UNI EN ISO 5167-4 : 2004
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
MEASUREMENT OF FLUID FLOW BY MEANS OF PRESSURE DIFFERENTIAL DEVICES INSERTED IN CIRCULAR CROSS-SECTION CONDUITS RUNNING FULL - PART 4: VENTURI TUBES
22-09-2022
01-10-2004
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
Defines the geometry and method of use (installation and operating conditions) of Venturi tubes when they are inserted in a conduit running full to determine the flowrate of the fluid flowing in the conduit.
| Committee |
CT 55
|
| DocumentType |
Standard
|
| PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
| Status |
Withdrawn
|
| Standards | Relationship |
| ONORM EN ISO 5167-4 : 2003 | Identical |
| NBN EN ISO 5167-4 : 2003 | Identical |
| SN EN ISO 5167-4 : 2003 | Identical |
| UNE-EN ISO 5167-4:2003 | Identical |
| EN ISO 5167-4:2003 | Identical |
| NS EN ISO 5167-4 : 1ED 2003 | Identical |
| ISO 5167-4:2003 | Identical |
| NEN EN ISO 5167-4 : 2003 | Identical |
| NF EN ISO 5167-4 : 2003 | Identical |
| DIN EN ISO 5167-4:2004-01 | Identical |
| BS EN ISO 5167-4:2003 | Identical |
| I.S. EN ISO 5167-4:2003 | Identical |
| UNI/TS 11291-2 : 2010 | GAS MEASUREMENT SYSTEMS - HOURLY BASED GAS METERING SYSTEMS - PART 2: CTE PROTOCOL |
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