Design Of Devices For Monitoring The Humidity Of Materials Based On Capacitive Converters

Document Type : Primary Research paper


1 Doctor of Technical Sciences, Professor, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers100000,Tashkent,Uzbekistan

2 Researcher, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers 100000,Tashkent,Uzbekistan

3 Researcher, Jizzakh Polytechnic Institute, 130100, Jizzakh, Uzbekistan


The issues of designing a high-frequency device for monitoring the moisture content of grain and grain mass and products of their industrial processing in industrial conditions are considered. A tactical analysis of previously performed studies on the choice of operating frequency and calculation of the capacity of primary converters is carried out and the optimal option for choosing the operating frequency and capacity of humidity measuring converters is proposed.
The features of granular materials are shown, where it is necessary to take into account when mathematically describing the dielectric properties of the materials under study from their humidity, that the dielectric properties of wet materials are described by mixture formulas that are sufficiently accurate for moisture-containing liquids (including grain mass).
The Wiener formulas describing mathematical models of wet materials, the dependencies connecting the permittivity of an n-phase mixture with the permittivity and volume concentrations of individual components are described. The scientific and practical value of the article is presented, it is shown where grain moisture is one of the most important technological parameters, which requires the development of humidity control devices and monitoring humidity at all stages of grain and granular materials production.