Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and subscripts
4.1 Symbols
4.2 Subscripts
5 Principle of the method of measurement and computation
5.1 Principle of the method of measurement
5.2 Method of determination of the diameter ratio of the
selected standard primary device
5.3 Computation of flowrate
5.4 Determination of density, pressure and temperature
6 General requirements for the measurements
6.1 Primary device
6.2 Nature of the fluid
6.3 Flow conditions
7 Installation requirements
7.1 General
7.2 Minimum upstream and downstream straight lengths
7.3 General requirements for flow conditions at the primary
device
7.4 Flow conditioners (see also Annex C)
8 Uncertainties on the measurement of flow-rate
8.1 Definition of uncertainty
8.2 Practical computation of the uncertainty
Annex A (informative) Iterative computations
Annex B (informative) Examples of values of the pipe wall
uniform equivalent roughness, k
Annex C (informative) Flow conditioners and flow straighteners
Bibliography