Let us consider the principle underlying the measurement of pulp density by the capacitive method in the case of a non-contact two-electrode measuring cell. In the analysis we will use the equation for the imaginary Bp component of the conductivity of the equivalent circuit of the cell ...

The objective of the study was to investigate the potential electric fields of a seven-electrode conductometric transducer in order to find its optimal design parameters. Since the seven-electrode converter is two four-electrode cells connected in series, modeling was performed for the case of a four-electrode primary converter .....

The density of liquid products in mineral processing is the most important parameter by means of which it is possible to influence and control the course of technological processes. ...

Piezoelectric sensors of the volumetric type are widely used in the measurement of rapidly changing pressures. This is explained by their lack of inertia, the possibility of obtaining with their help quantitative and qualitative characteristics of the quantity being measured and linearity of the piezoelectric effect. ...

In the high-frequency moisture-measuring system, developed at the Leningrad Mining Institute and designed for rapid determination of the moisture content of apatite concentrate, the output parameter is capacitance. …

The problem of studying physical phenomena during an explosion is currently very topical. Some processes during an explosion have durations so short that only electronic equipment can record them. The presence of a pronounced piezoelectric effect in some crystals, as well as in all ferroelectrics, makes it possible to develop low-inertia methods for measuring pressures, including shock wave pressure. Piezoelectric sensors have been used to study shock waves both in our country and abroad. ...

The electrophysical properties of materials are influenced by many factors: moisture content, temperature, grain-size and chemical compositions, etc. Therefore, the total differential, for example, of the volumetric resistance of saltpeter can be represented as an equation. Similar equations can be written for capacitance and dielectric loss factor.. ...