New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 5) which is identical with ISO 5167–5 : 2016 ‘Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 5: Cone meters’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Hydrometry Sectional Committee and approval of the Water Resources Division Council.

This Indian Standard is published in five parts. The other parts in the series are

Part 1 General terms and definitions

Part 2 Orifice plates

Part 3 Nozzles and venturi nozzles

Part 4 Venturi tubes

When adopting the text of the international standard, the textual error in key of Fig. 2 was discovered. Revised key for Fig. 2 as given below may be read in place of existing key:

1 Body pipe

2 Cone element

3 Support strut

4 High pressure tapping

5 Low pressure tapping

6 Cone nose

7 Flow

The error has been marked in the text.

The text of 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 especially 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.