Capacitive sensing monitor and method therefore

A monitor for monitoring presence or absence of a liquid product in a system for pumping the liquid product from a supply through tubing. A capacitive sensor is coupled to the outside of the tubing at a sensing location having an inlet and an outlet, the capacitive sensor being responsive to the pre...

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Bibliographic Details
Main Authors BATCHER THOMAS J, HOLZMAN LOUIS M
Format Patent
LanguageEnglish
Published 24.02.2005
Edition7
Subjects
INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
MEASURING
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Summary:A monitor for monitoring presence or absence of a liquid product in a system for pumping the liquid product from a supply through tubing. A capacitive sensor is coupled to the outside of the tubing at a sensing location having an inlet and an outlet, the capacitive sensor being responsive to the presence or absence of the liquid product in the tubing. The tubing is selected from a material and having an inside diameter at the sensing location selected such that the tubing is substantially evacuated or substantially drains when the liquid product is substantially absent from the tubing preceding the sensing location but small enough so that the liquid product can be sensed by the capacitive sensor when the liquid product is substantially present in the supply.
Bibliography:Application Number: US20030644452