Method and apparatus for capacitively determining the...

Measuring and testing – Liquid level or depth gauge – Immersible electrode type

Reexamination Certificate

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C073S29000R, C073S864010

Reexamination Certificate

active

07150190

ABSTRACT:
A liquid level sensor confirms actual physical contact between a probe and a liquid by verifying that any change in capacitance of the sensor is constant over a given time period and thereby is not caused by spurious electrical disturbances or other measuring irregularities.

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