UNI EN ISO 5167-2 : 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Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 2: ORIFICE PLATES
22-09-2022
01-10-2004
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Principles of the method of measurement and computation
5 Orifice plates
5.1 Description
5.2 Pressure tappings
5.3 Coefficients and corresponding uncertainties of
orifice plates
5.4 Pressure loss, delta[omega]
6 Installation requirements
6.1 General
6.2 Minimum upstream and downstream straight lengths
for installation between various fittings and the
orifice plate
6.3 Flow conditioners
6.4 Circularity and cylindricality of the pipe
6.5 Location of orifice plate and carrier rings
6.6 Method of fixing and gaskets
Annex A (informative) Tables of discharge coefficients
and expansibility [expansion] factors
Annex B (informative) Flow conditioners
Bibliography
Defines the geometry and method of use (installation and operating conditions) of orifice plates when they are inserted in a conduit running full to determine the flow-rate 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Withdrawn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 5167-2 : 2003 | Identical |
| ISO 5167-2:2003 | Identical |
| NS EN ISO 5167-2 : 1ED 2003 | Identical |
| NBN EN ISO 5167-2 : 2003 | Identical |
| UNE-EN ISO 5167-2:2003 | Identical |
| NF EN ISO 5167-2 : 2003 | Identical |
| SN EN ISO 5167-2 : 2003 | Identical |
| BS EN ISO 5167-2:2003 | Identical |
| DIN EN ISO 5167-2:2004-01 | Identical |
| EN ISO 5167-2:2003 | Identical |
| NEN EN ISO 5167-2 : 2003 | Identical |
| I.S. EN ISO 5167-2:2003 | Identical |
| UNI 9167 : 2009 | INITIAL PRESSURE AND REDUCTION PLANTS FOR NATURAL GAS - DESIGN, CONSTRUCTION AND TESTING |
| UNI/TS 11291-2 : 2010 | GAS MEASUREMENT SYSTEMS - HOURLY BASED GAS METERING SYSTEMS - PART 2: CTE PROTOCOL |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.