ISO INTERNATIONAL STANDARD 29473 First edition 2010-12-01 Fire tests Uncertainty of measurements in fire tests Essais au feu- Incertitude de mesures dans les essais au feu Reference number ISO 29473:2010(E) @ ISO 2010 yIHSunder Not for Resale ISO 29473:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT ? ISO2010 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 microfilm, without permission in writing 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. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @IsO 2010-All rights reserved ted without license from IHS Not for Resale ISO29473:2010(E) Contents Page Foreword Introductior 1 Scope 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions 3.2 Symbols.. 4 Principles 5 Evaluatingstandard uncertainty.. 5.1 5.2 Type A evaluation of standard uncertainty.. 5.3 Type B evaluation of standard uncertainty... 5.4 Accounting for multiple sources of error . 6 Determining combined standard uncertainty.. 7 Determining expanded uncertainty .. .8 8 Reporting uncertainty.... .9 9 Summary of procedure for evaluating and expressing uncertainty .. 10 Annex A (informative) Basic concepts of measurement uncertainty.. Annex B (informative) Uncertainty of fire test results 13 Annex C (informative) Example of estimating the uncertainty in heat release measurements in the cone calorimeter.... 14 Bibliography... Copyright International Organization forStandardizallon'ghts reserved ii from IHS Not for Resa