BS-EN-61094-5-2002 IEC-61094-5-2001.pdf
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1、BRITISH STANDARD BS EN 61094-5:2002 IEC 61094-5:2001 Measurement microphones Part 5: Methods for pressure calibration of working standard microphones by comparison The European Standard EN 61094-5:2001 has the status of a British Standard ICS 17.140.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PER
2、MITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:14:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61094-5:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the
3、authority of the Standards Policy and Strategy Committee on 5 March 2002 BSI 5 March 2002 ISBN 0 580 39046 2 National foreword This British Standard is the official English language version of EN 61094-5:2001. It is identical with IEC 61094-1:2001. The UK participation in its preparation was entrust
4、ed to Technical Committee EPL/29, Electroacoustics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27 has be
5、en renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement these international or European publications may be found in the BSI Standa
6、rds Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible fo
7、r their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests infor
8、med; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19 and a back cover. The BSI copyright date displayed in this document indicates when the document
9、was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:14:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 61094-5 NORME EUROPENNE EUROPISCHE NORMDecember 2001 CENELEC European Committee for Electrotechnic
10、al Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 610
11、94-5:2001 E ICS 17.140.50 English version Measurement microphones Part 5: Methods for pressure calibration of working standard microphones by comparison (IEC 61094-5:2001) Microphones de mesure Partie 5: Mthodes pour ltalonnage en pression par comparaison des microphones talons de travail (CEI 61094
12、-5:2001) Messmikrofone Teil 5: Verfahren zur Druckkammer- Kalibrierung von Gebrauchs- Normalmikrofonen nach der Vergleichsmethode (IEC 61094-5:2001) This European Standard was approved by CENELEC on 2001-12-04. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipu
13、late 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 CENELEC member. This European Standar
14、d 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 own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national
15、 electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:14:58 GMT+0
16、0:00 2006, Uncontrolled Copy, (c) BSI EN 61094-5:2001- 2 - Foreword The text of document 29/495/FDIS, future edition 1 of IEC 61094-5, prepared by IEC TC 29, Electroacoustics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61094-5 on 2001-12-04. The following dates
17、were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2002-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 2004-12-01 Annexes designated “normative“ a
18、re part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annexes A, B, C and D are informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61094-5:2001 wa
19、s approved by CENELEC as a European Standard without any modification. _ Page 2 EN 610945:2001 BSI 5 March 2002 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:14:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 61094-5 ? IEC:2001 3 CONTENTS 1Scope 4 2Normative references. 4 3Terms and defini
20、tions. 4 4Reference environmental conditions. 5 5Principles of pressure calibration by comparison 5 5.1Principles 5 5.2Measuring the output voltages of the microphones 6 6Factors influencing the pressure sensitivity. 6 6.1General 6 6.2Microphone pressure equalizing leakage . 6 6.3Polarising voltage
21、. 7 6.4Ground shield reference configuration. 7 6.5Pressure distribution over the diaphragms. 7 6.6Dependence on environmental conditions 8 6.7Validation 8 7Calibration uncertainty components 8 7.1General 8 7.2Sensitivity of the reference microphone. 8 7.3Measurements of microphone output. 8 7.4Diff
22、erences between the sound pressure at the test microphone and that at the reference microphone . 9 7.5Uncertainty on pressure sensitivity level 9 Annex A (informative) Examples of couplers and jigs for simultaneous excitation 10 Annex B (informative) Examples of couplers for sequential excitation13
23、Annex C (informative) Determining the open-circuit sensitivity of a measurement microphone without using the insert-voltage method 15 Annex D (informative) Typical uncertainty analysis16 Annex ZA (normative) Normative references to international publications with their corresponding European publica
24、tions 19 Bibliography 18 Figure A.1 A coupler for use with WS2 microphones .10 Figure A.2 A jig fitted with an LS2 and WS2 microphone .11 Figure A.3 Example arrangement of LS2 and WS2 microphones in a jig11 Figure A.4 Example arrangement of LS2 and WS3 microphones in a jig11 Figure B.1 A coupler for
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