Control system for monitoring salt levels in a brine tank

Details Control system for monitoring salt levels in a brine tank Control system for monitoring salt levels in a brine tank

2007-04-27

2010-10-19

Warden, Jill (Department: 1797)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Mechanical control system

C700S281000, C422S106000, C422S112000, C417S036000, C417S038000, C417S211500, C417S297500

Reexamination Certificate

active

07818094

ABSTRACT:
A control system monitors salt level in a brine tank having a water inlet. The control system comprises a memory device storing an amount representing actual salt level in the brine tank. A sensor determines water level in the brine tank. A control valve is operatively connected between a water supply and the water inlet for controllably supplying water to the brine tank. A logic circuit is operatively connected to the memory device, the sensor and the control valve for determining salt level in the brine tank. The logic circuit periodically operates the control valve responsive to sensed water levels to fill the brine tank with water, updates the stored actual salt level in the memory device responsive to water supplied to the brine tank, and provides an indication when actual salt level in the brine tank falls below a select salt level.

REFERENCES:
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patent: 5297428 (1994-03-01), Carr et al.
patent: 6456202 (2002-09-01), Johannsen et al.
patent: 6696963 (2004-02-01), Zimmerman et al.
patent: 6696966 (2004-02-01), Bearak
patent: 6783666 (2004-08-01), Takeda et al.
patent: 2002/0091467 (2002-07-01), Rose et al.

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