 5725 (all parts), Accuracy (trueness and
29、 precision) of measurement methods and results EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3746 December 2010 ICS 17.140.01 Supersedes EN ISO 3746:2009English Version Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey metho
30、d using an enveloping measurement surface over a reflecting plane (ISO 3746:2010) Acoustique Dtermination des niveaux de puissance acoustique et des niveaux dnergie acoustique mis par les sources de bruit partir de la pression acoustique Mthode de contrle employant une surface de mesure enveloppante
31、 au-dessus dun plan rflchissant (ISO 3746:2010) Akustik Ermittlung der Schallleistungs- und Schallenergiepegel von Geruschquellen aus Schalldruckmessungen Hllflchenverfahren der Genauigkeitsklasse 3 ber einer reflektierenden Ebene (ISO 3746:2010) This European Standard was approved by CEN on 13 Nove
32、mber 2010. 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 ob
33、tained on application to the CEN-CENELEC 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
34、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, Italy, Latvia, Lithuania, Luxembour
35、g, 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-1000 Brussels 2010 CEN All rights o
36、f exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3746:2010: EContents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 6 3 Terms and definitions .6 4 Test environment.10 5 Instrumentation11 6 Definition, location, installation an
37、d operation of noise source under test 11 7 Reference box and measurement surface 14 8 Determination of sound power levels and sound energy levels 17 9 Measurement uncertainty .22 10 Information to be recorded .25 11 Test report 27 Annex A (normative) Determination of the environmental correction 28
38、 Annex B (normative) Microphone arrays on a hemispherical measurement surface .29 Annex C (normative) Microphone arrays on a parallelepiped measurement surface .34 Annex D (informative) Guidelines on the development of information on measurement uncertainty.42 Bibliography 51 Annex ZA (informative)
39、Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 53 DIN EN ISO 3746:2011-03 EN ISO 3746:2010 (E) 2 Foreword This document (EN ISO 3746:2010) has been prepared by Technical Committee ISO/TC 43 “Acoustics” in collaboration with Technical Committee C
40、EN/TC 211 “Acoustics” the secretariat of which is held by DS. 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 June 2011, and conflicting national standards shall be withdrawn at the latest by June
41、 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 CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 3746:2009. This document has been prepared unde
42、r a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regu
43、lations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
44、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 3746:2010 has been approved by CEN as a EN ISO 3746:2010 without any modification. DIN EN ISO 3746:2011-03 EN ISO 3746:2010 (E) 3 Introductio
45、n This International Standard is one of the series ISO 37412to ISO 37476, which specify methods for determining the sound power levels and sound energy levels of noise sources including machinery, equipment and their sub-assemblies. Guidelines to select one of those methods are provided in ISO 37401
46、. The selection depends on the environment of the available test facility and on the precision of the sound power level or sound energy level values required. It may be necessary to establish a test code for the individual noise source in order to select the appropriate sound measurement surface and
47、 microphone array from among those allowed in each of the ISO 37401to ISO 37476series, and to give requirements for test unit mounting, loading, and operating conditions under which the sound power levels or sound energy levels are to be obtained. The sound power emitted by a given source into the t
48、est environment is calculated from the mean square sound pressure that is measured over a hypothetical measurement surface enclosing the source, and the area of that surface. The sound energy for a single machine event is calculated from this sound power and the time over which it existed. This Inte
49、rnational Standard specifies methods giving results of ISO 12001:1996, accuracy grade 3 (survey grade) when measurements are performed within industrial buildings or outdoors. Ideally, the test source should be mounted on a sound-reflecting plane located in a large open space. For sources normally installed on the floor of machine rooms, corrections are defined to account for undesired reflections from nearby objects, walls, a
