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ISO 3966:2020

Measurement of fluid flow in closed conduits -- Velocity area method using Pitot static tubes

General information
Valid from 20.07.2020
Directives or regulations
None
Standard history
Status
Date
Type
Name
20.07.2020
Main
10.07.2008
Main
This document specifies a method for the determination in a closed conduit of the volume rate of flow of a regular flow a) of a fluid of substantially constant density or corresponding to a Mach number not exceeding 0,25, b) with substantially uniform stagnation temperature across the measuring cross-section, c) running full in the conduit, and d) under steady flow conditions. In particular, it deals with the technology and maintenance of Pitot static tubes, with the calculation of local velocities from measured differential pressures and with the computation of the flow rate by velocity integration.
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