Electrical resistance tomography system based on CompactPCI for multiphase flow measurement

As a non-radiant and unperturbed 2D/3D boundary technique, Electrical resistance tomography (ERT) provides an effective way of monitoring and on-line measurements for multiphase fluid. To better satisfy industrial requirements, a parallel ERT system based on CompactPCI is described in this paper. The performance of this system have been tested, and the results show that the system works properly with SNR above 62dB with perfect repeatability less than 0.7%, and the data acquisition rate could reach almost 1400 frames per second under 50 kHz excitation. Static experiments have been conducted for image reconstruction and the images demonstrated good resolution relative to the actual object distribution. The parallel ERT system has provided a firm foundation for the dynamic multiphase flow measurements.