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AS 3778.6.3:2023 Measurement of water flow in open channels Measuring devices, instruments and equipment - Calibration of rotating element current-meters in straight open tanks (ISO 3455:2021, IDT)
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AS 3778.6.3:2023 identically adopts ISO 3455:2021, which specifies a calibration method for mechanical type, electromagnetic type and acoustic type hydrometric current-meters used for point velocity measurement of flowing water