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ASTM
D5389-93(2019)
Standard Test Method for Open-Channel Flow Measurement by Acoustic Velocity Meter Systems
2019
10
ASTM Vol.11.01 (2023)
This test method covers the measurement of flow rate of water in open channels, streams, and closed conduits with a free water surface. The test method covers the use of acoustic transmissions to measure the average water velocity along a line between one or more opposing sets of transducers—by the time difference or frequency difference techniques. The values stated in SI units are to be regarded as the standard...