What is Electrical Resistance Tomography?
Electrical Resistance Tomography (ERT) is a measurement technique for obtaining information about the contents of process vessels and pipelines. Multiple electrodes are arranged around the boundary of the vessel at fixed locations in such a way that they make electrical contact with the fluid inside the vessel but do not affect the flow or movement of materials. Should I use ERT/ECT in my process? ERT should be used where the continuous material is electrically conducting (eg water acids bases and ionic solutions). ECT should be used where the continuous material does not conduct electricity eg air/oil. If the process moves to from conducting to no-conducting or visa versa then a combined ECT/ERT system is recommended. Example of this might be polymerization, drying or multiphase flow.
