1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12544-2:2000 The Eu
2、ropean Standard EN 12544-2:2000 has the status of a British Standard ICS 19.100 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Non-destructive testing Measurement and evaluation of the X-ray tube voltage Part 2: Constancy check by the thick filter methodThis British Standard,
3、 having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 June 2000 BSI 06-2000 ISBN 0 580 34178 X BS EN 12544-2:2000 Amendments issued since publication Amd. No. Date Comments National fore
4、word This British Standard is the official English language version of EN 12544-2:2000. The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing, which has the responsibility to: aid enquirers to understand the text; present to the responsible Euro
5、pean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. C
6、ross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electr
7、onic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This doc
8、ument comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.(8523($167$1$5 1250(8523e(11( (8523b,6UDWXEHYROWDJH3DUWUDWXEHYROWDJH3DUW6SHFWURPHWULF PHWKRG3DJH (1
9、%6, ,QWURGXFWLRQ ,QRUGHUWRFRYHUWKHGLIIHUHQWUHTXLUHPHQWVIRUWKHPHDVXUHPHQWRIWKH;UDWXEHYROWDJHWKUHHGLIIHUHQWPHWKRGVDUH GHVFULEHGLQ(1WR(1 7KHYROWDJHGLYLGHUPHWKRG(1HQDEOHVDGLUHFWDQGDEVROXWHPHDVXUHPHQWRIWKHDYHUDJHKLJKYROWDJHRI FRQVWDQWSRWHQWLDO;UDVVWHPVRQWKHVHFRQGDUVLGHRIWKHKLJKYROWDJHJHQHUDWRU 7KHWKLFNIL
10、OWHUPHWKRG(1GHVFULEHVDFRQVWDQFFKHFN7KLVPHWKRGLVUHFRPPHQGHGIRUWKHUHJXODU VWDELOLWFKHFNRIDQ;UDVVWHP 7KHVSHFWURPHWULFPHWKRG(1LVDSURFHGXUHIRUQRQLQYDVLYHPHDVXUHPHQWRIWKH;UDWXEHYROWDJHXVLQJ WKHHQHUJVSHFWUXPRIWKH;UDV7KLVPHWKRGFDQEHDSSOLHGIRUDOO;UDVVWHPVDQGVKDOOEHDSSOLHGZKHQHYHU WKHYROWDJHGLYLGHUPHWKRGLVQRW
11、DSSOLFDEOHHJLQFDVHRIWDQNXQLWVZKHUHLWLVQRWSRVVLEOHWRFRQQHFWWKHYROWDJH GLYLGHUGHYLFH3DJH (1 %6, 6FRSH 7KLVVWDQGDUGVSHFLILHVDFRQVWDQFFKHFNRID;UDVVWHPZKHUHPDLQOWKH;UDYROWDJHLVFKHFNHGDQGDOVRWKH WXEHFXUUHQWDQGWKHFRQVWLWXWLRQRIWKHWDUJHWZKLFKFDQEHFKDQJLQJGXHWRDJHLQJRIWKHWXEH 7KHWKLFNILOWHUPHWKRGLVEDVHGRQDPH
12、DVXUHPHQWRIWKHGRVHUDWHEHKLQGDGHILQHGWKLFNILOWHUXVLQJGHILQHG GLVWDQFHVEHWZHHQWKH;UDWXEHWKHILOWHUDQGWKHPHDVXULQJGHYLFH 7KLVPHWKRGLVYHUVHQVLWLYHWRFKDQJHVRIWKHYROWDJHEXWLWGRHVQRWSURYLGHDQDEVROXWHYDOXHIRUWKH;UDWXEH YROWDJH7KHUHIRUHDUHIHUHQFHYDOXHLVQHHGHGDQGLWLVUHFRPPHQGHGWRILQGWKLVUHIHUHQFHIRUHDPSOHZLWKL
