255 6E22690 E06T59h INTERNATIONAL ISO STANDARD 13443 First edition 1996-12-15 Natural gas Standard reference conditions Gaz naturel-Conditions dereférence standard This material is reproduced from Iso documents under International Organization for Standardization (IsO) .Copyright License number IHS/icC/199s. Not for resale. No part of these IsO documents may be reproduced inanyform,electronicretrieval system orotherwise,except as allowed in the copyright iaw of the country of use, or with the prior written consent of Iso (Case postale 56, 1211 Geneva 20, Switzerland, Fax +41 22 734 10 79), IHS or the iSo Licensor's members. ISo Reference number ISO 13443:1996(E) Copyright International Organization for Standardization Noreproduction or networking permited without licensefrom IHS Not for Resale 4851903 0692240 274 ISO 13443:1996(E) Contents Page Introduction.. iv 1 2 Normative reference.. 1 3 Standard reference conditions. 1 Annexes A Factors for conversion between reference conditions 3 B Equations for conversion between reference conditions .. 5 c Symbols 7 D Examplecalculations.. 8 E National usage of reference conditions 10 F Bibliography .. 11 @ISO1996 reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization CasePostale56.CH-1211Geneve20.Switzerland Printed in Switzerland nt International Organization for Standardization Provided by IHS under license with ISC Not for Resale 00T Th22690 E06T5h CISO ISO 13443:1996(E) Foreword ISO (the International Organization for Standardization) is a worldwide preparing International Standards is normally carried out through Iso which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard sO 13443 was prepared by Technical Committee ISO/TC 193, Natural gas. Annexes A and C form an integral part of this International Standard Annexes B, D, E and F are for information only. ii Copyright Intemational Organization for Standardization