SN EN ISO 5167-4 : 2003
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
MEASUREMENT OF FLUID FLOW BY MEANS OF PRESSURE DIFFERENTIAL DEVICES INSERTED IN CIRCULAR CROSS-SECTION CONDUITS RUNNING FULL - PART 4: VENTURI TUBES
25-08-2022
12-01-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principles of the method of measurement and computation
5 Classical Venturi tubes
5.1 Field of application
5.2 General shape
5.3 Material and manufacture
5.4 Pressure tappings
5.5 Discharge coefficient, C
5.6 Expansibility [expansion] factor, [epsilon]
5.7 Uncertainty of the discharge coefficient, C
5.8 Uncertainty of the expansibility [expansion]
factor [epsilon]
5.9 Pressure loss
6 Installation requirements
6.1 General
6.2 Minimum upstream and downstream straight lengths
for installation between various fittings and the
Venturi tube
6.3 Flow conditioners
6.4 Additional specific installation requirements
for classical Venturi tubes
Annex A (informative) Table of expansibility [expansion]
factor
Annex B (informative) Classical Venturi tubes used
outside the scope of ISO 5167-4
Annex C (informative) Pressure loss in a classical
Venturi tube
Bibliography
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