Device for taking samples of radioactive and/or toxic suspension

Details Device for taking samples of radioactive and/or toxic suspension Device for taking samples of radioactive and/or toxic suspension

1990-03-22

1991-08-13

Raevis, Robert

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

7386474, G01N 114

Patent

active

050386239

ABSTRACT:
A device for taking samples of radioactive and/or toxic suspensions containing solids includes a single needle head for taking samples from a liquid circulating in a pipe loop. The liquid is drawn off into a sample vessel with the liquid being pumped by a vacuum-assisted air lift. In order to minimize the risk of clogging in such a sampling device and to be able to obtain reliably representative samples, the one-needle head has a mixing chamber which widens conically toward the interior of the housing of the sampling device. The feed line extends into this conical mixing chamber to a location just ahead of the needle opening in the base. The opening at the end of the feed line has a larger diameter than the inside diameter of the sampling needle disposed in the needle head. With this configuration, a higher flow velocity is achieved together with a high degree of turbulence of the liquid in the sampling device.

REFERENCES:
patent: 2759743 (1956-08-01), Bloom
patent: 4494413 (1985-01-01), Bukkems et al.
patent: 4635969 (1987-01-01), Jackson
patent: 4638675 (1987-01-01), Sperinck et al.
patent: 4653333 (1987-03-01), Zeh

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