Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent
1991-02-13
1992-08-18
Cuchlinski, Jr., William A.
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
338 33, 338177, G01F 2360
Patent
active
051388812
ABSTRACT:
A liquid level sensor for sensing liquid levels within a container is disclosed. The sensor includes a conductive plastic resistor and conductive plastic conductors deposited onto a thin polymer insulator. The conductive plastic resistor is a potentiometric resistive track which is electrically contacted at points along the length of the resistor by a contact assembly attached to a float. The polymer insulator is attached to a conductive support member or conductive strip disposed substantially vertically in the liquid. The float is disposed about the conductive strip. The contacts provide a short circuit between the resistive strip and conductive strip and thereby provide a resistive circuit connection analogous to the wiper of a potentiometer.
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Brunjes Thomas H.
Riley Richard E.
Bennett G. Bradley
Cuchlinski Jr. William A.
Spectrol Electronics Corp.
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