Method and apparatus for sensing a fluid handling

Details Method and apparatus for sensing a fluid handling Method and apparatus for sensing a fluid handling

1992-09-23

1993-09-14

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324697, 324 714, 422 82, 422106, 436 5, 436150, G01N 114, G01N 2117

Patent

active

052452921

ABSTRACT:
Method and apparatus for sensing fluid interface(s) in a complex fluid such as centrifuged blood, includes a sensing assembly with a microwave source and a microwave sensor positioned in spaced opposed relation, the microwave source and sensor defining a microwave propagation path. Relative motion is induced between the sample container and the microwave energy propagation path in the region between the source and sensor in a direction that intersects and is essentially perpendicular to the microwave energy propagation path; and processor apparatus responsive to the scanning apparatus and the modification in microwave energy sensed by the microwave sensor provides an indication(s) of the location(s) of a fluid interface(s) in the container.

REFERENCES:
patent: 3265873 (1966-08-01), Sawyer
patent: 3286163 (1966-11-01), Holser et al.
patent: 4107993 (1978-08-01), Shuff et al.
patent: 4873875 (1989-10-01), Cork

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