ISO INTERNATIONAL STANDARD 8316 First edition 1987-10-01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION ME>KAYHAPOAHAA OPIAHM3ALMH O CTAHAAPTM3ALMM Measurement of liquid flow in closed conduits Method by collection of the liquid in a volumetric tank Mesure de debit des liquides dans les conduites fermees - Methode par jaugeage d'un reservoir volumetrique Referencenumber ISO 8316: 1987 (E) Not for Resale Foreword national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8316 was prepared by Technical Committee ISO/TC 30, Measurementoffluidflowinclosed conduits. Users should note that all international Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. International Organization for Standardization, 1987 Printed in Switzerland ed without license from IHS Not for Resale ISO 8316 : 1987 (E) Contents Page Scope and field of application References 3 Symbols and definitions . 4 Principie 2 5 Apparatus 5 Procedure 7 : Calculation of flow-rate Calculation of the overall uncertainty in the flow-rate measurement... . Annexes A Corrections to the measurement of filling time 12 B Density of pure water at standard atmospheric pressure of 101,325 kPa. . .... 16 C Example of a volumetric flow-rate installation using the dynamic gauging method . 16 D Example of a volumetric flow-rate installation using the standing start and finish method 17 Student's t-distribution . E 20 ili mitted without license from IHS Not for Resale