DEVICE FOR MEASURING PHYSICAL PARAMETERS OF MATERIAL Russian patent published in 2018 - IPC G01R27/26 G01N27/02 

FIELD: measuring equipment.

SUBSTANCE: device for measuring physical parameters of the material comprises a primary transducer made in the form of a length of a long transmission line with a signal and screen conductors, a space between them is intended for filling with controlled material, an amplitude detector, a generator of sounding signal made on the basis of a harmonic signal shaper tuned by frequency, measuring and control device, and first and second additional sections of transmission line with signal and screen conductors. The input of first section is connected to the input of primary converter, and the output of this section is connected to the input of amplitude detector. The input of the second section is connected to the output of the generator, and the output of this section is connected to the input of the primary converter. The input of the first and the output of the second additional sections are introduced inside the primary converter. The connection of signal conductors of the first and second sections to the signal conductor of the primary converter is inside the primary transducer directly in the area filled with controlled material. The first and second additional sections in the area of connection with the primary converter are in the form of electric inputs providing sealing of the primary transducer and transmission of the probing signal to the area occupied by the controlled material.

EFFECT: increased measurement accuracy, expanded range of working pressures, increased sensitivity in materials measurement with low dielectric permeability.

9 cl, 7 dwg