1、Hydraulic fluid power Fluids Method for coding the level of contamination by solid particlesBS ISO 4406:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Hydraulic fluid power Fluids Method for coding the level of contamination by solid particlesTransmissi
2、ons hydrauliques Fluides Mthode de codification du niveau de pollution particulaire solideINTERNATIONAL STANDARDISO4406Third edition2017-08Reference numberISO 4406:2017(E)National forewordThis British Standard is the UK implementation of ISO 4406:2017. It supersedes BS ISO 4406:1999, which is withdr
3、awn.The UK participation in its preparation was entrusted to Technical Committee MCE/18/-/6, Contamination control.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract
4、. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 96387 2ICS 75.120; 23.100.60Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the
5、 authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 4406:2017 ISO 2017Hydraulic fluid power Fluids Method for coding the level of contamination by solid particlesTransmissions hydrauliqu
6、es Fluides Mthode de codification du niveau de pollution particulaire solideINTERNATIONAL STANDARDISO4406Third edition2017-08Reference numberISO 4406:2017(E)BS ISO 4406:2017ISO 4406:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserv
7、ed. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
8、at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 4406:2017ISO 4406:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROT
9、ECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prio
10、r written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO 4406:20
11、17(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Code definition . 13.1 General . 13.2 Basis of code 23.3 Allocation of scale numbers . 23.4 Determination of code using automatic particle counter analysis 33.5 Determination of code using microscope sizing 44 Identification statemen
12、t (reference to this document) . 4Annex A (normative) Graphical presentation of the code number 5 ISO 2017 All rights reserved iiiContents PageBS ISO 4406:2017ISO 4406:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
13、member bodies). The work of preparing 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, govern
14、mental and non-governmental, 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 maintenan
15、ce are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. International Standards are drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directiv
16、es).Attention is drawn to the possibility that some 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 Int
17、roduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO spec
18、ific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committ
19、ee ISO/TC 131, Fluid power systems, Subcommittee SC 6, Contamination control.This third edition cancels and replaces the second edition (ISO 4406:1999), which has been technically revised.The main changes compared to the previous edition are as follows: All year references for ISO 11171 have been re
20、moved to ensure that only the most recent version of ISO 11171 is used. This is needed to ensure consistency in the usage and definition of the m(c) particle sizes used in this document. All year references for ISO 4407 and ISO 11500 have been removed to ensure that only the most recent version of t
21、hese standards are used.iv ISO 2017 All rights reservedBS ISO 4406:2017ISO 4406:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out th
22、rough 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, in liaison with ISO, also take part in the work. ISO collab
23、orates 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/IEC Directives, Part 1. In particular the different approval
24、 criteria needed for the different types of ISO documents should be noted. International Standards are drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may
25、 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 declarations received (see www .iso .org/ pat
26、ents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information abou
27、t ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 6, Contamination control.This third
28、edition cancels and replaces the second edition (ISO 4406:1999), which has been technically revised.The main changes compared to the previous edition are as follows: All year references for ISO 11171 have been removed to ensure that only the most recent version of ISO 11171 is used. This is needed t
29、o ensure consistency in the usage and definition of the m(c) particle sizes used in this document. All year references for ISO 4407 and ISO 11500 have been removed to ensure that only the most recent version of these standards are used.iv ISO 2017 All rights reserved ISO 4406:2017(E)IntroductionIn h
30、ydraulic fluid power systems, power is transmitted, and controlled, through a liquid under pressure within an enclosed circuit. Solid particle contaminant is always present in the hydraulic fluid and the amount needs to be determined because the contaminant may cause serious problems. ISO 2017 All r
