DEVICE FOR MEASURING DIELECTRIC PROPERTIES OF MATERIALS WHILE HEATING Russian patent published in 2021 - IPC G01R27/26 

FIELD: instrumentation.

SUBSTANCE: it is used for measuring dielectrics at ultrahigh frequencies when heated by the cavity method. A device is proposed for measuring the dielectric properties of materials while heating, which contains a cylindrical cavity, bounded on one side by the upper end wall of the cavity with coupling holes and containing a cylindrical resonator, bounded on one side by the upper end wall of the resonator with coupling holes, configured for axial movement by means of the mechanical drive feeding screw, wherein a traverse is located. One end of the traverse is fixed to the end wall of the resonator, the other end is attached to the platform of the linear displacement sensor, and from the other side it is fixed with a movable lower piston mounted on a hollow composite rod, fixed on the platform of the linear displacement module and connected to the linear displacement transducer. The device also includes a heater, a temperature meter and a shielding gas supply, where a hole is made in the resonator cylinder above the upper end wall of the resonator with the coupling holes, through which the shielding gas is supplied into the cavity of the resonator, and below the movable piston in the resonator cylinder wall a hole is made for pumping gas out of the resonator volume, while the gas is supplied to the resonator under pressure through the regulator.

EFFECT: achieved positive effect consists in increased accuracy of measurements of the parameters of dielectric destructive materials when heated using the measurement method in a cavity resonator by removing the sample degradation products outside the resonator.

1 cl, 1 dwg