1、BRITISH STANDARD BS EN 62127-3:2007Ultrasonics Hydrophones Part 3: Properties of hydrophones for ultrasonic fields up to 40 MHzICS 17.140.50nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnull nullnull nulln
2、ullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnullnull+A1:2013National forewordThis British Standard is the UK implementation of EN 62127-3:2007+A1:2013. It is identical to IEC 62127-3:2007, incorporating amendment 1:2013. It supersedes BS EN 62127-3:2007, which i
3、s withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by !“.The UK participation in its preparation was entrust
4、ed to Technical Committee EPL/87, Ultrasonics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a
5、 British Standard cannot confer immunity from legal obligations.BS EN 62127-3:2007+A1:2013This British Standard waspublished under the authorityof the Standards Policy andStrategy Committeeon 30 May 2008 The British StandardsInstitution 2013. Publishedby BSI Standards Limited2013Amendments/corrigend
6、a issued since publicationDate Comments 30 September 2013 Implementation of IEC amendment 1:2013 with CENELEC endorsement A1:2013ISBN 978 0 580 71776 5EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMCENELEC European Committeefor Electrotechnical Standardization Comit Europen de Normalisation Electr
7、otechnique Europisches Komitee fr Elektrotechnische Normung CentralSecretariat: rue deStassart 35, B - 1050 Brussels 2007 CENELEC -All rights of exploitation in any formand by any means reserved worldwide for CENELEC members.Ref. No. EN 62127-3:2007 EICS 17.140.50 English version Ultrasonics - Hydro
8、phones - Part 3: Properties of hydrophones for ultrasonic fields up to40 MHz(IEC 62127-3:2007)Ultrasons - Hydrophones - Partie 3: Proprits des hydrophonespour les champs ultrasonoresjusqu 40 Mhz(CEI 62127-3:2007) Ultraschall - Hydrophone - Teil 3: Eigenschaften von Hydrophonen zur Verwendung in Ultr
9、aschallfeldern bis zu 40 MHz(IEC 62127-3:2007) This European Standard was approved by CENELEC on 2007-09-01. CENELEC members are bound to complywith the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standardthe status of a national standard without any alte
10、ration.Up-to-date lists and bibliographicalreferences conc erning such national standards maybe obtained on application to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English,French, German). A version in any otherlanguage made by transl
11、ation under the responsibility of a CENELEC member into its own language and notifiedto the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finla
12、nd, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,Sweden, Switzerland and the United Kingdom.August 2013EN 62127-3:2007+A1Foreword The text of document 87/354/CDV, future e
13、dition 1 of IEC 62127-3, prepared by IEC TC87, Ultrasonics,was submitted to the IEC-CENELEC parallelUnique Acceptance Procedure and was approved byCENELEC as EN 62127-3 on 2007-09-01.EN 62127-1, EN 62127-2 and EN 62127-3 are being published simu ltaneously. Together these Europ ean Standards cancel
14、and replace EN 61101:1993, EN61102:1993 + A1:1 994, EN61220:1995 andEN 62092:2001.The following dates were fixed: latest date by which the EN has to be implemented at nationallevel by publication of an identicalnational standard or byendorsement (dop) 2008-06-01 latest date by which the national sta
15、ndards conflicting with the EN have to be withdrawn (dow) 2010-09-01 Annex ZA has been added by CENELEC._ Endorsement notice The text of the International Standard IEC 62127-3:2007 was approved byCENELEC as a EuropeanStandard without any modification._ 2 The text of document 87/530/FDIS, future IEC
16、62127-3:2007/A1, prepared by IEC/TC 87 “Ultrasonics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62127-3:2007/A1:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national sta
17、ndard or by endorsement (dop) 2014-04-02 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-07-02 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
18、be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62127-3:2007/A1:2013 was approved by CENELEC as a European Standard without any modification. Foreword to amendment A1BS EN 62127-3:2007+A1:2013 EN 62127-3:2007+A1:2013 (E
19、)CONTENTSINTRODUCTION.41 Scope.52Normative references53Terms, definitions and symbols. 54List of symbols75Hydrophone characteristics.85.1 General.85.2 Basic information.85.3 Sensitivity85.4 Frequency response95.4.1Stated frequency band.95.4.2 Frequency dependence95.5 Directional response1 05.5.1 Gen
