Abstract
The acoustic Doppler flowmeters give a global data supposed to be representative of the velocity of the flow. In order to better understand the relation between this data and the velocity, and to obtain precise flow rate measurements, it is necessary to know precisely the working characteristics of the sensors: measurements volume, balance of the acoustic echoes coming from various parts of this volume. A testing procedure has been developped to measure those parameters in a laboratory. The main goal of the interpretation of those results is to lead to a global optimisation of the setup sensor + measuring area + positionning of the sensor in the measurement area.
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