Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1991-07-18
1994-11-01
Regan, Maura K.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324453, 361227, G01R 2912, G01N 2760
Patent
active
053610342
ABSTRACT:
An apparatus for measuring the conductivity of a fluid is disclosed. The invention 10 provides both a contact and non-contact monitoring of fluid conductivity by measuring the A.C. dielectric properties of the fluid. The invention 10 transmits an electromagnetic wave into the fluid 22 and analyzes the transmitted and reflected waves providing an indication of the conductivity of the fluid 22. The invention 10 is versatile in that it allows for the fluid to be in the form of a spray. In a specific illustrative implementation, a novel nozzle is provided to monitor the conductivity of paint spray 22 as it passes therethrough.
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patent: 4117715 (1978-10-01), Hoenig
patent: 4321546 (1982-03-01), Schneider, Jr.
patent: 4433296 (1984-02-01), Kolibas
patent: 4986471 (1991-01-01), Hethcoat
patent: 5068617 (1991-11-01), Reich
patent: 5093625 (1992-03-01), Lunzer
patent: 5117190 (1992-05-01), Pourprix
Bates Kenn S.
Chang David B.
Pierce Brian M.
Denson-Low W. K.
Grunebach Georgann S.
Gudmestad Terje
Hughes Aircraft Company
Regan Maura K.
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