Apparatus for the detection and measurement of suspended particu

Details Apparatus for the detection and measurement of suspended particu Apparatus for the detection and measurement of suspended particu

1985-06-05

1988-08-09

Strecker, Gerard R.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Particle counting

164 41, 266 99, 324 65R, G01N 2707, G01R 2722

Patent

active

047630655

ABSTRACT:
An apparatus and method for the detection and measurement in a molten metal sample of suspended particulates comprises a container having a composite wall including concentric electrically conducting outer and inner walls (10) and (12) and a disc (14) of refractory material having a passage (16) of predetermined size therethrough providing communication between the inside and outside of the container. In use, molten metal is pumped through the passage (16) so as to establish a current path from the inner wall through the passage to the out wall. A current is passed along the current path, and voltage changes are measured as indicating passage of suspended particulates through the passage.

REFERENCES:
patent: 3361965 (1968-01-01), Coulter et al.
patent: 3395343 (1968-07-01), Morgan et al.
patent: 3714565 (1973-01-01), Coulter et al.
patent: 4555662 (1985-11-01), Doutre et al.

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