An electrical resistance tomography method for determining mixing in batch addition with a level change

For the first time, the capability of three-dimensional ERT to monitor systems with a significant level change under realistic process conditions and scales has been demonstrated. Level change within a 600 l vessel has been investigated with the addition of a brine tracer. Using the new method of a moving reference, the three-dimensional images can be reconstructed without level artifacting, allowing un-obstructed viewing of the mixing patterns. A moving finite element model has also been used to show the images with the actual level change.