Non-invasive gauge glass liquid level sensor apparatus

Details Non-invasive gauge glass liquid level sensor apparatus Non-invasive gauge glass liquid level sensor apparatus

2005-11-15

2005-11-15

Lee, Kevin (Department: 3753)

Fluid handling

Liquid level responsive or maintaining systems

Electrical characteristic sensing

C137S386000, C073S29000R, C073S30400R, C073S323000, C340S618000, C340S620000

Reexamination Certificate

active

06964278

ABSTRACT:
An apparatus is disclosed for electronically and non-invasively sensing liquid level in a boiler or other liquid-containing vessel. The apparatus, comprising a sensor and sensor integrated circuit can be uniquely designed for external attachment to any commercially available gauge glass used for visually determining liquid level in a boiler and other liquid-containing vessels. The apparatus, which employs proximity level-sensing technology, is suitable for determining liquid level provided the liquid-containing boiler or vessel is metallic and the liquid is electrically conductive, for example water and other aqueous solutions.The apparatus can additionally comprise at least one, preferably two externally located electrical pushbutton switches, for example “water feed” and “test”, for manually adding water to the boiler and for testing the apparatus' proper working condition with a simulated low water condition, respectively.The apparatus can additionally comprise light emitting diodes (LEDs) to indicate status of a given system that employs the present invention, for example indication of power to the unit, low water condition, and water feed.

REFERENCES:
patent: 3939360 (1976-02-01), Jackson
patent: 4484862 (1984-11-01), Jensen
patent: 4749988 (1988-06-01), Berman et al.
patent: 5289846 (1994-03-01), Elias et al.
patent: 5315872 (1994-05-01), Moser
patent: 5465766 (1995-11-01), Siegele et al.
patent: 5563584 (1996-10-01), Rader et al.
patent: 5857482 (1999-01-01), Dowling
patent: 6588272 (2003-07-01), Mulrooney et al.

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