Optimisation of an Analogue Signal Conditioning Circuit for a Novel Imaging Electromagnetic Flow meter
M. Ali, G. Lucas
Systems Engineering Research Group, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
This paper describes the optimisation of a signal conditioning circuit for use in a novel imaging electromagnetic flow meter. Voltages are induced on the boundary of the fluid flowing through the flow meter by its interaction with an AC magnetic field. The induced voltages are detected by an array of electrodes and measured by a multi- channel system, based on the signal conditioning circuit described in this paper. The original signal conditioning circuit had several drawbacks. It occasionally exceeded its operational dynamic range, had a very long settling time and a steady-state error. These drawbacks were overcome in the optimised design.
Keywords: multi-electrode electromagnetic flow meter; induced voltage;signal conditioning
Copyright © International Society for Industrial Process Tomography, 2013. All rights reserved.