ISO/TS TECHNICAL SPECIFICATION 19021 First edition 2018-05 Test method for determination of gas concentrations in IS0 5659-2 using Fourier transform infrared spectroscopy Méthode pour determiner les concentrations des gaz émis lors de I'essai ISO 5659-2 par spectroscopie infrarouge a transformée de Fourier Reference number IS0/TS 19021:2018(E) International Organization for Standardization e=Shenzhen Institute of Standards and Technology 9972181 @IS02018 IS0/TS 19021:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 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 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland Internatinir Drganization for Standardization Licensee-Shenzhen istute of Standards andeclSo.&e- All rights reserved rious National Standards Bodies Not for Resale, 2018/8/23 07:15:20 IS0/TS 19021:2018(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle ..2 5 Apparatus for combustion of test specimen and for cone radiator calibration ..2 6 Gas sampling system .2 6.1 General arrangement. .2 6.2 Sampling probe. .3 6.3 Main filter .4 6.4 Sampling line before gas cell. .4 6.5 Secondary filter .4 6.6 FTIR gas cell. .5 6.7 Conditioning of sampling flow and pump capacity .5 6.8 Samplingflowrate .5 6.9 FTIR Spectrometer .5 7 Calibrations. .6 7.1 General calibrations .. 6 7.2 Chamber leakage test ..6 7.3 Gas analyser calibration ..6 8 Conditioning ..6 9 Test environment. .7 10 Pre-test conditions .7 11 Test procedure. 11.1 Principle 7 11.2 Operation before each test. 7 11.3 Operation during a test. .8 11.4 Operation after each test. .9 12 Gas species analysis and correction .9 12.1 General .9 12.2 Calculation of corrected volume fraction ..9 12.3 Calculation of time shift ..10 13 Test report ..10 14 Test precision .11 Annex A (informative) Typicai FTiR caiibration procedure at commissioning or after major changes .12 Annex B (informative) Accuracy (trueness and precision) of the test method ..15 Bibliography ..23 Intenationa oganiaion@sIS2Q8- All rights reserved iii icensee=Shenzhen Institute of Standards and Technology 9972181