13、QWKH DFFHSWDQFHWHVWRIWKHVVWHP 7KHWKLFNILOWHUPHWKRGLVDUDWKHUVLPSOHWHFKQLTXHDQGPDEHDSSOLHGEWKHRSHUDWRURIDQ;UDVVWHPWRSHUIRUP UHJXODUODFRQVWDQFFKHFNRIWKHVVWHP 7KHPHWKRGFDQDOVREHDSSOLHGIRUFRQVLVWHQFFKHFNVDIWHUFKDQJLQJFRPSRQHQWVZKLFKPDDIIHFWWKH;UDWXEH YROWDJH 7KLVPHWKRGFDQEHDSSOLHGIRUDOOWSHVRI;UDVVWHPVLHI
14、RUFRQVWDQWSRWHQWLDOKDOIZDYHDQGLPSXOVHZDYH JHQHUDWRUVZLWKDWXEHFXUUHQWODUJHUWKDQP$ 3ULQFLSOHDQGHTXLSPHQW 7KHHTXLSPHQWWREHXVHGLQFOXGHVWKHIROORZLQJFRPSRQHQWVVHH)LJXUH WKH;UDVVWHP DVSHFLILHGFROOLPDWRU DVSHFLILHGILOWHU VXLWDEOHGRVHPHWHURUGRVHUDWHPHWHU DILOPIRUWKHSURYHRIJRRGFROOLPDWLRQDQGGRVHPHWHURUGRVHUDW
15、HPHWHUDGMXVWPHQW .H ;UDWXEH FROOLPDWRU WKLFNILOWHU OHDGVKLHOG ILOP GRVHPHWHU )LJXUH6HWXSRIWKHWKLFNILOWHUPHWKRG3DJH (1 %6, ,WLVSRVVLEOHWRDSSODQWSHRIILOWHUDQGGLVWDQFHV7ZRDVSHFWVDUHLPSRUWDQW 7RREWDLQUHSURGXFLEOHYDOXHVWKHFROOLPDWRUWKHILOWHUDQGWKHGRVHUDWHPHWHUVKDOOEHLGHQWLFDODQGWKHIRFXVWR ILOWHUGLVWDQFH
16、DQGWKHIRFXVWRGRVHUDWHPHWHUGLVWDQFH VKDOOEHILHGIRUWKHUHIHUHQFHDQGDOOVXEVHTXHQW PHDVXUHPHQWV 7KHILOWHUPDWHULDODQGWKLFNQHVVVKDOOEHVHOHFWHGDFFRUGLQJWR)LJXUH 7KHUHTXLUHPHQWVFRQFHUQLQJWKHGRVHPHWHURUGRVHUDWHPHWHUDUH 7KHORQJWHUPVWDELOLWVKDOOEHWLPHVEHWWHUWKDQWKHWROHUDQFHRIWKHPHDVXUHGYDOXHV$UHJXODUVWDELOLWFKH
17、FN RIWKHGRVHUDWHPHWHUXVLQJDUDGLRDFWLYHVRXUFHLVQHFHVVDU 7KHGHYLFHVKDOOKDYHDGHTXDWHPHDVXULQJUDQJHV 7KHHSRVXUHWLPHVKDOOEHVHOHFWHGWRREWDLQYDOXHVEHWZHHQDQGRIWKHVFDOH7KUHHRUPRUH PHDVXUHPHQWVVKDOOEHWDNHQDQGWKHUHVXOWVVKDOOEHDYHUDJHG 7KHGLDPHWHURIWKHVHOHFWHGFROOLPDWRUVKDOOEHDVVPDOODVSRVVLEOH7KHDUHDRIKRPRJHQH
18、RXVUDGLDWLRQLQWHQVLWDW WKHGRVHPHWHURUGRVHUDWHPHWHUVKDOOEHHTXDORUOHVVWKHQWLPHVRIWKHVLHRIWKHGHWHFWLRQFKDPEHURIWKHGRVH PHWHU7KLVVKDOOEHSURYHQZLWKDILOPHSRVXUHGXHWRWKHUHTXLUHPHQWRIHDFWDGMXVWPHQW7KLVUDGLRJUDSKPDUNHG ZLWKWKHGDWHRIPHDVXUHPHQWPDEHXVHGIRUGRFXPHQWDWLRQ)LJXUHVKRZVDWSLFDOUDGLRJUDSKRIDGRVHPHWHU Z
19、KLFKLVZHOODGMXVWHGFRUUHVSRQGLQJWR)LJXUH 127(7KHUHVXOWVRIWKHPHDVXUHPHQWDUUDQJHPHQWDUHUHOLDEOHLILWSURYLGHVWKHVDPHYDOXHLQKRULRQWDODQG YHUWLFDODGMXVWPHQW 8VLQJWKHWKLFNILOWHUPHWKRGWKHPHDVXUHGYDOXHVZLOOFKDQJHDSSURLPDWHOWRWLPHVIDVWHUOHYHUDJHIDFWRU WKDQWKH;UDYROWDJHFKDQJHV7KDWPHDQVIRUHDPSOHWKDWRIWKH;UDWXEHY
20、ROWDJHFKDQJHFRUUHVSRQGVWR WRRIWKHPHDVXUHGGRVHUDWH )LJXUH0LQLPXPILOWHUWKLFNQHVVYDOXHV3DJH (1 %6, )LJXUH5DGLRJUDSKRIWKHZHOODGMXVWHGGRVHPHWHUFRUUHVSRQGLQJWR)LJXUH 0HDVXUHPHQW ,QRUGHUWRFDUURXWWKHFRQVWDQFFKHFNRIDQ;UDVVWHPRUWKHFRQVLVWHQFFKHFNRIDQ;UDVVWHPWRFRPSDUH GLIIHUHQWFRPSRQHQWVWKHGRVHUDWHLVPHDVXUHGXV
