1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 11170:2013Hydraulic fluid power Sequence of tests for verifyingperformance characteristics offilter elementsBS ISO 11170:2013 BRITISH STANDARDNational forewordThis British
2、 Standard is the UK implementation of ISO 11170:2013. Itsupersedes BS ISO 11170:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/18/-/6, Contamination control.A list of organizations represented on this committee can beobtained on request to its
3、 secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 70093 4ICS 23.100.60Compliance with a British Standard can
4、not confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2013.Amendments issued since publicationDate Text affectedBS ISO 11170:2013 ISO 2013Hydraulic fluid power Sequence of tests for verifying per
5、formance characteristics of filter elementsTransmissions hydrauliques Ordre des essais pour la vrification des caractristiques de performance des lments filtrantsINTERNATIONAL STANDARDISO11170Third edition2013-02-15Reference numberISO 11170:2013(E)BS ISO 11170:2013ISO 11170:2013(E)ii ISO 2013 All ri
6、ghts reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All 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 pri
7、or 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 officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS
8、 ISO 11170:2013ISO 11170:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Test elements . 15 Test procedure 25.1 General . 25.2 Fabrication integrity test 45.3 Material compatibility test . 45.4 Other tests
9、. 56 Test report . 57 Identification statement (reference to this International Standard) 5BS ISO 11170:2013ISO 11170:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internationa
10、l 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, governmental and non-governmental, in liaison with ISO,
11、also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committ
12、ees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possi
13、bility 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.ISO 11170 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 6, Contamination control.This third ed
14、ition cancels and replaces the second edition (ISO 11170:2003), which has been technically revised.iv ISO 2013 All rights reservedBS ISO 11170:2013ISO 11170:2013(E)IntroductionIn hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within a closed circui
15、t. The liquid is both a lubricant and power-transmitting medium. The presence of solid contaminant particles in the liquid interferes with the ability of the hydraulic fluid to lubricate and causes wear to the components. The extent of contamination in the fluid has a direct bearing on the performan
16、ce and reliability of the system, and needs to be controlled to levels that are considered appropriate for the system concerned. Filters are used to control the contamination level of the fluid by removing solid contaminant particles.Different principles are used for this purpose; one of these uses
17、a filter element enclosed in a filter housing. The filter element is the porous device that performs the actual process of filtration. The complete assembly is designated as a filter.The performance of filter elements is measured by testing, and a series of International Standards has been developed
18、 to determine performance under specified conditions (see Clause 2). To give a greater level of assurance for a filter elements fitness for duty, most if not all of these tests should be used in a verification programme.This International Standard provides an approval or verification protocol that f
19、eatures all of the current International Standards for filter testing. ISO 2013 All rights reserved vBS ISO 11170:2013BS ISO 11170:2013Hydraulic fluid power Sequence of tests for verifying performance characteristics of filter elements1 ScopeThis International Standard defines a sequence of tests fo
20、r verifying filter elements. It can be used to check their hydraulic, mechanical and separation characteristics.This International Standard is not intended to qualify a filter for a particular duty or replicate conditions of service. This can only be done by a specific test protocol developed for th
21、e purpose, including actual conditions of use (e.g. the operating fluid).The procedure in this International Standard is applicable to individual fluids or types of fluids that have similar chemistry.2 Normative referencesThe following referenced documents are indispensable for the application of th
22、is document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2941, Hydraulic fluid power Filter elements Verification of collapse/burst pressure ratingISO 2942, Hydraulic fluid power Fi
23、lter elements Verification of fabrication integrity and determination of the first bubble pointISO 2943, Hydraulic fluid power Filter elements Verification of material compatibility with fluidsISO 3723, Hydraulic fluid power Filter elements Method for end load testISO 3724, Hydraulic fluid power Fil
24、ter elements Determination of resistance to flow fatigue using particulate contaminantISO 3968, Hydraulic fluid power Filters Evaluation of differential pressure versus flow characteristicsISO 4406, Hydraulic fluid power Fluids Method for coding the level of contamination by solid particlesISO 5598,
25、 Fluid power systems and components VocabularyISO 16889, Hydraulic fluid power Filters Multi-pass method for evaluating filtration performance of a filter elementISO 23181, Hydraulic fluid power Filter elements Determination of resistance to flow fatigue using high viscosity fluid3 Terms and definit
26、ionsFor the purposes of this document, the terms and definitions given in ISO 5598 apply.4 Test elementsThe filter elements selected for verification testing shall be representative of normal product stock filter elements of the same model.INTERNATIONAL STANDARD ISO 11170:2013(E) ISO 2013 All rights
27、 reserved 1BS ISO 11170:2013ISO 11170:2013(E)Some tests are destructive or make the filter element unsuitable for further tests. It is therefore essential to have available a sufficient number of filter elements, because at least three elements shall be tested.5 Test procedure5.1 General5.1.1 Comple
28、tion of the procedure specified in this International Standard provides data on the following filter element characteristics:a) fabrication integrity (see ISO 2942);b) material compatibility with fluids (see ISO 2943);c) filtration efficiency (see ISO 16889);d) contaminant retention capacity (see IS
29、O 16889);e) collapse/burst pressure rating (see ISO 2941);f) pressure drop versus flow characteristics (see ISO 3968);g) flow fatigue characteristics (see ISO 3724 or ISO 23181); andh) end load rating (see ISO 3723); if it can be demonstrated that this test is not relevant to the design of the filte
30、r element being tested, then the tests on element no. 2 shall be omitted.5.1.2 Tests shall be run in accordance with the sequence given in Figure 1 (see 5.2.4 for the numbering of the filter elements) and in accordance with the requirements given in Table 1.NOTE The purpose of the sequence of the te
31、sts is to minimize the number of tests and to ensure that the verification is complete.2 ISO 2013 All rights reservedBS ISO 11170:2013ISO 11170:2013(E)ISO 2942Verig976ication of fabrication integrity and determination of the g976irst bubble point (see 5.2) ISO 2943Verig976ication of material compati
32、bility with g976luids andISO 2942 (see 5.3) fabrication integrity test Filter element No. 1(lowest bubble point BP1a)Filter element No. 2(middle bubble point BP2a)Filter element No. 3(highest bubble point BP3a)ISO 16889Multi-pass method for evaluating g976iltration performance of a g976ilter element
33、 (see Table 1)ISO 3723Method for end load test(see Table 1)ISO 3968Evaluation of pressure drop versus g976low characteristics (see Table 1)ISO 2941Verig976ication ofcollapse/burst pressurerating (see Table 1)ISO 3724 or ISO 23181Verig976ication of g976low fatigue characteristics (see Table 1)aSee 5.
