Liquid level detector

Details Liquid level detector Liquid level detector

1981-01-29

1982-09-21

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

338 28, H01C 700

Patent

active

043509681

ABSTRACT:
A liquid level sensor having a pair of upright conductors spaced by an insulator defining a first high resistance path between the conductors. An electrically conductive path is interposed between the upright conductors at a discrete location at which liquid level is to be measured. It includes a liquid accessible gap of a dimension such that the electrical resistance across the conductor when the gap is filled with the liquid is detectably less than when the gap is emptied. The conductor might also be physically altered by temperature changes to serve also as an indicator of elevated temperature.

REFERENCES:
patent: 2792566 (1957-05-01), Shanhouse et al.
patent: 3437107 (1969-04-01), Waseleski, Jr.
patent: 3792407 (1974-02-01), Ehrenfried et al.
patent: 3896409 (1975-07-01), Micheli et al.
patent: 3905243 (1975-09-01), Goldfuss
patent: 4277773 (1981-07-01), Blatnik

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