METHOD TO MEASURE COMPREHENSIVE DIELECTRIC PERMEABILITY OF LIQUID AND LOOSE SUBSTANCES IN WIDE RANGE OF FREQUENCIES Russian patent published in 2013 - IPC G01R27/26 

FIELD: electricity.

SUBSTANCE: in the method to measure comprehensive dielectric permeability (CDP) of liquid and loose bodies in a wide range of frequencies within one cell filled with a tested substances, used in the frequency range of 100-4000 MHz as a section of a coaxial line, and in the frequency range of 1 kHz - 1 MHz as a cylindrical capacitor. At the same time in the frequency range of 100-4000 MHz the comprehensive dielectric permeability is calculated via measured values of the complex coefficient of electromagnet wave transmission, and in the frequency range of 100 Hz-1 MHz - via measurement of full conductivity, the novelty is the fact that prior to measurement of CDP an empty cell is placed into the additional section of the coaxial line (dwg.1), the inner diameter of the external conductor of which is determined on the basis of the following formula: where: d - external diameter of the cell body; Z₀₁ - wave resistance of an additional section of a coaxial line, in which a cell is placed, at the same time the cell is connected as a cylindrical capacitor into an opening of an inner conductor of the additional section of the coaxial line shorted at the outlet, and its calibration is carried out, for this purpose parameters of an equivalent electric circuit of the additional section of the coaxial line are determined with the empty cell arranged in it, then the cell is filled with the tested substance, and in the frequency range of 1 MHz-100 MHz CDP is determined using formulas that connect S₁₁ with parameters of the equivalent circuit.

EFFECT: measurement in one cell with low error in entire frequency range.

5 dwg