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Circuits designed by David Johnson, P.E.
Last Updated on: Thursday, November 30, 2017 07:42 AM

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More  Fluid Level Monitor

CAPACITANCE TYPE LIQUID LEVEL MONITOR


This circuit was originally designed to monitor the level of liquid natural gas in a tank but it can be used to also measure almost any liquid. Two custom insulated metal tubes form a capacitor plate. The capacitance between the two tubes increases as the level of the liquid rises. The circuit converts an increase of capacitance into a positive voltage change. The circuit could be changed to handle almost any scale factor needed.

Click on Drawing Below to view PDF version of Schematic

Circuit Liquid Fuel Gauge Capacitance Probe Circuit designed by David A. Johnson, P.E.


More  Fluid Level Monitor

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