1、INTERNATIONALSTANDARDIEC61846First edition1998-04Ultrasonics Pressure pulse lithotripters Characteristics of fieldsUltrasons Lithotripteurs ondes de pression Caractrisation des champsReference numberIEC 61846:1998(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SU
2、PPLIED BY BOOK SUPPLY BUREAU.NumberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.Consolidated publicationsConsolidated versions of some IEC publications including amendments areavailable.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,
3、to thebase publication,the base publication incorporating amendment 1 and the basepublication incorporating amendments 1 and 2.Validity of this publicationThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Inf
4、ormation relating to the date of the reconfirmation of the publication is availablein the IEC catalogue.Information on the subjects under consideration and work in progress undertaken bythe technical committee which has prepared this publication,as well as the list ofpublications issued,is to be fou
5、nd at the following IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable both at the IEC web site*and as a printed periodicalTerminology,graphical and letter symbolsFor general terminology,readers are referred to IEC 600
6、50:InternationalElectrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signs approved by the IEC forgeneral use,readers are referred to publications IEC 60027:Letter symbols to beused in electrical technology,IEC 60417:Graphical symbols for use on equipment.Index,survey and co
7、mpilation of the single sheets and IEC 60617:Graphical symbolsfor diagrams.*See web site address on title page.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC61846First edition1998-04Ultrasonics Pressure pulse
8、lithotripters Characteristics of fieldsUltrasons Lithotripteurs ondes de pression Caractrisation des champs Commission Electrotechnique Internationale International Electrotechnical Commission IEC 1998 Copyright-all rights reserved Droits de reproduction rservsAucune partie de cette publication ne p
9、eut tre reproduite niutilise sous quelque forme que ce soit et par aucunprocd,lectronique ou mcanique,y compris la photo-copie et les microfilms,sans laccord crit de lditeur.No part of this publication may be reproduced or utilized inany form or by any means,electronic or mechanical,including photoc
10、opying and microfilm,without permission inwriting from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chPRICE CODEUFor price,see current catalogueLICENSED TO MECON Limited.-RANCHI/BANGALOR
11、EFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61846 IEC:1998(E)CONTENTSPageFOREWORD.3INTRODUCTION.4Clause1 Scope.52 Normative references.53 Definitions.64 List of symbols.105 Conditions of measurement.106 Test equipment.116.1 Test chamber.116.2 Hydrophone.116.3 Voltage mea
12、surement.127 Measurement procedure.127.1 Spatial measurements.127.2 Temporal measurements.147.3 Acoustic energy measurements.14AnnexesAAcoustic wave lithotripsy.16BTypes of pressure wave transducers.18CField measurement.20DBibliography.25LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT
13、 THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61846 IEC:1998(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_ULTRASONICS PRESSURE PULSE LITHOTRIPTERS CHARACTERISTICS OF FIELDSFOREWORD1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprisingall
14、national electrotechnical committees(IEC National Committees).The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields.Tothis end and in addition to other activities,the IEC publishes International Standards.The
15、ir preparation isentrusted to technical committees;any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work.International,governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation.The IEC collaborates clos
16、ely with the International Organizationfor Standardization(ISO)in accordance with conditions determined by agreement between the twoorganizations.2)The formal decisions or agreements of the IEC on technical matters express,as nearly as possible,aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the
