EN 61672-3-2013 en Electroacoustics - Sound level meters - Part 3 Periodic tests.pdf
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1、BSI Standards PublicationElectroacoustics Sound level metersPart 3: Periodic testsBS EN 61672-3:2013National forewordThis British Standard is the UK implementation of EN 61672-3:2013. It is identical to IEC 61672-3:2013. It supersedes BS EN 61672-3:2006 which is withdrawn.The UK participation in its
2、 preparation was entrusted to TechnicalCommittee EPL/29, Electroacoustics.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct app
3、lication. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 68849 2ICS 17.140.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Commi
4、ttee on 31 January 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61672-3:2013EUROPEAN STANDARD EN 61672-3 NORME EUROPENNE EUROPISCHE NORM December 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrot
5、echnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61672-3:2013 E ICS 17.140.50 Supersedes EN 61672-3:2
6、006 English version Electroacoustics - Sound level meters - Part 3: Periodic tests (IEC 61672-3:2013) Electroacoustique - Sonomtres - Partie 3: Essais priodiques (CEI 61672-3:2013) Elektroakustik - Schallpegelmesser - Teil 3: Periodische Einzelprfung (IEC 61672-3:2013) This European Standard was app
7、roved by CENELEC on 2013-11-04. CENELEC 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 nat
8、ional standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC 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 CENELEC member into its
9、own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedon
10、ia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 61672-3:2013EN 61672-3:2013 - 2 - Foreword The text of documen
11、t 29/814/FDIS, future edition 2 of IEC 61672-3, prepared by IEC/TC 29 “Electroacoustics“ in cooperation with the International Organization of Legal Metrology (OIML), was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61672-3:2013. The following dates are fixed: latest date
12、 by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-08-04 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-11-04 This document supersedes EN 61672-3:2003.
13、 EN 61672-3:2013 includes the following significant technical changes with respect to EN 61672-3:2003. In this second edition, conformance to specifications is demonstrated when a) measured deviations from design goals do not exceed the applicable acceptance limits, and b) the uncertainty of measure
14、ment does not exceed the corresponding maximum-permitted uncertainty, with both uncertainties determined for a coverage probability of 95 %. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held resp
15、onsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61672-3:2013 was approved by CENELEC as a European Standard without any modification. BS EN 61672-3:2013- 3 - EN 61672-3:2013 Annex ZA (normative) Normative references to internationa
16、l publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the r
17、eferenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60942 - Electroacoustics - Sound calibrators EN 60942 - IEC 61094-5 - Measure
18、ment microphones Part 5: Methods for pressure calibration of working standard microphones by comparison EN 61094-5 - IEC 61094-6 - Measurement microphones Part 6: Electrostatic actuators for determination of frequency response EN 61094-6 - IEC 61183 - Electroacoustics - Random-incidence and diffuse-
19、field calibration of sound level meters EN 61183 - IEC 61672-1 - Electroacoustics - Sound level meters Part 1: Specifications EN 61672-1 - IEC 61672-2 - Electroacoustics - Sound level meters Part 2: Pattern evaluation tests EN 61672-2 - IEC 62585 - Electroacoustics - Methods to determine corrections
20、 to obtain the free-field response of a sound level meter EN 62585 - ISO/IEC Guide 98-3 - Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) - - ISO/IEC Guide 99 - International vocabulary of metrology - Basic and general concepts and associated terms
21、 (VIM) - - BS EN 61672-3:2013 2 61672-3 IEC:2013 CONTENTS 1 Scope . 5 2 Normative references 5 3 Submission for testing 6 4 Conformance 6 5 Preliminary inspection . 7 6 Power supply 7 7 Environmental conditions 8 8 General test requirements . 8 9 Sound calibrator . 8 9.1 General . 8 9.2 Information
22、for operation 9 9.3 Information for testing 9 9.4 Calibration of the sound calibrator 9 10 Indication at the calibration check frequency . 9 11 Self-generated noise . 9 11.1 Microphone installed 9 11.2 Microphone replaced by the electrical input-signal device . 10 12 Acoustical signal tests of a fre
23、quency weighting 10 13 Electrical signal tests of frequency weightings . 12 14 Frequency and time weightings at 1 kHz . 13 15 Long-term stability 14 16 Level linearity on the reference level range 14 17 Level linearity including the level range control 14 18 Toneburst response 15 19 C-weighted peak
24、sound level 16 20 Overload indication . 16 21 High-level stability . 17 22 Documentation . 17 BS EN 61672-3:201361672-3 IEC:2013 5 ELECTROACOUSTICS SOUND LEVEL METERS Part 3: Periodic tests 1 Scope This second edition of IEC 61672-3 describes procedures for periodic testing of time-weighting, integr
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