June 5, 2014 - Vegetronix, Inc. makers of soil moisture sensors have developed a new water level sensor with no moving parts. The AquaPlumb series of liquid level sensor measure liquid level in tanks, reservoirs, and in the environment, without any moving parts. The sensing probe element consists of a special wire cable which is capable of accurately sensing the surface level of nearly any fluid, including water, salt water, and oils. The sensor element is electrically insulated and isolated from the liquid into which it is inserted, and will not corrode over time. Unlike, other sensors, the measurement range is adjustable from a few centimeters to over several meters.
Details of this project can be found at AquaPlumb.