ISO INTERNATIONAL STANDARD 9196 First edition 1992-03-01 Liquid flow measurement in open channels -- Flow measurements under ice conditions Mesure de debit des liquides dans les canaux decouverts --- Mesurage de debit dans des conditions de glace Reference number ISO 9196:1992(E) king permitted without license from IHS Not for Resale ISO 9196:1992(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through Iso technicat committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations. govern- work. isO collaborates closely with the lnternational 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 Inter- bodies casting a vote. International Standard Iso 9196 was prepared by Technical Committee ISO/TC 113, Measurement of liquid flow in open channels, Sub- Committee SC 7,Special problems and methods of measurements C ISO 1992 Ail rights reserved. No part of this publicatlon may be reproduced or utllized in any form or by, any means, electronic or mechanical, including photocopying and mlcrofilm, without permisslon in writing from the publisher. International Organizationfor Standardizaton Case Postale 56: CH-1211 Geneve 20 : Switzerland Printed in Switzerland 11 I without license from IHS Not for Resale ISO 9196:1992(E) INTERNATIONAL STANdARD Liquid fow measurement in open channels -- Flow measurements under ice conditions Is0 1438-1:1980, Water flow measurement in open Scope T channels using weirs and Venturi flumes -- Part 1: Thin-plate weirs. This International Standard deals with water dis- charge measurements in rivers and channels under Is0 3846:1989, Liquid flow measurement in open ice conditions and provides information additional to channels by weirs and flumes - Rectangularbroad. that published in previous international Standards. crested weirs. This Internationa! Standard does not specify meas- Iso 3847:1977, Liquid flow measurement in open uring instruments and equipment, which are dealt channels by weirs and flumes -End-depthmethod with in other International Standards for estimation of flow in rectangular channels with a free overfall. 1so 4359:1983, Liquid flow measurement in open channels -- Rectangular, trapezoidal and U-shaped 2 Normative references flumes. The following standards contain provisions which. isO 4360:1984, Liquid flow measurement in open through reference in this text, constitute provisions channels by weirs and flumes --- Triangular profile of this International Standard. At the time of publi- weirs. cation, the editions indicated were valid. All stan- subject to revision, and parties to dards are isO 4377:1990, Liquid flow measurement in open agreements based on this International Standard channels -- Flat-v weirs. are encouraged to investigate the possibility of ap plying the most recent editions of the standards in- IsO 5168:1978, Measurement of fluid flow --- Esti- dicated below. Members of IEC and IsO maintain mation of uncertainty of a flow-rate measurement. registers of currently valid International Standards. WMO (World Meteorological Qrganisation) Technical Iso 555-1:1973, Liquid flow measurement in open Note No. 117 (WMo No. 280), Use of weirs and flumes channels Dilution methods for measurement of in stream gauging. flow Part 1: Constant-rate injection steady method. Definitions 1so 555-2:1987, Liquid flow measurement in open Dilution methods for the measurement channels - For the purposes of this International Standard, the of steady flow -- Part 2: Integration method. definitions given in is0 772 apply. Iso 748:1979, Liquid flow measurement