Abstract
We have conducted a basic experiment on visualization of a pipe which is used for transport catalyst in industrial use. First two copper-electrodes are attached to inner side and outer side of the container. We have charged 5volt to the interelectrode and have changed frequency from 5kHz to 100kHz to obtain stable capacitance. The experiment has two conditions that container is filled with catalyst or air. The stable conditions have been confirmed at the time more than 50kHz. We have made a CT sensor with 12 electrodes attached to the pipe which has diameter of 270mm based on the experiment result.