21、LQJDILOWHUDVJLYHQLQ)LJXUHRUWKLFNHU /HYHUDJHIDFWRU )RUWKHILUVWDSSOLFDWLRQRIWKHWKLFNILOWHUPHWKRGWKHOHYHUDJHIDFWRU/ Y VKDOOEHGHWHUPLQHGFRUUHVSRQGLQJWRWKH VHOHFWHGVHWXS7KHGRVHYDOXHVKDOOEHPHDVXUHGDW DQGDW RIWKHWHVWYROWDJH 127(7KHOHYHUDJHIDFWRUVKRXOGEHDGMXVWHGEHWZHHQDQG7KLVLVDFRPSURPLVHZKLFKFRQVLGHUVOLPLW
22、DWLRQVLQ HSRVXUHWLPH$KLJKOHYHUDJHIDFWRULVUHFRPPHQGHGIRUKLJKDFFXUDFRIWKHPHWKRG 7KHOHYHUDJHIDFWRULVFDOFXODWHGEHTXDWLRQ / Y UDVVWHPWSHDQGIDEULFDWLRQQXPEHU F WKH;UDSDUDPHWHUVYROWDJHN9FXUUHQWP$DQGWKHVHOHFWHGIRFXVVLHSUHIHUDEOWKHQRPLPDO YROWDJHDQGWKHPDLPXPFXUUHQW G WSHDQGVLHRIFROOLPDWRU H ILOWHUWSHDQGWKLFN
23、QHVVSUHIHUDEOZLWKLGHQWLILFDWLRQQXPEHU I GRVHUDWHPHWHURUGRVHPHWHUDOVRZLWKLGHQWLILFDWLRQQXPEHU J IRFXVWRILOWHUGLVWDQFH K IRFXVWRGRVHUDWHPHWHUGLVWDQFH L GUDZLQJRIWKHVHWXSLILWGHYLDWHVIURP)LJXUH M WKHPHDVXUHGYDOXHDQGWKHPHDVXUHGOHYHUDJHIDFWRU N WKHGDWHRIWKHPHDVXUHPHQW O WKHGHYLDWLRQIURPWKHUHIHUHQFHYDOXH P
24、 QDPHDQGVLJQDWXUHRIRSHUDWRU3DJH (1 %6, $QQH$ LQIRUPDWLYH (DPSOHIRUDSSOLFDWLRQ 7KHXVDJHRIWKLVVWDQGDUGQHHGVHDFWDGMXVWPHQWDQGVKLHOGLQJ,WLVGHVLJQHGIRUWKHDSSOLFDWLRQRILQHSHQVLYH HTXLSPHQW 6RPHUHIHUHQFHYDOXHVDUHJLYHQIRURULHQWDWLRQRIXVHUVLQ7DEOH$XHWRGHYLDWLRQVLQWKHDGMXVWPHQWDVZHOODV WKHHTXLSPHQWFRQVLGHUDEO
25、HGLIIHUHQFHVWRWKHJLYHQGDWDDUHSRVVLEOH 7KHDSSOLHG;UDWXEHZDVRIWKHFRQVWDQWSRWHQWLDOWSH $QXVXDOSHQWSHGRVHPHWHUZDVXVHGIRUWKHPHDVXUHPHQWVRIWKHGRVHYDOXHV7KHDEVROXWHDFFXUDFRIWKHGRVH PHWHUUHDGRXWLVHSHFWHGWREHQRWEHWWHUWKDQ1HYHUWKHOHVVWKHILQDODFFXUDFDPRXQWVWRDERXWLID OHYHUDJHIDFWRURILVSUHVXSSRVHG 7DEOH$3DUDPHW
26、HUIRUWKLFNILOWHUPHWKRG 7XEH YROWDJH N9 PP PP $03/()RUDFRQVWDQFFKHFNDWN9DQGWKHFRQGLWLRQVGHVFULEHGDERYH7DEOH$WKH YDOXHVKRXOG EHDOZDVREWDLQHGEHWZHHQP6YDQGP6YWRSURYHDGHYLDWLRQZLWKLQWKHWROHUDQFHRI7 BS EN 12544-2:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | |
27、 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for prepar
28、ing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions
29、. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside
30、 front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be a
31、ddressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide
32、 range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 7
33、111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyr
34、ight subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form
35、 or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070.
