ISO INTERNATIONAL STANDARD 14085-3 Firstedition 2015-03-01 Aerospace series Hydraulic filter elements Test methods Part 3: Filtration efficiency and retention capacity Sérieaerospatiale-Elementsfiltrantshydrauliques-Méthode d'essais Partie3:Efficacitédefiltrationetcapacitéderétention Referencenumber IS014085-3:2015(E) LSO Intermational Organization for Standardization @IS02015 d without license from IHS IS014085-3:2015(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2015 All 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 prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211 Geneva 20 Tel. +4122 749 0111 Fax +41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland PrganizationforStandardization networking permited without license from IHS NotforResale, 2015/6/206:51:02 IS014085-3:2015(E) Contents Page Foreword ..iv Introduction. 1 Scope. ..1 2 Normative references 3 Terms and definitions ..2 4 Symbols andabbreviated terms ..4 5 Test procedure overview. ..6 6 Test equipment and supplies ..6 7 Instrumentaccuracyandallowabletestconditionvariation ..10 8 Testequipmentvalidation ..10 9 Summaryofinformationrequiredpriortotesting ..14 10 Preliminary test preparation .14 10.1 Test filterassembly.. ..14 10.2 Contaminantinjection system .14 10.3 Steadyflowfiltertest system. .15 10.4 Cyclicflowfiltertestsystem ..17 11 Filter element efficiency test ..17 11.1 Steadyflowtest. .17 11.2 Cyclic flow test. .18 12 Calculation and data reporting .20 12.1 Filtrationratioandretentioncapacity 20 12.2 Calculationofstabilizedparticlecountsforcyclicflowtest. .24 13 Identificationstatement(referencetothispartofIs014085) .25 Annex A (normative) Properties of test fluid to evaluate performance ofhydraulic fluid systemsfilter elements. .30 Annex B (informative) Test system design guide .32 Bibliography .37 iii lout license from IHS