BS ISO 12764:2017

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and subscripts
5 Principle
6 Flowmeter description
7 Application
8 Installation
9 Operation
10 Performance characteristics
11 Calibration (K-factor determination)
Annex A (informative) - Period jitter and its
        effects on calibration
Annex B (informative) - Special considerations
        for steam
Bibliography

Defines the use of vortex shedding flow meters for liquids, gases, and steam, including a glossary and a set of engineering equations used for specifying performance.

This document describes the use of vortex shedding flow meters for liquids, gases, and steam, including a glossary and a set of engineering equations used for specifying performance, provides technical information to assist the user in selecting, specifying and applying vortex shedding flowmeters, including influence effects, describes typical construction and provides recommendations for inspection, certification, and material traceability, describes availability of diagnostics associated with vortex shedding flowmeters, provides calibration guidance, does not apply to insertion type vortex shedding flowmeters, applies only to closed conduits running full, applies only to fluid flow that is steady or varies only slowly with time, and applies to fluids considered to be single-phase.