Sensors for automatic moisture measurement of bulk and liquid materials

At present, the problem of moisture measuring during extraction, processing and transportation of mineral resources is becoming increasingly important. The aim of this study was to design a moisture meter for mining and production of oil and gas bulk and liquid products in the on-line mode. On the basis of the review and analysis of technical literature, it was found that one of the most simple and effective methods of controlling a moisture content of bulk materials and liquids is a high frequency method. The results of the experimental studies of moisture measurement of bulk materials and liquids with the high-frequency method using different measuring cell designs and inclusion circuits are presented. The results of these studies are the basis for creation of high-precision devices, which allow an automatic moisture control of liquid and bulk materials in a real time mode with the required accuracy.