HIGH-FREQUENCY CAPACITIVE CONTACTLESS SENSOR OF SPECIFIC ELECTRICAL CONDUCTIVITY OF LIQUID Russian patent published in 2021 - IPC G01N27/06 G01R27/22 

FIELD: conductometry.

SUBSTANCE: invention relates to the field of conductometry; it can be used to measure the specific electrical conductivity of electrolytes in physical-chemical studies. The proposed high-frequency capacitive contactless sensor for continuous measurement of the specific electrical conductivity of liquid is a dielectric pipe, through which liquid under study flows, on the outer side of the pipe, two or more metal electrodes are fixed opposite each other, made in the form of rectangular plates tightly adjacent to the outer surface of the pipe, connected to a source of alternating frequency current, on the inner side, internal metal electrodes are fixed opposite to external electrodes, made in the form of rectangular plates tightly adjacent to the inner surface of the pipe, creating capacitors of capacity C₁ with external electrodes, the dielectric of which is pipe walls, two internal electrodes are plates of internal capacitors of capacity C₂, the dielectric of which is a layer of liquid under study.

EFFECT: ensuring the possibility of continuous measurement with the exclusion of sensor contact with the reaction mass.

1 cl, 4 dwg