ISO INTERNATIONAL STANDARD 16900-9 First edition 2015-10-01 Respiratory protective devices - Methods of test and test equipment - Part 9: Determination of carbon dioxide content of the inhaled gas Appareils de protection respiratoire - Méthodes d'essai et équipement d'essai - Partie 9: Dosage de la teneur en dioxyde de carbone du gaz inhale Reference number IS0 16900-9:2015(E) ISO International Organization for Standardization @ IS0 2015 ndardization 5956617 ed without license from IHS IS0 16900-9:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland 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. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internationai ibr DrganizationforStandardization Not for Resale, 2015/11/30 07:15:35 networking permited withoutlicense from IHS IS0 16900-9:2015(E) Contents Page Foreword ..V Introduction. ..vii 1 Scope. 2 Normative references 3 Terms and definitions 4 Prerequisites ..1 5 General test requirements ..1 6 Principle 7 Apparatus. 2 7.1 General .2 7.2 Test method 1 3 7.2.1 Breathing machine 3 7.2.2 Carbon dioxide analyser 3 7.2.3 Carbon dioxide sampling 3 7.2.4 RPD head form/torso... ..4 7.3 Test method 2 4 7.3.1 Breathing machine and ancillary equipment ..4 7.3.2 RPD carbon dioxide analyser. .6 7.3.3 RPD head form/torso.. ..6 7.3.4 Test gas. .6 7.3.5 Exhalation and inhalation reservoirs. .6 7.4 Test method 3. ..6 7.4.1 Breathing machine .6 7.4.2 .7 Carbon dioxideanalyser 7.4.3 RPD Head form/torso. .7 7.4.4 Carbon dioxide and volume signal synchronisation 7.4.5 Data acquisition. .7 Test procedures .8 8 8.1 General. ..8 8.1.1 Test sequences. .8 8.1.2 Testing RPD with respiratory interface type L .8 8.2 Test method 1 - Method for measurement of carbon dioxide in inhalation gas. ..8 8.2.1 Calculation of breathing machine settings ..8 8.2.2 Operation of breathing machine 8.2.3 Auxiliary fan.. .9 8.2.4 Exhaled carbon dioxide concentration .9 8.2.5 RPD carbon dioxide level. 9 8.2.6 Fitting the RPD. 8.2.7 Adjusting baseline carbon dioxide concentration when testing supplied breathable gas RPD. ..9 8.2.8 Calculation of carbon dioxide increase. 9 8.2.9 Completion of test sequences.. 8.3 Test method 2 - Method for measurement of carbon dioxide in inhalation gas ..10 8.3.1 Exhaled Carbon dioxide concentration. ..10 8.3.2 Exhalation reservoir .10 8.3.3 Inhalation reservoir. .10 8.3.4 Operation of breathing machine 8.3.5 Auxiliary fan .10 8.3.6 Inhaled carbon dioxide concentration. ..10 8.3.7 End of each test sequence .10 8.3.8 Fitting the RPD. 10 ntemaional ganzation@25-All rights reserved ii censee=Zhejiang Institute of Standardization 5956617 ed without license from IHS Not for Resale, 2015/11/30 07:15:35