20、eral.105.5.2 Symmetry of directional response.1 05.6 Effective radius1 05.7 Dynamic range, linearity and electromagnetic interference.1 15.8 Electric output characteristics1 25.8.1 General.125.8.2 Hydrophone without pre-amplifier.1 25.8.3 Hydrophone assembly1 25.8.4 Output lead configuration.1 35.9
21、Environmental aspects.1 35.9.1 Temperature range1 35.9.2 Water tightness.1 35.9.3 Water properties and incompatible materials1 35.9.4 Exposed material.1 35.10 Guidance manual.1 35.11 List of hydrophone characteristics1 3Annex A (informative) Examples of information on hydrophone properties.1 5Biblio
22、graphy2 0Figure A.1 Frequency response of 0,2 mmneedle hydrophone.1 6Figure A.2 Directional response of 0,2 mmneedle hydrophone.1 7Table A.1 Example of basic information for 0,2 mm needle hydrophone assembly.1 5 3 Annex Z A (normative) Normative references to international publications with theircor
23、responding European publications.2 1BS EN 62127-3:2007+A1:2013 EN 62127-3:2007+A1:2013 (E)INTRODUCTION The spatial and temporal distribution of acoustic pressure in an ultrasonic field in a liquid medium is commonly determined using miniature ultrasonic hydrophones . The properties ofthese hydrophon
24、es have been dealt with in a number of IEC standards in various aspects. The purpose of this part of IEC 62127 is to bring together all these specifications and to establish a common standard on the properties of ultrasonic hydrophones . The main hydrophone application in this context is the measure
25、ment of ultrasonic fields emitted bymedical diagnostic equipment in water. Other medical applications are field measurements fortherapy equipment such asthat used in lithotripsy, high-intensity focused ultrasound (HIFU)and physiotherapy. Hydrophones are also used extensively in non-medical applicati
26、ons for both product development and quality control including: mapping of the ultrasound field within ultrasonic cleaning baths; characterization of acoustic fields used in transmission measurement systems(e.g. ultrasonic spectrometers, ultrasonic attenuation meters and velocimeters); characterizat
27、ion of acoustic fields used in reflection measurement systems(e.g. Dopplerflowmeters).While the term“hydrophone“ can be used in a wider sense, it is understood here as referring to miniature piezoelectric hydrophones . It is this instrument type that is used today in variousareas of ultrasonics and,
28、 in particular, to quantitatively characterize the field structure ofmedical diagnostic instruments.With regard to other pressure sensor types, such as those based on fibre optics, some of the requirements of this standard are applicable to these as well but others are not. If in the future these ot
29、her “ hydrophone“ types gain more importance in field measurement practice, their properties will have to be dealt with in a revised version ofthis standard or in a separate one. Underwater hydrophones as covered by IEC 60500 and IEC 60565 are not included in thisstandard, although there is an overl
30、ap in the frequencyranges. Underwater hydrophones are used in natural waters, even in the ocean, and this leads to different technical concepts and requirements.In addition, the main direction of acoustic incidence in underwater applications istypically at right angles to the hydrophone axis , where
31、as it is assumed in this standard that it is in the direction of the hydrophone axis . In the past, ultrasonic hydrophones have been applied almost exclusively as amplitude sensors. At present a change can be seen and it is increasingly considered useful to have additional phase information, which,
32、however, is only possible if the phase characteristics ofthe hydrophone have been determined during calibration. In this standard, therefore, requirements are specified for the amplitude aspect of the hydrophone sensitivity, and recommendations are provided for the phase aspect, as an option to be c
33、onsidered. 4 BS EN 62127-3:2007+A1:2013 EN 62127-3:2007+A1:2013 (E)ULTRASONICS HYDROPHONES Part 3: Properties of hydrophones for ultrasonic fields up to 40 MHz 1 Scope This part of IEC 62127 specifies relevant hydrophone characteristics.This standard is applicable to: hydrophones employing piezoelec
34、tric sensor elements, designed to measure the pulsed and continuous wave ultrasonic fields generated by ultrasonic equipment; hydrophones used for measurements made in water; hydrophones with or without an associated pre-amplifier.2 Normativereferences The following referenced documents are indispen
