Patent ID: 6303024
Filing Date: 2001-10-16
Classification: B01D,Y10T

Abstract:
An electronic controller for controlling fill, draw and settle operations of a plurality of settling tanks coupled to a reverse osmosis system, said electronic controller comprising:input terminal means for receiving a pair of liquid level input signals from each of said plurality of settling tanks which indicate a liquid level of a liquid within each of said plurality of settling tanks;bounce eliminator circuit means connected to said input terminal means for eliminating oscillations from said pair of liquid level input signals;processing means connected to said bounce eliminator circuit means to receive from said bounce eliminator circuit means said pair of liquid level signals for each of said plurality of settling tanks;said processing means including state machine means having a plurality of operational states and a plurality of non-operational states, said state machine means processing said pair of liquid level signals from each of said plurality of settling tanks to generate a plurality of logic level control signals during the operational states of said state machine means;coupling means connected to said processing means to receive said plurality of logic level control signals and then provide a plurality of isolated control signals which activate fill, draw and pump valves associated with said plurality of settling tanks; andoutput terminal means connected to said coupling means and said fill, draw and pump valves associated with said plurality of settling tanks, said output terminal means supplying said isolated control signals to said fill, draw and pump valves to selectively activate said fill, draw and pump valves associated with said plurality of settling tanks.