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Measurement of clean water flow in closed conduits. Velocity-area method using current-meters in full conduits and under regular flow conditions
This International Standard specifies a method for the determination of the volume flow-rate in a closed conduit by means of the velocity-area method using propeller-type current-meters under the following conditions:
the velocity distribution is regular (see 6.1.2);
the fluid is water which is clean or considered to be clean1);
the conduit is full;
the flow is steady2).
It deals in particular with the technology and calibration of propeller-type current-meters, the measurement of local velocities and the calculation of the flow-rate by velocity integration.
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