Gauge apparatus for measuring liquid levels
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United States of America Patent
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Jan 20, 1987
Grant Date -
N/A
app pub date -
Oct 10, 1984
filing date -
Oct 10, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention pertains to gauge apparatus for measuring liquid levels comprising an elongated electrical sensor adapted to be arranged in upright position while immersed so constructed as to have an electrical resistance which may be varied. A spherical float is magnetically attracted to the sensor for rolling movement with respect thereto for varying the resistance in response to variation in elevation of float caused by changes in the level of the liquid. The resistance is measured thereby to provide an indication of such level. The magnetic attraction holds the float and sensor in operative engagement at all times including those during which the float changes height in response to changes in the level of the liquid being measured. The presence of different liquid is also detected in a given vessel, such as gasoline and water, and an indication and alarm of vessel overfill during a filling operation is provided.
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