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A sensor for use with time domain reflectometry systems to allow measurement of relative proportions of intermixed constituents having differing electrical permittivities contained in a fluid mixture. The sensor comprises a central primary electrode and a pair of adjacent outer secondary outer elect

A sensor for use with time domain reflectometry systems to allow measurement of relative proportions of intermixed constituents having differing electrical permittivities contained in a fluid mixture. The sensor comprises a central primary electrode and a pair of adjacent outer secondary outer electrodes. The fluid mixture is located between the electrodes during sensing. A dielectric layer covers exposed sensing surfaces of the electrodes to electrically isolate the electrodes from the fluid mixture and to prevent dissipation of a time domain reflectometry signal propagated through the sensor.

대표청구항 ▼

A sensor for use with time domain reflectometry systems to allow measurement of a fluid mixture having intermixed constituents with differing electrical permittivities, comprising: at least one primary electrode made from electrically conductive material; said at least one primary electrode having s

A sensor for use with time domain reflectometry systems to allow measurement of a fluid mixture having intermixed constituents with differing electrical permittivities, comprising: at least one primary electrode made from electrically conductive material; said at least one primary electrode having sensing surfaces adjacent to which the fluid mixture is located during sensing; said primary electrode being for conducting a pulsed time domain reflectometry signal along the length thereof; at least one secondary electrode having a spaced relationship with said at least one primary electrode to allow the fluid mixture to be present between the at least one primary electrode and the at least one secondary electrode; said at least one secondary electrode being made from electrically conductive material; a dielectric layer covering at least said sensing surfaces of said at least one primary electrode, to electrically isolate the primary electrode from the fluid mixture and prevent dissipation of a time domain reflectometry signal propagated through said sensor, said dielectric layer having a thickness of from about 1 thousandths of an inch to about 10 thousandths of an inch.