35、sable for the application of this document. Fordated references, only the edition cited applies. For undated references, the latestedition ofthe referenced document (including any amendments) applies.IEC 62127-1, Ultrasonics Hydrophones Part1: Measurement and characterization of medical ultrasonic f
36、ields up to 40 MHzIEC 62127-2, Ultrasonics Hydrophones Part 2: Calibration for ultrasonic fields up to 40 MHz3 Terms, definitions and symbols For the purposes of this document, the terms and definitions given in IEC 62127-1, IEC 62127-2 and the following apply.3.1 directional responsedescription, ge
37、nerally presented graphically, of the response of a hydrophone, as a function ofdirection of propagation of the incident plane sound wave, in a specified plane through the reference centre and at a specified frequencyNOTE Definition adopted from IEC 60565:2006.3.2 effective hydrophone radiusa h , a
38、h3, a h6radius of a stiff disc receiver hydrophone that has a predicted directional response function with an angular width equal to the observed angular width NOTE 1 The angular width is determined at a specified level below the peak ofthe directional response function.For the specified levels of 3
39、 dB and 6 dB, the radii are denoted by a h3 and a h6 respectively.NOTE 2 The radius is usually the function of frequency. For representative experimental data, see 1. NOTE 3 The effective hydrophone radius is expressed in metres (m). 5 BS EN 62127-3:2007+A1:2013 EN 62127-3:2007+A1:2013 (E)3.3 electr
40、ic load impedance Z Lcomplex electric input impedance (consisting of a real and an imaginary part) to which the hydrophone or hydrophone assembly output is connected or is to be connected NOTE The electric load impedance is expressed in ohms ( ).3.4 end-of-cablespecification that relates to the end
41、of the integral output cable if the hydrophone orhydrophone assembly is provided with such a cable; if the hydrophone or hydrophoneassembly is not provided with an integral output cable, the specification relates to the output connector firmly connected with the hydrophone or hydrophone assembly, no
42、t to an extra cable 3.5 end-of-cable loaded sensitivityend-of-cable loaded sensitivity of a hydrophone or hydrophone assemblyM Lratio of the instantaneousvoltage at the end of any integral cable or output connector of a hydrophone or hydrophone assembly, when connected to a specified electric loadim
43、pedance , to the instantaneousacoustic pressure in the undisturbed free field of a plane wave in the position of the reference centre of the hydrophone if the hydrophone wereremoved NOTE End-of-cable loaded sensitivity is expressed in volts per pascal (V/Pa).3.6 end-of-cable open-circuit sensitivity
44、end-of-cable open-circuit sensitivity of a hydrophoneM cratio of the instantaneous, open-circuit voltage at the end of any integral cable or output connector of a hydrophone to the instantaneous acoustic pressure in the undisturbed free field of a plane wave in the position of the reference centre o
45、fthe hydrophone if the hydrophone were removedNOTE 1 End-of-cable open-circuit sensitivity is expressed in volts per pascal (V/Pa).NOTE 2 This corresponds to the free field sensitivity as defined in IEC 60565:2006, 3.15.3.7 free fieldsound field in a homogeneous and isotropic medium in which the eff
46、ects of boundaries are negligible NOTE Definition adopted from IEC 60565:2006, 3.13.3.8 hydrophone geometrical radiusgeometrical radius of a hydrophone active element a gradius defined by the dimensions of the active element of a hydrophoneNOTE The hydrophone geometrical radius is expressed in metre
47、s (m).3.9 hydrophonetransducer that produces electric signals in response to waterborne acoustic signals IEV 801-32-26 6 BS EN 62127-3:2007+A1:2013 EN 62127-3:2007+A1:2013 (E)3.10 hydrophone assemblycombination of hydrophone and hydrophone pre-amplifier3.11 hydrophone axisnominal symmetry axis of th
48、e hydrophone active element NOTE Unless stated otherwise (explicitly and quantitatively) by the manufacturer, itisunderstood for the purposesof this standard that this is given by the apparent geometrical symmetry axis of the hydrophone. 3.12 hydrophone pre-amplifieractive electronic device connecte
49、d to, or to be connected to, a particular hydrophone and reducing its output impedance NOTE 1 Ahydrophone pre-amplifier requires a supply voltage (or supply voltages).NOTE 2 The hydrophone pre-amplifier may have a forward voltage transmission factor of less than one, i.e. itneed not necessarily be a voltage amplifier in the strict sense.3.13 reference centre point on or near a hydrophone about which its acoustic receiving sensitivity is defined NOTE 1 Unlessstated otherwise (explicitly and quantitatively) by
