UHF METHOD FOR DETERMINING CONCENTRATION AND ELECTROPHYSICAL PARAMETERS OF FERROMAGNETIC PARTICLES IN LIQUID CARRIER Russian patent published in 2005 - IPC

FIELD: ferromagnetic materials.

SUBSTANCE: dielectric pipeline with liquid is placed in high-frequency electromagnetic and constant magnetic fields and changes of parameters, characterizing high-frequency radiation, are recorded. Dielectric pipeline with researched ferromagnetic liquid is placed in portion of circular wave-conductor, where by means of exciting device in form of rod wave H₁₁ is excited. Through wave-conducting coaxial transfer in one of shoulders of wave-conducting Y-pipe connected in H-plane by means of second exciting rod wave H₁₀ is serially excited and measurement of concentration of ferromagnetic particles in liquid is performed. Current in solenoid for magnetizing portion of circular wave conductor is enabled, falling high-frequency radiation is linearly polarized, direction of strain vector of constant magnetic field is combined with direction of radiation in liquid and strain of constant magnetic field is increased to limit value H_li - moment of change of polarization of output wave from linear to rotating. On basis of maximal angle of rotation of vector of electric field of linearly polarized wave dielectric penetrability of mixture is determined, and on basis of magnetization current magnetic activity of ferromagnetic particles is determined and magnetic penetrability of mixture and correction for change of magnetic activity is made for measurement of ferromagnetic particles concentration.

EFFECT: higher efficiency.

1 dwg