Fluid sampling system

Details Fluid sampling system Fluid sampling system

1993-08-03

1994-10-11

Raevis, Robert

Measuring and testing

Sampler, sample handling, etc.

Capture device

G01N 114

Patent

active

053536525

ABSTRACT:
An fluid sampling system allows sampling of radioactive liquid without spillage. A feed tank is connected to a liquid transfer jet powered by a pumping chamber pressurized by compressed air. The liquid is pumped upwardly into a sampling jet of a venturi design having a lumen with an inlet, an outlet, a constricted middle portion, and a port located above the constricted middle portion. The liquid is passed under pressure through the constricted portion causing its velocity to increase and its pressure to decreased, thereby preventing liquid from escaping. A septum sealing the port can be pierced by a two pointed hollow needle leading into a sample bottle also sealed by a pierceable septum affixed to one end. The bottle is evacuated by flow through the sample jet, cyclic variation in the sampler jet pressure periodically leaves the evacuated bottle with lower pressure than that of the port, thus causing solution to pass into the bottle. The remaining solution in the system is returned to the feed tank via a holding tank.

REFERENCES:
patent: 4118987 (1978-10-01), Zeh
patent: 4134289 (1979-01-01), Bohl et al.
patent: 4638675 (1987-01-01), Sperinck et al.
patent: 5176035 (1993-01-01), Hartstone
Spectrum '92-Nuclear and Hazardous Waste Management dated Aug. 23-27, 1992.

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