Monitor for the control and/or checking of two or more functions

Details Monitor for the control and/or checking of two or more functions Monitor for the control and/or checking of two or more functions

1986-05-29

1991-02-05

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210 90, 210 96, 21032165, B01D 6134

Patent

active

049902580

ABSTRACT:
A control panel for regulating plural parameters is provided with plural displays, each associated with one parameter. A single manually moveable knob is provided for entering a manually variable signal. Individual actuators such as push buttons are disposed adjacent each of the display means. The control panel is arranged to interpret the variable signal provided by the maneuvering element or knob as a new value for a control constant associated with a particular parameter depending upon which push button is actuated. The operator may select a particular parameter for resetting by pressing the button adjacent the display for that particular parameter. The panel simplifies setting of plural parameters in complex control systems such as the control system for a hemodialysis apparatus. The control system may incorporate plural microprocessors. Control data input into the microprocessors is digitally duplicated and transferred between the microprocessors to avoid entry of conflicting data into the two separate microprocessors.

REFERENCES:
patent: 3947665 (1976-03-01), Hundley
patent: 4153554 (1979-05-01), von der Heide et al.
patent: 4180854 (1979-12-01), Walden et al.
patent: 4370983 (1983-01-01), Lichtenstein
patent: 4514798 (1985-04-01), Lesche et al.

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