Apparatus for sensing liquid level

Details Apparatus for sensing liquid level Apparatus for sensing liquid level

1999-03-31

2000-05-30

Larkin, Daniel S.

Measuring and testing

Liquid level or depth gauge

Float

73313, G01F 2312, H01H 3600

Patent

active

060678542

ABSTRACT:
The level of liquid in a tank is sensed using a pair of magnets arranged such that when in proximity to each other, a magnetic force is generated that activates a micro-switch. One of the magnets is mounted on a float carried on the surface of the liquid and constrained for vertical movement within a tube. The second magnet is stationarily mounted on the tube at a position where the liquid level is to be sensed. A latch mechanism actuated by the movement of the second magnet latches the micro-switch in an actuated position until actuated by the second magnet a second time.

REFERENCES:
patent: 3982087 (1976-09-01), Bachman
patent: 4064755 (1977-12-01), Bongort et al.
patent: 4142079 (1979-02-01), Bachman
patent: 4186419 (1980-01-01), Sims
patent: 5136884 (1992-08-01), Lovett

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