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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Monday, April 21, 2008 04:18 AM

Water Level Monitors
 

Electrodeless Water Level Monitor
This system operates much like a classic float switch but without any moving parts.  The illustration shows how a system using two copper coils sealed inside a plastic pipe, can detect the level of water outside the pipe.  Whenever the water level is lower than the upper coil, no signal is coupled between the coils.  Once calibrated, this technique might also work on the outside of a plastic water tank.

Click on Drawing Below to view PDF version of Schematic

Electrodeless Water Level Monitor Circuit designed by Dave Johnson, P.E. (June 30, 2006)

Water Level Monitors
Master Schematic Category List - David A. Johnson, P.E.
 

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