07-30133498-DC.pdf
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1、1 Date: 29 August 2007 Origin: National Latest date for receipt of comments: 31 OCTOBER 2007 Project no.: 2005/01221 Responsible committee: IS/NFE/4/1/2 Torque measurement and testing Interested committees: Title: Draft BS 7882 Method for calibration and classification of torque measuring devices Su
2、persession information: If this document is published as a standard, the UK implementation of it will supersede BS7882:1997. If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED O
3、R USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 OCTOBER 2007. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copy
4、ing is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organizat
5、ion by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, International and foreign standards are also available from BSI Customer Services. British Standards on CD or Online are available from British S
6、tandards Publishing Sales Limited. Tel: 01344 404409 or email bsonlinetechindex.co.uk. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement Interna
7、tional or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi- . Direct tel: 020 8996 7261 Responsible Committee Secretary: Mr A Price (BSI) E-mail: alex.pricebsi- Draft for Public Comment Head Office 389 Chiswick Hi
8、gh Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 www.bsi- Form 36 DPC: 07/30133498 DC Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:27:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 Introduction Your comments on this draft are we
9、lcome and will assist in the preparation of the consequent British Standard. If no comments are received to the contrary, this draft may be implemented unchanged as a British Standard. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate atten
10、tion by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 2003 of Microsoft Wor
11、d for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how
12、 to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Publications/Current-work/DPCs/ Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) M B Clause No./ Subclause No./ Annex (e.g. 3.
13、1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to
14、 which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corp
15、oration. Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:27:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS 7882:2007 3 Method for Calibration and classification of torque measuring devices Licensed Copy: London South Bank University, London South Bank Unive
16、rsity, Fri Oct 05 02:27:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS 7882:2007 4 Contents Foreword 5 1 Scope 6 2 Terms, definitions, abbreviations and symbols 6 3 Preparation for calibration 9 4 Calibration procedure 13 5 Calculation of results 14 6 Classification of torque measuring devices 17
17、7 Calibration certificate 18 Annexes Annex A (informative) 20 Orientation diagrams 20 Annex B (informative) 22 Method example of determining uncertainty of the calibration results of the torque measuring device 22 List of figures Figure A.1 Example of preloading and calibration sequences for a torqu
18、e transducer with round shaft drives, six increasing and decreasing torques, classes 0.05 to 5.0 20 Figure A.2 Example of preloading and calibration sequences for a torque transducer with round shaft drives, six increasing torques only, classes 0.05 to 5.0 20 Figure A.3 Example of preloading and cal
19、ibration sequences for a torque transducer with square drives, six increasing and decreasing torques, classes 0.05 to 5.0 20 Figure A.4 Example of preloading and calibration sequences for a torque transducer with square drives, six increasing torques only, classes 0.05 to 5.0 21 Figure A.5 Example o
20、f preloading and calibration sequences for a torque transducer, six increasing and decreasing torques, classes 0.2 to 5.0. 21 Figure A.6 Example of preloading and calibration sequences for a torque transducer, six increasing torques only, classes 0.2 to 5.0 21 List of tables Table 1 Uncertainty of c
21、alibration torques 9 Table 2 Criteria for classification of torque measuring devices 18 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:27:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS 7882:2007 5 Foreword This British Standard is published by BSI and came
22、 into effect on XX Month 200X.It was prepared by Technical Committee ISE/NFE/4, Torque measurement and testing. A list of organizations represented on this committee can be obtained on request to its secretary. Supersession BS 7882:2007 supersedes BS 7861-1:1996, which is withdrawn. Presentational c
23、onventions The provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”. Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a
24、 normative element. Contractual and legal considerations This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy: London
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