Pressure reducing device

Details Pressure reducing device Pressure reducing device

1982-07-19

1985-01-29

Anderson, Bruce C.

Radiant energy

Radiation tracer methods

Radioactive tracer methods

250288, 250380, 250385, G01T 1161, G01T 118

Patent

active

044968370

ABSTRACT:
The present invention relates to a pressure reducing device and to an apparatus for detecting aerosols and particularly aerosols of solid particles emitting .alpha. rays. This apparatus comprises a measuring chamber equipped with a sampling filter and a radiation detector and linked with the outside by an inlet pipe and an outlet pipe. The inlet pipe is equipped with a venturi tube making it possible to produce a pressure reduction in the measuring chamber and exert on the solid particles of the aerosol fluid flow forces exceeding the forces tending to make these particles adhere to the walls. Application to the detection of .alpha. radiation emitting aerosols.

REFERENCES:
patent: 2653620 (1953-09-01), Morgan
patent: 2721270 (1955-10-01), Bennett
patent: 2775707 (1956-12-01), Benapfl
patent: 3130920 (1964-04-01), Devillard
Van Nostrand's Scientific Encyclopedia, Fifth Ed., 1976, p. 1069.

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