Automatic moisture in fine-dyspersated stream control system based on microwave frequency method is presented. Minimizing means of interrupting factors peculiar to this method of measurement are produced and systematically proved.
Potassium chloride percentage in continuous transported ore flows and products of potassium plants recycling automatic control system is offered and described. It differs fundamentally from used before ones at bulk solids containing natural radio-activity elements effective constituents producing and recycling plants. Sensing device is used in this information-measuring system (IMS). It allows to realize automatic control in flows for that instantaneous productivity fluidity in wide limits is resided. Using such IMS gives considerable economic effect by measurements error lowering and their quickness increase.
A method is offered and the device bringing into effect this method which excludes the impact of electrode wear and inter-electrode space on metrological parameters of moisture indicators is presented. It is shown that by use of the known capacitance sensors with the help of the proposed algorithm of transformation it is possible to switch from the capacitance meters of dispersion material composition to pure dielcometric meters. In this situation metrological parameters do not depend on part specifications of their sensors. In addition the impact of all non-diagnostic markers is excluded in this device.
В высокочастотных влагомерах с емкостным датчиком необходимо минимизировать влияние на результаты измерений переменных активных потерь контролируемого материала ...
Электрофизические характеристики продуктов обогащения, поступающих на горно-обогатительные предприятия с разных месторождений, как правило, разнородны ...
In the course of long-term operation of continuous moisture-metric systems developed at the Department of Automation of Production Processes of the Leningrad Mining Institute, a significant influence on their operation of the wear of the base and working electrodes of the sensor. ...
In a discrete moisture-metric system of F-meter type the whole set of measurements by the capacitive component is brought to the graduation temperature in accordance with the temperature coefficient of the capacitance of the measured material...
В создании высокочастотных систем непрерывного контроля влажности наиболее трудоемки эффективные и надежные в эксплуатации датчики. Датчики влажности обычно контактируют с сыпучим материалом или находятся в непосредственной близости от него, подвергаясь вибрациям, температурным воздействиям, истиранию, воздействию окружающей среды (сырости, запыленности, химической активности), т. е. мешающих факторов, искажающих информацию ...
