Dual electromagnet partially disposable fluid flow transducer wi

Details Dual electromagnet partially disposable fluid flow transducer wi Dual electromagnet partially disposable fluid flow transducer wi

1994-01-07

1995-05-23

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

7386111, G01F 158

Patent

active

054171199

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 a portion of the housing of a transducer unit, and a disposable insert easily insertable into a cavity of the housing. The electromagnets generate, at any one time, magnetic fields having opposite 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 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 pick-up sockets in said housing.

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patent: 5220841 (1993-06-01), Brown et al.
patent: 5325728 (1994-07-01), Zimmerman et al.

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