Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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This document was prepared by Technical Committee ISO/TC 113, Hydrometry, Subcommittee SC 1, Velocity area methods, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 318, Hydrometry, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This fifth edition cancels and replaces the fourth edition (ISO 748:2007), which has been technically revised. The main changes compared with the previous edition are as follows:

— the document has been updated to take account of technological developments;

— Clause 7 has been revised to reduce uncertainties in measurements;

— ISO 9196 regarding measurement under ice conditions has been incorporated.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

BS EN ISO 748:2021

Hydrometry. Measurement of liquid flow in open channels. Velocity area methods using point velocity measurements

Current

Published:

31 Dec 2021