Electronic liquid level monitor and controller

Details Electronic liquid level monitor and controller Electronic liquid level monitor and controller

G - Physics

05

B

341/34.1

G05B 15/00 (2006.01) D06F 39/08 (2006.01) G01F 23/18 (2006.01) G05D 9/12 (2006.01)

Patent

CA 1122303

ELECTRONIC LIQUID LEVEL MONITOR AND CONTROLLER ABSTRACT OF THE DISCLOSURE The cycles of an oscillator varying in frequency in pro- portion to the changing level of a monitored liquid are counted over a fixed period of time. A derived submultiple of the count is compared relative to an electronically stored table of numbers indicative of known liquid levels. Predetermined relationships between the count and the table initiate control functions for maintaining or varying the level of monitored liquid during a pro- grammed series of operations such as, for example, the programmed cycles of a microcomputer controlled clothes washing machine.

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