Analysis of a Spatial Filtering Design for Capacitive Flow Measurements

D. Hrach, A. Fuchs, and H. Zangl
Institute of Electrical Measurement and Measurement Signal Processing, Graz University of Technology, Graz, Austria

In this paper, a simulation of a capacitive flowmeter utilizing a spatial filtering technique is presented. The flowmeter consists basically of ring shaped electrodes placed sequentially in the flow direction on the outside of a pipe.

The paper introduces an electrode layout and describes the modeling of the electrodes to achieve the required simulation accuracy.

We show the functionality of the sensor by simulation results for two different electrode excitation patterns, and compare the two results in terms of their practical usability.

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