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An electromagnetic current meter-based system for application in unsteady flows

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3 Author(s)
Sorrell, F.Y. ; Dept. of Mech. & Aerosp. Eng., North Carolina State Univ., Raleigh, NC, USA ; Curtin, T.B. ; Feezor, M.D.

A flexible configuration for an array of sensors has been developed for measurements in energetic regions of the ocean where the flow has high spatial and temporal variability. Central to the system is a two-axis electromagnetic current meter that measures the flow through a ducted volume containing a uniform magnetic field and nonprotruding electrodes flush with the duct surfaces. This geometry minimizes the electrode boundary-layer effect on the output, thus improving calibration and reducing fouling and damage potential. An inexpensive amplifier designed for low signal-to-noise ratios is employed to produce very low zero drift during operation

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:15 ,  Issue: 4 )