SENSOR OF LIQUID DIELECTRIC ELECTROCONDUCTIVITY MONITORING Russian patent published in 2010 - IPC G01N27/06 

FIELD: measuring equipment.

SUBSTANCE: invention is related to continuous measurement of electric conductivity of liquid mediums, and is intended, in particular for monitoring of transformer oils condition in operating electrical power equipment of high voltage. Sensor for monitoring of liquid dielectric electroconductivity comprises two coaxially installed cylindrical electrodes, high-voltage and measuring ones, with electric leads placed into body with holes for inlet and outlet of inspected liquid. Body is arranged in the form of hollow metal grounded reservoir with electric insulating coat on internal surface and two covers with cylindrical ledges on outer side. Covers enter in area of end parts of measuring and high-voltage electrodes into gap between them being separated from electrodes by means of insulation gaskets. Each cover is arranged with one of specified holes.

EFFECT: elimination of effect at process of measurement from external noise, conductivity of used dielectric materials and surface conductivity along borders of interface hard dielectric - liquid, and also provision of possibility to use it in pipelines with moving liquids in wide range of flow speeds and various temperatures.

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