ISO-TR-16144-2002.pdf
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1、 Reference number ISO/TR 16144:2002(E) ISO 2002 TECHNICAL REPORT ISO/TR 16144 First edition 2002-09-15 Hydraulic fluid power Calibration of liquid automatic particle counters Procedures used to certify the standard reference material SRM 2806 Transmissions hydrauliques talonnage des compteurs automa
2、tiques de particules en suspension dans les liquides Procdures utilises pour certifier le matriau de rfrence normalis SRM 2806 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 23:
3、55:20 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/TR 16144:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embe
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6、lem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfi
7、lm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All
8、 rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 23:55:20 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/TR 16144:2002(E) ISO 2002
9、All rights reserved iii Contents Page Foreword iv Introduction. v 1 Scope 1 2 Equipment and material 1 2.1 Test powder . 1 2.2 Test fluid. 1 2.3 Sample preparation loop 2 2.4 Membrane preparation equipment 2 2.5 Scanning electron microscope and image analyser . 2 3 Equipment validation 3 3.1 Sample
10、preparation validation. 3 3.2 Microscope calibration validation . 4 3.3 Membrane preparation validation 4 3.4 Membrane and SRM 2806 stability testing . 6 4 Test procedure 6 4.1 Calibration suspension preparation SRM 2806 . 6 4.2 Membrane preparation 7 4.3 Membrane examination and particle counting.
11、7 5 Data processing 11 Bibliography 16 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 23:55:20 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/TR 1
12、6144:2002(E) iv ISO 2002 All rights reserved Foreword ISO (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 through ISO technical committees. Each memb
13、er 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 collaborates closely with the International Ele
14、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adop
15、ted 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. In exceptional circumstances, when a technical committee has collected data of a different kind from that w
16、hich is normally published as an International Standard (“state of the art”, for example), it may decide by a simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely informative in nature and does not have to be reviewed until the data it provi
17、des are considered to be no longer valid or useful. Attention is drawn to the possibility that some of the elements of this Technical Report may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TR 16144 was prepared by Technical Co
18、mmittee ISO/TC 131, Fluid power systems, Subcommittee SC 6, Contamination control. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 23:55:20 MDTNo reproduction or networking permi
19、tted without license from IHS -,-,- ISO/TR 16144:2002(E) ISO 2002 All rights reserved v Introduction Solid particulates are a major contributor to wear in hydraulic systems. The fluid power industry, the aerospace industry and the military sector utilize optical automatic particle counter (APC) tech
20、nologies to assess the level of hydraulic oil contamination by suspended particulate. The amount of contamination is often related to the integrity of the system and the usage of the fluid. APCs are also employed in various oil filter testing operations by the manufacturers and the users. The standa
21、rd method ISO 440211) has been used for nearly 30 years to calibrate optical particle counters in terms of particle size as a function of particle concentration. The calibration material used in ISO 4402:1991 is Air Cleaner Fine Test Dust (ACFTD) produced in the past by a division of General Motors
22、Corporation. This material consists of a polydisperse dust having the largest number of particles, as indicated in ISO 4402:1991, with the size range of 1 m to 80 m diameter (particle concentration increases with decreasing diameter). There is a low concentration of particles reported to extend out
23、to approximately 100 m. Some problems have arisen with the use of ACFTD in such calibration procedures. Firstly, there has been ongoing concern that the particle size distribution is not accurate in the small particle size regime ( 10 m) of the distribution2, 3, 4, 5. Many researchers have noted tha
24、t there are more sub-10 m particles in ACFTD than reported by ISO 4402:1991. Secondly, but not less importantly, the production of ACFTD has been discontinued by the supplier. Thus there is a need to investigate, design and devise a new standard method (Hydraulic fluid power Calibration method for l
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