Influence of Shielding Arrangement on ECT Sensors

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.

Keywords

• Electrical Capacitance Tomography sensor
• Finite Element Method
• shielding arrangement
• standing capacitance
• sensitivity map
• sensing field
• reconstructed image