DEVICE TO MEASURE PARAMETERS OF DIELECTRICS AT HEATING Russian patent published in 2015 - IPC G01R27/26 

FIELD: electricity.

SUBSTANCE: device comprises a cylindrical resonator limited by the SHF waveguide end wall at one side and by a displaceable piston with rod at the other side, a charging door for mounting of the tested material sample, a temperature-measuring instrument, shielding gas feed, rod and piston travelling mechanism. At that the SHF waveguide end wall is made water cooled and the heater comprises a row of tubular graphite elements with one-way output to current leads. The piston is installed at a split rod, which heated part is made as a thin-wall tube of heat-resisting material, while the other part is made as a water-cooled tube equipped with a flange with a sealing gasket. At that an optical pyrometer is connected hermetically to the water-cooled part of the rod and the rod is fixed at the platform of a linear module. The rod and piston travelling mechanism includes two serial-operated linear modules with electromechanical drives combined with the common displacement-measuring sensor and shielding gas feed is placed in the pyrometer ocular zone.

EFFECT: increased accuracy of dielectric parameters measurement and automation of measurement process.

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