ISO INTERNATIONAL STANDARD 5011 Fourth edition 2020-09 Inlet air cleaning equipment for internal combustion engines and compressors Performance testing Separateurs aerauliques placés a I'entree des moteurs a combustion interne etdes compresseurs-Détermination desperformances Reference number IS0 5011:2020(E) ISO @ISO 2020 IS0 5011:2020(E) COPYRIGHTPROTECTEDDOCUMENT @IS02020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 below or Iso's memberbody in the country ofthe requester. ISO copyright office CP 40i : Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22.749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2020 - All rights reserved IS0 5011:2020(E) Contents Page Foreword ..V 1 Scope ..1 2 Normativereferences 3 Terms, definitions and symbols 3.1 Terms and definitions 1 3.2 Symbols 4 Measurement accuracy and standard conditions 4.1 Measurementaccuracy and precision 4 4.2 Standard conditions ..4 5 Testmaterials and testconditions ..4 5.1 Test dust. 4 5.1.1 Grade .4 5.1.2 Preparation 4 5.2 Test oil for oil bath air cleaners .5 5.3 Absolutefiltermaterials .5 5.3.1 Filter media. 5 Validation ofabsolutefilter media efficiency, Ea .5 5.3.2 5.4 Absolutefiltermass .5 5.5 ..6 Temperature and humidity 6 Test procedure for dry-type air cleaners for automotive applications .6 6.1 General .6 6.2 Test equipment 6.3 Restrictionand differential pressuretest .8 6.4 Efficiency test. Purpose .8 6.4.1 6.4.2 Types.. .8 6.4.3 Test procedure-Absolute filter method .9 6.4.4 Test procedure - Direct weighing method .10 6.5 .10 Capacitytest 6.6 Filter element pressure collapse test. .11 6.7 Variable air flow test. ..11 6.8 Presentation of data .12 Test procedure for dry-type air cleaners for industrial applications 7 .12 7.1 General ..12 7.2 Test equipment. ..12 7.3 Restriction and differential pressure test ..13 7.4 Initial efficiencytestprocedureAbsolutefiltermethod .13 7.5 Full-life efficiency and capacity test .14 7.5.1 Air cleanerdust capacity .14 7.5.2 TestprocedureAbsolutefiltermethod .14 7.5.3 TestprocedureDirectweighingmethod .16 7.6 Presentation of data .16 7.7 Scavenged air cleaner performance test ..16 7.7.1 General. .16 7.7.2 Additional equipment. 7.7.3 Restrictionand differentialpressuretest ..17 7.7.4 Full-life efficiency and capacity test. ..17 7.7.5 Presentation of data. .18 7.8 Precleaner performance test .18 7.8.1 Precleaner dust removal ..18 7.8.2 Precleaner efficiency .19 7.8.3 Presentation of data. .19 iii IS0 2020-All rights reserved