EN 61262-1-1994 en Medical Electrical Equipment - Characteristics of Electro-Optical X-Ray Image Intensifiers Part 1 Determination of the Entrance Feild Size《医用电气设备 光电X射线影像增强器特性 第1.pdf
《EN 61262-1-1994 en Medical Electrical Equipment - Characteristics of Electro-Optical X-Ray Image Intensifiers Part 1 Determination of the Entrance Feild Size《医用电气设备 光电X射线影像增强器特性 第1.pdf》由会员分享,可在线阅读,更多相关《EN 61262-1-1994 en Medical Electrical Equipment - Characteristics of Electro-Optical X-Ray Image Intensifiers Part 1 Determination of the Entrance Feild Size《医用电气设备 光电X射线影像增强器特性 第1.pdf(18页珍藏版)》请在麦多课文档分享上搜索。
1、 CENELEC ENxb1262-1 74 3404583 0350639 bT7 BRITISH STANDARD Characteristics of electro-optical X-ray image intensifiers for medical electrical equipment Part 1. Determination of the entrance field size The European Standard EN 61262-1 : 1994 has the status of a British Standard BS EN 61262-1 : 1995
2、IEC 1262-1 : 1994 CENELEC EN*b1262-1 94 = 3404583 0350620 319 BS EN 61262-1 : 1995 Amd. No. Committees responsible for this British Standard Date Rxt affected The preparation of this British Standard was entrusted to Echnical Committee HCC/72, Image intensifiers, upon which the following bodies were
3、 represented: Association of X-ray Equipment Manufacturers (BEAMA Ltd.) British Institute of Radiology College of Radiographers Institute of Physical Sciences in Medicine (Ipsm) This British Standard, having been prepared under the direction of the Health and Environment Sector Board (H/-), was publ
4、ished under the authority of the Standards Board and comes into effect on 15 April 1995 O BSI 1995 The following BSI references relate to the work on this standard: Committee reference HCC/72 Draft for comment 94/501341 DC ISBN O 680 23690 4 Amendments issued since publication CENELEC EN*b12b2-1 94
5、3404583 0350623 255 BS EN 61262-1 : 1995 Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 61262-1 4 i CENELEC EN*b32b2-3 94 3404583 O350622 191 = BS EN 61262-1 : 1995 National foreword This British Standard has been prepared by Technical Committee HC
6、C/72 and is the English language version of EN 61262-1 : 1994 Medical electrical equipnent - Characteristics of electro-optical X-ray image intensifiers - Part 1 Determination of the entrance field size, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identi
7、cal with IEC 1262-1 : 1994 published by the International Electrotechnical Commission (IEC). It supersedes BS 6893: 1988, which is withdrawn. Cross-references Publication referred to HD 501 S1 (IEC 788 : 1984) Additional information. The following print types are used in this standard. Requirements,
8、 with which compliance can be tested, and definitions: in roman type. Explanations, advice, general statements, exceptions and references: in smaller type. %st procedures: in italic type. %rms defined in clause 3 of this standard and in annex A: in SMALL CAPITALS. For the purposes of this British St
9、andard, any references to IEC page numbers in the text should be ignored. Compliance with a British Standard does not of itself confer immunity from legal obligations. Corresponding British Standard BS 6641 : 1985 Glossary of medical radiology tm ii CENELEC EN*bL262-L 74 3404583 0350623 028 EUROPEAN
10、 STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61262-1 September 1994 ICs 11.040.50 Descriptors: Medical electrical equipment, image intensifier, X-ray, entrance field Supersedes HD 510 S1 : 1988 English version Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers
11、 Part 1: Determination of the entrance field size (IEC 1262-1 : 1994) Appareils lectromdicaux - Caractristiques des intensificateurs lectro-optiques dimage radiologique Rntgenbildverstrkern Partie 1: Dtermination de la dimension du Medizinische elektrische Gerte - Merkmale von elektronenoptischen Te
12、il 1 : Bestimmung der EingangsfeldgrBe champ dentre (CE1 1262-1 1994) (IEC 1262-1 : 1994) This European Standard was approved by CENELEC on 1994-07-05. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the s
13、tatus 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 Standard exists in three official versions (English, French, Germa
14、n). 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 electrotechnical committees of Austria, Belgium, Denmark,
15、Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisch
16、e Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels O 1994 Copyright reserved to CENELEC members Ref. No. EN 61262-1 : 1994 E CENELEC EN*b12b2-2 94 w 3404583 0250624 Tb4 Page 2 EN 61262-1 : 1994 Foreword The text of document 62B(C0)112, as prepared by Sub-committee 62B: Diagnostic ima
17、ging equipment, of IEC Technical Committee 62: Electrical equipment in medical practice, was submitted to the IEC-CENELEC parallel vote in January 1994. The reference document was approved by CENELEC as EN 61262-1 on 5 July 1994. This European Standard replaces HD 510 S1 : 1988 The following dates w
18、ere fixed: - latest date of publication of an identical national standard (dop) 1995-07-01 - latest date of withdrawal of conflicting national standards (dow) 1995-07-01 For products which have complied with HD 510 S1 : 1988 before 1995-07-01, as shown by the manufacturer or by a certification body,
19、 this previous standard may continue to apply for production until 2000-07-01. Annexes designated normative are part of the body of the standard. Annexes designated informative are given only for information. In this standard, annexes A and B are informative and annex ZA is normative. CENELEC EN*bL2
20、62-L 9Ll 3404563 0150625 7TO Page 3 EN 61262-1 : 1994 CONTENTS FOREWORD 2 INTRODUCTION 4 Clause 1 scope . 5 2 Normative reference . 5 3 Terminology . 5 3.1 Definitions 5 3.2 Degree of requirements and reading instructions 6 4 Requirements 7 4.1 test set-up . 7 4.3 Input radiation . 7 4.4 TESTDEVICE
21、7 4.5 Measurement equipment . 7 4.2 X-RAY IMAGE INTENSIFIER . Opefating conditions . 7 5 Determination Of the USEFUL ENTRANCE FIELD SIZE and NOMINAL ENTRANCE FIELD SIZE 8 5.1 Preparation . 8 5.2 Measurement . 8 5.3 Corrections 8 5.4 Determination . 8 . 6 PfeSentatiOn Of the ENTRANCE FIELD SIZE . 9 7
22、 Statement of compliance 9 Annexes A Terminology . Index of terms 10 B Derivation Of the NOMINAL ENTRANCE FIELD SIZE 11 ZA Other international publications quoted in this standard with the references of the relevant European publications . 12 _ CENELEC ENrb1262-1 94 3404583 0350626 837 9 Page 4 EN 6
23、1262-1 : 1994 INTRODUCTION The ENTRANCE FIELD SIZE Of the ELECTRO-OPTICAL X-RAY IMAGE INTENSIFIER can be specified in Several ways depending on the specific SED. Typically, the ENTRANCE FIELD SIZE is specified as a NOMINAL ENTRANCE FIELD SIZE O as a UCEFUL ENTRANCE FIELD SIZE. The SOURCE TO ENTRANCE
24、 PLANE DISTANCE (SED) for the NOMINAL ENTRANCE FIELD SIZE is infinite, while the USEFUL ENTRANCE FIELD SIZE iS measured at a specific SED, usually one meter. Both the NOMINAL ENTRANCE FIELD SIZE and the USEFUL ENTRANCE FIELD SIZE are considered in this standard. The NOMINAL ENTRANCE FIELD SIZE S cal
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