NATURAL GAS - CALCULATION OF

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1 IRISH STANDARD I.S. EN ISO :2005 ICS National Standards Authority of Ireland Glasnevin, Dublin 9 Ireland NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 2: Tel: Fax: Sales CALCULATION USING MOLAR-COMPOSITION ANALYSIS (ISO :1997) NSAI 2005 Údarás um Chaighdeáin Náisiúnta na héireann This Irish Standard was published under the authority of the National Standards Authority of Ireland and comes into effect on: July 7, 2005 NO COPYING WITHOUT NSAI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Price Code K

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3 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO May 2005 ICS English version Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO :1997) Gaz naturel - Calcul du facteur de compression - Partie 2: Calcul à partir de l'analyse de la composition molaire (ISO :1997) Erdgas - Berechnung von Realgasfaktoren - Teil 2: Berechnungen basierend auf einer molaren Gasanalyse als Eingangsgröße (ISO :1997) This European Standard was approved by CEN on 17 April CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. B-1050 Brussels Ref. No. EN ISO :2005: E

4 EN ISO :2005 (E) Foreword The text of ISO :1997 has been prepared by Technical Committee ISO/TC 193 "Natural gas of the International Organization for Standardization (ISO) and has been taken over as EN ISO :2005 by CMC. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2005, and conflicting national standards shall be withdrawn at the latest by November According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO :1997 has been approved by CEN as EN ISO :2005 without any modifications. 2

5 INTERNATIONAL STANDARD ISO First edition Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis Gaz naturel Calcul du facteur de compression Partie 2: Calcul par analyse de la composition molaire A Reference number ISO :1997(E)

6 ISO :1997(E) Contents Page 1 Scope Normative references Definitions Method of calculation Principle The AGA8-92DC equation Input variables Ranges of application Uncertainty Suppliers of computer programmes... 6 Annexes A Symbols and units... 7 B Description of the AGA8-92DC method... 9 C Example calculations D Pressure and temperature conversion factors E Performance over wider ranges of application F Subroutines in Fortran for the AGA8-92DC method G Bibliography ISO 1997 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 the publisher. International Organization for Standardization Case postale 56 CH-1211 Genève 20 Switzerland Internet X.400 c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii

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