31、ights reserved vBS ISO 4406:2017Hydraulic fluid power Fluids Method for coding the level of contamination by solid particles1 ScopeThis document specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system.2 Normative referencesT
32、he following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies
33、.ISO 4 407, Hydraulic fluid power Fluid contamination Determination of particulate contamination by the counting method using an optical microscopeISO 11171, Hydraulic fluid power Calibration of automatic particle counters for liquidsISO 11500, Hydraulic fluid power Determination of the particulate
34、contamination level of a liquid sample by automatic particle counting using the light-extinction principle3 Code definition3.1 GeneralThe purpose of this code is to simplify the reporting of particle count data by converting the numbers of particles into broad classes or codes, where an increase in
35、one code is generally a doubling of the contamination level.The original code, in accordance with the first edition of this document, stated the reporting at two sizes 5 m and 15 m. The sizes in this document account for the use of a different calibration standard for optical automatic particle coun
36、ters (APCs). The reported sizes are 4 m(c), 6 m(c) and 14 m(c), the last two of these being equivalent to the 5 m and 15 m particle sizes obtained using the ISO 4402:19911)method of calibrating APCs. Throughout this document the use of m(c) means that particle size measurements are carried out using
37、 an automatic particle counter that has been calibrated in accordance with ISO 11171.Measurement of particles using an optical microscope as specified in ISO 4407 establishes the size of a particle as being equal to its longest dimension, whereas an automatic particle counter derives the size of an
38、equivalent particle from its cross-sectional area, a value different in most cases from that determined using a microscope. The particle sizes to be reported for measurement by microscope 5 m and 15 m are unchanged from those specified in the first edition of this document.CAUTION Particle counts ar
39、e affected by a variety of factors. These factors include procurement of sample, particle counting accuracy and the sample container (where used), and its cleanliness. Proper care should be taken during sample procurement to ensure that the sample obtained is representative of the fluid circulation
40、in the system.1) ISO 4402:1991 has been replaced by ISO 11171.INTERNATIONAL STANDARD ISO 4406:2017(E) ISO 2017 All rights reserved 1BS ISO 4406:2017Hydraulic fluid power Fluids Method for coding the level of contamination by solid particles1 ScopeThis document specifies the code to be used in defini
41、ng the quantity of solid particles in the fluid used in a given hydraulic fluid power system.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cit
42、ed applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4 407, Hydraulic fluid power Fluid contamination Determination of particulate contamination by the counting method using an optical microscopeISO 11171, Hydraulic fluid power Cali
43、bration of automatic particle counters for liquidsISO 11500, Hydraulic fluid power Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle3 Code definition3.1 GeneralThe purpose of this code is to simplify the report
44、ing of particle count data by converting the numbers of particles into broad classes or codes, where an increase in one code is generally a doubling of the contamination level.The original code, in accordance with the first edition of this document, stated the reporting at two sizes 5 m and 15 m. Th
45、e sizes in this document account for the use of a different calibration standard for optical automatic particle counters (APCs). The reported sizes are 4 m(c), 6 m(c) and 14 m(c), the last two of these being equivalent to the 5 m and 15 m particle sizes obtained using the ISO 4402:19911)method of ca
46、librating APCs. Throughout this document the use of m(c) means that particle size measurements are carried out using an automatic particle counter that has been calibrated in accordance with ISO 11171.Measurement of particles using an optical microscope as specified in ISO 4407 establishes the size
47、of a particle as being equal to its longest dimension, whereas an automatic particle counter derives the size of an equivalent particle from its cross-sectional area, a value different in most cases from that determined using a microscope. The particle sizes to be reported for measurement by microsc
48、ope 5 m and 15 m are unchanged from those specified in the first edition of this document.CAUTION Particle counts are affected by a variety of factors. These factors include procurement of sample, particle counting accuracy and the sample container (where used), and its cleanliness. Proper care shou
49、ld be taken during sample procurement to ensure that the sample obtained is representative of the fluid circulation in the system.1) ISO 4402:1991 has been replaced by ISO 11171.INTERNATIONAL STANDARD ISO 4406:2017(E) ISO 2017 All rights reserved 1 ISO 4406:2017(E)3.2 Basis of codeThe code for contamination levels using automatic particle counters comprises three scale numbers that permit the differentiation of the dimension and the distribution o
