Device for controlling the particle flow in an apparatus for mea

Details Device for controlling the particle flow in an apparatus for mea Device for controlling the particle flow in an apparatus for mea

1976-08-03

1978-01-24

Strecker, Gerard R.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

G01N 2707

Patent

active

040706176

ABSTRACT:
An apparatus for investigating the properties of particles held in liquid spension using the Coulter process, U.S. Pat. No. 2,656,508, wherein the flowrate of the particle suspension into the particle-free electrolyte carrier depends on the pressure difference between these two liquids. This pressure difference is made readily adjustable by setting the height of the level of the electrolyte by means of a separate, vertically movable chamber attached with a flexible lead to the main measuring chamber. The main measuring chamber is closed to the atmosphere, permitting maintenance of a pressure differential with respect to the atmosphere and with respect to the particle suspension.

REFERENCES:
patent: 3299354 (1967-01-01), Hogg
patent: 3340471 (1967-09-01), Coulter, Jr.
patent: 3504185 (1970-03-01), Zweig et al.
patent: 3688191 (1972-08-01), Claps
patent: 3793587 (1974-02-01), Thom

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