New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard which is identical with ISO 6416 : 2017 ‘Hydrometry — Measurement of discharge by ultrasonic transit time (time of flight) method’ issued by the International Organization for Standardization (ISO) is being adopted by the Bureau of Indian Standards on recommendation of the Hydrometry Sectional Committee, and approval of the Water Resources Division Council.

The text of the ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.