Automatic salt level monitor for a water softening device

摘要

The present invention provides an automatic monitor for use in a tank with a water soluble softening agent. The monitor includes a signal emitter that produces a signal capable of being detected by an array of signal-detecting sensors. The sensors are displaced generally vertically in the brine tank from the minimum depth of the softening agent to the maximum depth of the softening agent. An output is produced in response to said signal. The monitor also includes an electronic device for receiving and interpreting the output and determining if a low softening agent condition is present as the supply of the softening agent is depleted. An indicator warns when a low softening agent condition is present. Preferably, the sensors are linearly spaced within the tank.