Measuring and testing – Volume or rate of flow – System
Patent
1975-09-29
1976-12-28
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
System
G01F 158
Patent
active
039994430
ABSTRACT:
An electromagnetic flowmeter system capable of measuring fluids having any degree of conductivity, including fluids having dielectric properties. The fluid to be measured is conducted through a dielectrically-lined flow tube to intersect a transverse magnetic field produced by an electromagnet, thereby inducing a voltage in a pair of planar electrodes mounted within the dielectric lining, each electrode being provided with a driven shield. The electromagnet is excited by a direct voltage which is periodically interrupted to produce a periodic steady state field whereby unwanted in-phase and quadrature components are minimized.
REFERENCES:
patent: 2733604 (1956-02-01), Coulter
patent: 3759097 (1973-09-01), Cushing
patent: 3783687 (1974-01-01), Mannherz et al.
Appel Eggert
Geisler Gottfried
Kiene Wilfried
Seebode Albert
Fischer & Porter Co.
Ruehl Charles A.
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