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Sensors 2010, 10(3), 1890-1917; doi:10.3390/s100301890
Review

Electrical Capacitance Volume Tomography: Design and Applications

,
,
*  and
William G. Lowrie Department of Chemical and Biomolecular Engineering, the Ohio State University, 140 West 19th Avenue, Columbus, OH 43210, USA
* Author to whom correspondence should be addressed.
Received: 15 January 2010 / Revised: 10 February 2010 / Accepted: 28 February 2010 / Published: 9 March 2010
(This article belongs to the Special Issue Delft Workshop 2008-2009—Sensors and Imagers: a VLSI Perspective)
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Abstract

This article reports recent advances and progress in the field of electrical capacitance volume tomography (ECVT). ECVT, developed from the two-dimensional electrical capacitance tomography (ECT), is a promising non-intrusive imaging technology that can provide real-time three-dimensional images of the sensing domain. Images are reconstructed from capacitance measurements acquired by electrodes placed on the outside boundary of the testing vessel. In this article, a review of progress on capacitance sensor design and applications to multi-phase flows is presented. The sensor shape, electrode configuration, and the number of electrodes that comprise three key elements of three-dimensional capacitance sensors are illustrated. The article also highlights applications of ECVT sensors on vessels of various sizes from 1 to 60 inches with complex geometries. Case studies are used to show the capability and validity of ECVT. The studies provide qualitative and quantitative real-time three-dimensional information of the measuring domain under study. Advantages of ECVT render it a favorable tool to be utilized for industrial applications and fundamental multi-phase flow research.
Keywords: electrical capacitance volume tomography; ECT; ECVT; capacitance sensor; multi-phase flow; non-intrusive testing; process imaging electrical capacitance volume tomography; ECT; ECVT; capacitance sensor; multi-phase flow; non-intrusive testing; process imaging
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Wang, F.; Marashdeh, Q.; Fan, L.-S.; Warsito, W. Electrical Capacitance Volume Tomography: Design and Applications. Sensors 2010, 10, 1890-1917.

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