1、BSI Standards PublicationBS EN ISO 15548-2:2013Non-destructive testing Equipment for eddy currentexaminationPart 2: Probe characteristics and verification(ISO 15548-2:2013)BS EN ISO 15548-2:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO15548-2:2013. It
2、 supersedes BS EN ISO 15548-2:2008 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/46, Non-destructive testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to inclu
3、de all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 80922 4ICS 19.100Compliance with a British Standard cannot confer immunity fromlegal obligations.This British S
4、tandard was published under the authority of theStandards Policy and Strategy Committee on 31 December 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15548-2 December 2013 ICS 19.100 Supersedes EN ISO 15548-2:2008English Version Non
5、-destructive testing - Equipment for eddy current examination - Part 2: Probe characteristics and verification (ISO 15548-2:2013) Essais non destructifs - Appareillage pour examen par courants de Foucault - Partie 2: Caractristiques des capteurs et vrifications (ISO 15548-2:2013) Zerstrungsfreie Prf
6、ung - Technische Ausrstung fr die Wirbelstromprfung - Teil 2: Kenngren von Sensoren und deren Verifizierung (ISO 15548-2:2013) This European Standard was approved by CEN on 12 November 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
7、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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three
8、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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodie
9、s of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spa
10、in, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwid
11、e for CEN national Members. Ref. No. EN ISO 15548-2:2013 EBS EN ISO 15548-2:2013EN ISO 15548-2:2013 (E) 3 Foreword This document (EN ISO 15548-2:2013) has been prepared by Technical Committee ISO/TC 135 “Non-destructive testing” in collaboration with Technical Committee CEN/TC 138 “Non-destructive t
12、esting” the secretariat of which is held by AFNOR. 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 2014, and conflicting national standards shall be withdrawn at the latest by June 2014. Atte
13、ntion 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 15548-2:2008. According to the CEN-CENELEC Internal Regula
14、tions, 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
15、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 15548-2:2013 has been approved by CEN as EN ISO 15548-2:2013 without any modification. BS EN ISO
16、 15548-2:2013ISO 15548-2:2013(E) ISO 2013 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Characteristics of probe and interconnecting elements . 14.1 General characteristics . 14.2 Electrical characteristics 34.3 Functional characterist
17、ics . 35 Verification . 45.1 General . 45.2 Levels of verification 45.3 Verification procedure 55.4 Corrective actions . 56 Measurement of electrical and functional characteristics of a probe 56.1 Electrical characteristics 56.2 Functional characteristics . 66.3 Normalised impedance plane diagram .
18、247 Influence of interconnecting elements .24Annex A (informative) Reference block A6 .25Bibliography .27BS EN ISO 15548-2:2013ISO 15548-2:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of p
19、reparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental,
20、in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/I
21、EC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention is drawn to the possibility that s
22、ome of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent decla
23、rations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 135, Non-destructive Testing, Subcommittee SC 4, Eddy current methods.This second e
24、dition cancels and replaces the first edition (ISO 15548-2:2008), of which it constitutes a minor revision.ISO 15548 consists of the following parts, under the general title Non-destructive testing Equipment for eddy current examination: Part 1: Instrument characteristics and verification Part 2: Pr
25、obe characteristics and verification Part 3: System characteristics and verificationiv ISO 2013 All rights reservedBS EN ISO 15548-2:2013INTERNATIONAL STANDARD ISO 15548-2:2013(E)Non-destructive testing Equipment for eddy current examination Part 2: Probe characteristics and verification1 ScopeThis
26、part of ISO 15548 identifies the functional characteristics of a probe and its interconnecting elements and provides methods for their measurement and verification.The evaluation of these characteristics permits a well-defined description and comparability of eddy current equipment.By careful choice
27、 of the characteristics, a consistent and effective eddy current examination system can be designed for a specific application.Where accessories are used, these should be characterised using the principles of this part of ISO 15548.This part of ISO 15548 does not give the extent of verification nor
28、acceptance criteria for the characteristics. These are given in the application documents.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition
29、of the referenced document (including any amendments) applies.ISO 12718, Non-destructive testing Eddy current testing Vocabulary3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12718 apply.4 Characteristics of probe and interconnecting elements4.1 Gene
30、ral characteristics4.1.1 ApplicationProbes and interconnecting elements are selected to satisfy the requirements of the intended application.The design is influenced by the instrument with which they are used.4.1.2 Probe typesThe probe is described by the following: type of material to be examined,
