Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1989-01-19
1992-07-14
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
73 6141, 324672, 324687, 324688, G01R 2726
Patent
active
051306611
ABSTRACT:
A tomographic flow imaging system comprising three or more capacitance electrodes positioned around a pipe through which a flow to be monitored passes. The capacitance between each pair of the electrodes is measured, and an output is derived from the measured capacitances which is representative of the distribution of material within the pipe. A predetermined voltage signal is applied to one electrode at a time, and the electrodes other than said one electrode are connected to sources of equal fixed potential. The capacitance of each pair of electrodes is measured by measuring charge flowing between the said other electrode of the pair and the source of potential to which it is connected.
REFERENCES:
patent: 4074184 (1978-02-01), Dechene et al.
Huang, Green, Stott and Beck, A Proposed Capacitance Flow Imaging System, Proceedings of the 3rd International Conference on Multiphase Flow, May 18-20, 1987.
Plakowski, Beck and Krawaczynski, Flow Imaging for Multi-Component Flow Management, Trans, Inst. MC, vol. 9, No. 9, Apr.-Jun. 1987, pp. 108-112.
Beck, Green, Allammer and Plaskowski, Some Flow Imaging Problems, IMC Conference on control and Instrumentation--The Changing Scene, Nov. 27-28, 1985, pp. 1-5.
Beck Maurice S.
Huang Song-Ming
Plaskowski Andrzej B.
Eisenzopf Reinhard J.
Mueller Robert W.
The University of Manchester Institute of Science and Tech.
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