Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1993-04-29
1995-05-16
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
204406, 210 86, 210789, 422 8201, 422105, 436150, B01D 1712
Patent
active
054157846
ABSTRACT:
The sample separator including a first suction nozzle, serving also as an electrode, for extracting one of first and second components each having an impedance different from each other, a second suction nozzle, serving also as an electrode, for extracting the other component, a nozzle driving member for ascending/descending the nozzles as one unit, and an interface detecting member for detecting an interface between two components. The interface detecting member further including an impedance detector for detecting an impedance between the two nozzles serving also as the electrodes, a storing section for storing a first threshold value to detect the first component, and an operation control member for comparing the first threshold value stored in the storing member with a detected value obtained by the impedance detector, and for controlling the nozzle driving member based on a result of the comparison.
REFERENCES:
patent: 4487836 (1984-12-01), Takayanagi et al.
patent: 4927545 (1990-05-01), Roginski
patent: 4939925 (1990-07-01), Sakuma et al.
patent: 4962041 (1990-10-01), Roginski
Akutsu Masaki
Takahashi Nobukazu
Drodge Joseph W.
Olympus Optical Co,. Ltd.
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