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BS EN ISO 5167-1:2022 – TC

BS EN ISO 5167-1:2022 – TC

$246.62

Tracked changes. Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full – General principles and requirements (ISO 5167-1:2022)

Published By Publication Date Number of Pages
BSI 2022 126
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This document defines terms and symbols and establishes the general principles for methods of measurement and computation of the flow rate of fluid flowing in a conduit by means of pressure differential devices (orifice plates, nozzles, Venturi tubes, cone meters, and wedge meters) when they are inserted into a circular cross-section conduit running full. This document also specifies the general requirements for methods of measurement, installation and determination of the uncertainty of the measurement of flow rate. ISO 5167 (all parts) is applicable only to flow that remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. It is not applicable to the measurement of pulsating flow.

PDF Catalog

PDF Pages PDF Title
1 compares BS EN ISO 5167-1:2022
2 TRACKED CHANGES
Text example 1 — indicates added text (in green)
76 undefined
78 European foreword
Endorsement notice
81 Foreword
82 Introduction
83 1 Scope
2 Normative references
3 Terms and definitions
84 3.1 Pressure measurement
3.2 Primary devices
85 3.3 Flow
88 4 Symbols and subscripts
4.1 Symbols
89 5 Principle of the method of measurement and computation
5.1 Principle of the method of measurement
90 5.2 Method of determination of the required diameter ratio for the selected standard primary device
5.3 Computation of flow rate
5.4 Determination of density, pressure and temperature
5.4.1 General
91 5.4.2 Density
5.4.3 Static pressure
5.4.4 Temperature
92 5.5 Differential pressure flow measurement system
5.5.1 General
93 5.5.2 Primary device
94 5.5.3 Impulse lines and transmitters
5.5.4 Impulse line isolation valves and valve manifolds
5.5.5 Flow computer
5.6 Differential pressure flow measurement system design considerations
5.6.1 Flow rate turndown and stacked transmitters
5.6.2 Meter calibration
95 5.6.3 Permanent pressure loss
96 5.6.4 Diagnostics and meter verification
5.6.5 Overall uncertainty of differential pressure metering system
6 General requirements for the measurements
6.1 Primary device
97 6.2 Nature of the fluid
6.3 Flow conditions
7 Installation requirements
7.1 General
99 7.2 Minimum upstream and downstream straight lengths
7.3 General requirement for flow conditions at the primary device
7.3.1 Requirement
7.3.2 Swirl-free conditions
7.3.3 Good velocity profile conditions
7.4 Flow conditioners
7.4.1 Compliance testing
102 7.4.2 Specific test
8 Uncertainties on the measurement of flow rate
8.1 General
8.2 Definition of uncertainty
103 8.3 Practical computation of the uncertainty
8.3.1 Component uncertainties
8.3.2 Practical working formula
106 Annex A (informative) Iterative computations
108 Annex B (informative) Examples of values of the pipe wall uniform equivalent roughness, ka
109 Annex C (informative) Flow conditioners and flow straighteners
111 Annex D (informative) Differential pressure transmitters, flow range and turndown
118 Annex E (informative) Example of uncertainty calculation for a differential pressure device
122 Annex F (informative) Permanent pressure loss example
124 Bibliography

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BS EN ISO 5167-1:2022 - TC
$246.62