31、i.e. ferromagnetic or non-ferromagnetic, with high or low conductivity; ISO 2013 All rights reserved 1BS EN ISO 15548-2:2013ISO 15548-2:2013(E) function, e.g. separate or combined transmit/receive probe; family, e.g. coaxial probe, surface probe; measurement mode, e.g. absolute, differential; purpos
32、e of the examination, e.g. detection of discontinuities, sorting or thickness measurement, etc.; specific features, e.g. focused, shielded, etc.4.1.3 Interconnecting elementsThey may include the following: cables and/or extensions; connectors; slip rings; rotating heads; transformers; active devices
33、, e.g. multiplexer, amplifier, etc.4.1.4 Physical characteristicsThe following shall be stated among others: external size and shape; weight; information about mechanical mounting; model number and serial number; material of manufacture of probe housing; composition and thickness of facing material;
34、 presence and purpose of core or shield; type of interconnecting elements (see 4.1.3); orientation mark (direction for maximum sensitivity, see 6.2.3.3); position mark (electrical centre, see 6.2.3.4).4.1.5 SafetyThe probe and its interconnecting elements shall meet the applicable safety regulations
35、 regarding electrical hazard, surface temperature, or explosion.Normal use of the probe should not create a hazard.4.1.6 Environmental conditionsThe temperature and humidity for normal use, storage and transport should be specified for the probe and its interconnecting elements.2 ISO 2013 All rights
36、 reservedBS EN ISO 15548-2:2013ISO 15548-2:2013(E)The tolerance of the probe and its interconnecting elements to the effects of interference noise and electromagnetic radiation shall conform to electromagnetic compatibility (EMC) regulations.Materials used in the manufacture of the probe should be r
37、esistant to contaminants.4.2 Electrical characteristicsThe external electrical connections to the probe shall be clearly identified or declared in writing.The electrical characteristics of a probe connected to a specified length and type of cable are as follows: recommended range of excitation curre
38、nt and voltage for safe operation; recommended range of excitation frequencies; impedance of the excitation element in air; resonant frequency of the excitation element in air; impedance of the receiving element(s) in air.The electrical characteristics of an extension cable shall also be clearly ide
39、ntified.4.3 Functional characteristicsThe functional characteristics of a probe shall be determined for a defined system.The measurement of the functional characteristics of a probe requires the use of calibration blocks. The material used for the reference block is determined by the application.The
40、 functional characteristics of a probe are as follows: directionality; response to elementary discontinuities (hole, slot); length and width of coverage; area of coverage; minimum dimensions of discontinuities for constant response; penetration characteristics; geometric effects; normalised impedanc
41、e locus (when the frequency is varied) of the exciting element with minimum probe clearance from a homogeneous block of a specified material.These characteristics cannot be used alone to establish the performance (e.g. resolution, smallest detectable discontinuity, etc.) of the probe in a given test
42、 system, for a given application.When relevant, the influence of interconnecting elements on the functional characteristics of the probe shall be measured. ISO 2013 All rights reserved 3BS EN ISO 15548-2:2013ISO 15548-2:2013(E)5 Verification5.1 GeneralFor a consistent and effective eddy current exam
43、ination, it is necessary to verify that the performance of the component parts of the eddy current test system is maintained within acceptable limits.The physical condition of the reference blocks shall be verified to be within acceptable limits, before being used to verify the system or probes.The
44、measuring equipment used for verification shall be in a known state of calibration.For a better understanding, the verification procedure is described identically in all three parts of ISO 15548.5.2 Levels of verificationThere are three levels of verification. Each level defines the time intervals b
45、etween verification and the complexity of the verification.It is understood that initial type testing has already been carried out by the manufacturer or under his control.a) Level 1: Global functional checkA verification is performed at regular intervals of time on the eddy current test system, usi
46、ng reference blocks to verify that the performance is within specified limits.The verification is usually performed at the examination location.The time interval and the reference blocks are defined in the verification procedure.b) Level 2: Detailed functional check and calibrationA verification on
47、an extended time scale is performed to ensure the stability of selected characteristics of the eddy current instrument, probe, accessories and reference blocks.c) Level 3: CharacterisationA verification is performed on the eddy current instrument, probe accessories and reference blocks to ensure con
48、formity with the characteristics supplied by the manufacturer.The organization requiring the verification shall specify the characteristics to be verified.The main features of verification are shown in Table 1.Table 1 Verification levelsLevel Object Typical time period Instruments Responsible entity
49、1 Global functional checkStability of system performanceFrequently, e.g. hourly, dailyReference blocks User2 Detailed functional check and calibrationStability of selected characteristics of the instrument, probes and accessoriesLess frequently but at least annually and after repairCalibrated measur-ing instruments, reference blocksUser3 CharacterisationAll characteristics of the instrument, probes and acces-soriesOnce (on release) and when required.Calibrated labora-tory measuring instruments and reference
