Abstract
This paper presents a full 3D study of a shielded ECT sensor. The spatialresolution and effective sensing field are obtained by means of Finite Element Methodbased simulations and are the compared to a conventional sensor's characteristics. Aneffective improvement was found in the sensitivity in the pipe cross-section, resulting inenhanced quality of the reconstructed image. The sensing field along the axis of the sensoralso presents better behaviour for a shielded sensor.
Highlights
In the recent years, Electrical Capacitance Tomography (ECT) and Electrical Impedance Tomography (EIT) have been widely used to image and control flow processes involving several phases, such as gas-oil, water-oil, sand-air, and so on... [1,2,3].These techniques are used to obtain information about the spatial distribution of a mixture of materials inside a vessel, by measuring the electrical capacitances or resistances between sets of electrodes placed around its periphery and converting them into an image showing the distribution of permittivity or resistivity, respectively, by means of tomography data processing
This paper presents a full 3D study of a shielded ECT sensor
The spatial resolution and effective sensing field are obtained by means of Finite Element Method based simulations and are the compared to a conventional sensor's characteristics
Summary
Electrical Capacitance Tomography (ECT) and Electrical Impedance Tomography (EIT) have been widely used to image and control flow processes involving several phases, such as gas-oil, water-oil, sand-air, and so on... [1,2,3]. This distortion has a direct effect upon the effective sensing field. The sensitivity shape shows strong shifts near the edges of the electrodes in the shielded sensor, but is smoother in the nonshielded sensor
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