System and method of liquid level detection

Details System and method of liquid level detection System and method of liquid level detection

2006-01-24

2006-01-24

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Float

C073S305000, C073S313000, C073S319000, C073S323000

Reexamination Certificate

active

06988406

ABSTRACT:
A system of liquid level detection has a vessel, a sight glass in fluid communication with the vessel, a float positioned in the sight glass, a proximity switch affixed exterior of the sight glass for transmitting a signal relative to a sensing of the float in proximity to the proximity switch, a timer cooperative with the proximity switch for measuring a period of time relative to the signal from the proximity switch, and an indicator cooperative with the timer for producing a humanly perceivable indication when the period of time is at a predetermined limit. The proximity switch can be positioned so as to detect a low level of liquid in the vessel or a high level of liquid in the vessel.

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