Optimum design of conducting sensor for on-line moisture measurement

The conducting sensor type was decided by several experiments. The surface plane sensor is satisfactory to on-line measurement of granular material moisture because of its good repeatability. Combining with orthogonal regression design method, the finite element method of steady current field was also used to model the optimum-conducting sensor, in order that the accuracy of on-line moisture measurements was improved. The conducting sensor sensitivity was maximum when the thickness varies, the relative error met the requirements. The two dimensions model of conducting sensor is established and three dimensions parameters are decided based on the optimum design. The optimum-conducting sensor was used to on-line measure a sinter mixture moisture at the end, and experiment results show its high accuracy.