Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent
1994-09-23
1995-09-19
Chilcot, Jr., Richard E.
Measuring and testing
Volume or rate of flow
By measuring electrical or magnetic properties
7386108, 128691, G01F 158
Patent
active
054507588
ABSTRACT:
An electromagnetic flow meter for measuring the flow of conductive fluids, e.g. blood, in an extracorporeal circuit. The electromagnetic flow meter utilizes two electromagnets positioned in the housing of a transducer unit, and a disposable insert easily insertable into a tray which slides into a cavity of the housing. The electromagnets generate, at any one time, two magnetic fields having same directions. The conductive fluid flows in a direction perpendicular to the direction of the magnetic fields for inducing first and second voltages. First and second voltage sensing electrodes extend into the bore of the disposable insert and provide the voltages, generated by the fluid flow cutting through the magnetic fields, to first and second slide terminals in the housing. The voltages are provided to a summation amplifier via respective isolation amplifiers, wherein the summation amplifier generates a summation voltage proportional to the flow rate of the conductive fluid passing through the magnetic fields.
REFERENCES:
patent: 3967500 (1976-07-01), Forster
patent: 4195515 (1980-04-01), Smoll
patent: 4236411 (1980-12-01), Ketelsen
patent: 4346605 (1982-08-01), Skladzien et al.
patent: 4520650 (1985-06-01), Palmer et al.
patent: 4635486 (1987-01-01), Jacobsen et al.
patent: 4727754 (1988-03-01), Ruckel
patent: 4881413 (1989-11-01), Georgi et al.
patent: 5090250 (1992-02-01), Wada
patent: 5220841 (1993-06-01), Brown et al.
Bushnell Robert E.
Chilcot Jr. Richard E.
Dougherty Elizabeth L.
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