ISO INTERNATIONAL STANDARD 14934-3 Secondedition 2012-05-15 Fire tests Calibration and use of heat flux meters - Part 3: Secondary calibration method Essais au feu-Etalonnage et utilisation des appareils demesure du fluxthermique Partie 3:Methode d'étalonnage secondaire Reference number ISO 14934-3:2012(E) LSO @ISO2012 ISO14934-3:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 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-1211Geneva 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 2012 -All rights reserved ISO14934-3:2012(E) Contents Page Foreword .iv Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Transfer calibration. 5.1 General 5.2 Apparatus. 5.3 Test environment. 5 5.4 Set-up procedure.. 5 5.5 Calibration procedure 5.6 Calculationofresults 8 6 Secondarycalibrationinaprimaryfurnace 9 6.1 General 9 6.2 Expressionof results 10 7 Report. 10 AnnexA (informative)Accuracyof calibration. 11 AnnexB (informative)Careofheatfluxmeters 12 Annex C (informative) Guidance notes for carrying out calibration Annex D (informative)Procedurerecommendedfor maintenance of a secondary standard of irradiance at a test laboratory.. 15 Bibliography 16 @ ISO2012-Allrights reserved ili