34、2.4.Figure 1 Sequence of testing ISO 2013 All rights reserved 3BS ISO 11170:2013ISO 11170:2013(E)Table 1 Test requirements in addition to fabrication integrity and material compatibility testsTest Test procedureAcceptance criteria or data to be reportedFilter element no. 1 (BP1a)Filtration efficienc
35、y Use ISO 16889, excluding initial fabrication integrity test.Particle sizes in m(c) for the values of x(c)as defined in ISO 16889Contaminant retention capacity Use ISO 16889. Value of CR.Collapse/burst pressure rating Use ISO 2941, excluding initial fabri-cation integrity test.No visual evidence of
36、 structural, seal or filter medium failure.No abrupt decrease in the slope of the differential pressure versus contaminant mass added curve.Filter element no. 2 (BP2a)End load test Use ISO 3723, excluding initial fab-rication integrity test and material compatibility test.No visual evidence of struc
37、tural, seal or filter medium failure.No abrupt decrease in the slope of the differential pressure versus contaminant mass added curve.Filter element no. 3 (BP3a)Pressure drop versus flow charac-teristicsUse ISO 3968. p curve as a function of flow rate.Flow fatigue characteristics Use ISO 3724 or ISO
38、 23181, exclud-ing initial fabrication integrity test.No visual evidence of structural, seal or filter medium failure.No abrupt decrease in the slope of the differential pressure versus contaminant mass added curve.aSee 5.2.4.5.2 Fabrication integrity test5.2.1 Verify the fabrication integrity of ea
39、ch of the three filter elements in accordance with ISO 2942 and disqualify from further testing any filter elements that fail.5.2.2 Record the pressure value at the first bubble point for each filter element.5.2.3 Dry the filter elements either in a heating vacuum chamber, or air-dry them in a suita
40、ble, well-ventilated area, preferably in a fume cabinet.WARNING Exercise care when drying filter elements that have been rinsed with solvents that have a low flash point.5.2.4 Identify the three filter elements in ascending order of the first bubble point pressure, identifying the filter element tha
41、t has the lowest bubble point pressure (BP1) as no. 1 and the filter element with the highest bubble point pressure (BP3) as no. 3, with BP1 BP2 BP3.Ensure that the identification mark chosen does not conflict with other markings on the filter element.5.3 Material compatibility testWARNING Refer to
42、local safety requirements.5.3.1 Immerse the filter elements in accordance with the requirements of the hot soak portion of ISO 2943.4 ISO 2013 All rights reservedBS ISO 11170:2013ISO 11170:2013(E)5.3.2 Conduct a visual examination of the filter elements. There shall be no evidence of structural, sea
43、l or filter medium failure. Disqualify any element that has been damaged as a result of the test.5.3.3 Rinse the filter elements three times by submerging the filters for a period of 10 min in a reservoir containing filtered solvent that is compatible with and miscible with both the previous test fl
44、uid and the bubble point test fluid. The contamination code level of the solvent shall be equal to or cleaner than /11/9 in accordance with ISO 4406.Then rinse the filter elements inside and outside by covering the entire filter element surface with a jet of the same solvent filtered through a 0,8 m
45、 membrane disc. Perform this rinsing operation as carefully as possible so as not to damage the filter element. The use of needle-shaped jets should be avoided, as they can damage the filter medium. A fan-shaped jet is recommended.5.3.4 Dry the filter elements in accordance with 5.2.3.WARNING Exerci
46、se care when drying filter elements that have been rinsed with solvents that have a low flash point.5.3.5 Verify the fabrication integrity of each of the three filter elements in accordance with ISO 2942. Disqualify any element that fails the ISO 2942 criteria. Retest other elements, reporting all e
47、lements that fail.5.3.6 Record the pressure value at the first bubble point for each filter element.5.3.7 Dry the filter elements in accordance with 5.2.3.WARNING Exercise care when drying filter elements that have been rinsed with solvents that have a low flash point.5.4 Other testsThe rest of the
48、tests shall be conducted on filter elements nos. 1, 2 and 3 in the order specified in Figure 1 and in accordance with the requirements of Table 1. The order in which the three filter elements are tested is not important (for example, filter element no. 2 may be tested before filter element no. 1), a
49、s long as the tests on each filter element follow the order specified in Figure 1.6 Test reportPrepare a test report in accordance with the reporting requirements of the respective International Standard for each test carried out. The test report shall include all of these specific test reports and the related test values.7 Identification statement (reference to this International Standard)Use the following statement in test reports, catalogues and sales literature when electing to comply
