IS 14573 : 2014/ISO 1088 : 2007 Hydrometry - Velocity-Area Methods Using Current-Meters - Collection and Processing of Data for Determination of Uncertainties in Flow Measurement

Reaffirmed 2020

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 1088 : 2007 ‘Hydrometry - Velocityarea methods using current-meters - Collection and processing of data for determination of uncertainties in flow measurement’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Hydrometry Sectional Committee and approval of the Water Resources Division Council.

This standard was first published in 1998. This revision is being done to align it with the latest version of ISO 1088 : 2007.

All measurements of physical quantities are subject to uncertainties, which can be due to biases (systematic errors) introduced in the manufacture, calibration, and maintenance of measurement instruments, or to random scatter caused by a lack of sensitivity of the instruments, and to other sources of error. The procedures for estimating the component uncertainties and the uncertainty in discharge in this standard conform to ISO/IEC Guide 98 ‘Guide to the expression of uncertainty in measurement (GUM)’.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain 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.