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1、BRITISH STANDARD BS 6913-5: 1990 Operation and maintenance of earth-moving machinery Part 5: Specification for diagnostic ports Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6913-5:1990 This British Standard, having been prepared under
2、the direction of the Road Engineering Standards Policy Committee, was published under the authority of the Board of BSI and comes into effect on 31 October 1990 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference RDB/21 Draft for comment 87/12992 DC ISBN
3、 0 580 18599 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Road Engineering Standards Policy Committee (RDB/-) to Technical Committee RDB/21, upon which the following bodies were represented: AFRC Institute of Engineering Research As
4、sociated Offices Technical Committee British Coal Corporation Construction Industry Training Board Construction Plant-hire association Federation of Civil Engineering Contractors Federation of Manufacturers of Construction Equipment and Cranes Health and Safety Executive Institution of Civil Enginee
5、rs Institution of Highways and Transportation Ministry of Defence Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6913-5:1990 BSI 09-1999i Contents Page Committees responsi
6、bleInside front cover Forewordii 1Scope1 2Normative references1 3Size and type of port1 4Application guidelines1 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6913-5:1990 ii BSI 09-1999 Foreword
7、 This Part of BS 6913 has been prepared under the direction of the Road Engineering Standards Policy Committee. It is based on ISO 8925:1989 “Earth-moving machinery Diagnostic ports” published by the International Organization for Standardization (ISO). The United Kingdom disapproved of the port siz
8、e specified in ISO 6149:1980 “Fluid power systems and components Metric ports Dimensions and design”. The port size preferred in the United Kingdom is G1/2 thread in accordance with Table 3 of BS 4368-3:1974 “Compression couplings for tubes, Part 3 Specification for light series couplings (metric)”
9、see 3.1. BS 4368-3:1974 is related to ISO 1179, “Pipe connections, threaded to ISO 228-1 for plain end steel and other metal tubes in industrial applications”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for th
10、eir correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard ISO 2860:1983BS 6112:1983 Recommendations for minimum access dimensions for earth-moving machinery (Identical)
11、ISO 4510-1:1987BS 6913 Operation and maintenance of earth-moving machinery Part 1:1989 Guide to common maintenance and adjustment service tools (Identical) ISO 6165:1987BS 6914 Terminology (including definitions of dimensions and symbols) for earth-moving machinery Part 1:1988 Glossary of terms for
12、basic types of earth-moving machinery (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This wi
13、ll be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6913-5:1990 BSI 09-19991 1 Scope This Part of BS 6913 defines the sizes, types and accessibility of diagnostic ports for use
14、 in measuring fluid temperature, pressure and flow, and to obtain fluid samples. It also sets out the requirements for accessibility to the port. It applies to earth-moving machinery as defined in ISO 6165, and gives general guidelines for diagnostic port use. 2 Normative references The following st
15、andards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibili
16、ty of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 2860:1983, Earth-moving machinery Minimum access dimensions. ISO 4510-1:1987, Earth-moving machinery Service tools Part 1: Common mainte
17、nance and adjustment tools. ISO 6165:1987, Earth-moving machinery Basic types Vocabulary. 3 Size and type of port 3.1 Temperature, pressure and sampling ports The port size for measuring temperature and pressure, and to obtain fluid samples shall be a G1/2 thread in accordance with Table 3 of BS 436
18、8-3:1974, into which is inserted a tube reduced at its other end to 8 mm outside diameter when fluid samples are to be extracted. 3.2 Flow measurement ports Flow measurement ports shall be adequate for the flow to be measured. Generally, sizes below 25 mm tube should be as specified in 3.1 and sizes
19、 equal to and above 25 mm should have either threaded or flanged port faces. 4 Application guidelines 4.1 Number and location of diagnostic ports The number and location of diagnostic port checking points shall be determined by the manufacturer and shall be commensurate with the complexity of the sy
20、stem being checked and cost effectiveness. The preferred location of diagnostic ports is in the component; however, they should be readily and safely accessible which might often require them to be located in a connecting line. The ports should be so located in the fluid stream as to minimize any co
21、nditions which could cause inaccuracies in readings: for fluid sampling, the ports should be located in a turbulent flow section of the system. The ports shall be fitted with devices to prevent loss of fluid during connecting and disconnecting of diagnostic measuring instruments. The ports shall als
22、o be located so that the fluid is not contaminated from the surface of the machine when connecting the measuring instruments or during fluid sampling. 4.2 Accessibility 4.2.1 Test ports shall be accessible with common tools, limited to those specified in ISO 4510-1, without the removal of any compon
23、ent other than sealing caps, access panels and/or plates. 4.2.2 A free access area of 75 mm radius around the centre-line of the port and 200 mm from the port surface shall be provided. Access to the port shall be as specified in ISO 2860. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17
24、:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6913-5:1990 BSI 09-1999 Publications referred to See foreword. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:0
25、0 2006, Uncontrolled Copy, (c) BSI BS 6913-5: 1990 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorpo
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33、es 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. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 10:17:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI