Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Patent
1995-09-14
1997-10-07
Brock, Michael
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
324643, G01R 2726
Patent
active
056752598
ABSTRACT:
Method and apparatus for making measurements on fluids related to their complex permeability are disclosed. A microwave probe is provided for exposure to the fluids. The probe can be non-intrusive or can also be positioned at the location where measurements are to be made. The impedance of the probe is determined, in part, by the complex dielectric constant of the fluids at the probe. A radio frequency signal is transmitted to the probe and the reflected signal is phase and amplitude detected at a rapid rate for the purpose of identifying the fluids. Multiple probes may be selectively positioned to monitor the behavior of the fluids including their flow rate. Fluids may be identified as between two or more different fluids as well as multiple phases of the same fluid based on differences between their complex permittivities.
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"Electromagnetic Probe Technique for Fluid Flow Measurements", G. D. Arndt & J. R. Carl, admitted prior art.
Arndt G. Dickey
Carl James R.
Nguyen Thanh X.
Barr Hardie R.
Brock Michael
The United States of America as represented by the Administrator
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