| 摘要 |
A system and method to determine a salt level within a brine tank. In one form a tube is disposed vertically within a brine tank and includes an interior portion between an open bottom end and a closed upper end. When water level in the tank rises above the bottom of the tube, a pressure detector detects an increase in air pressure within the tube. The pressure detector can take the form of a pressure switch. The switch may be in a normally open condition when the water level is below the bottom of the tube and is closed when the water is above the bottom of the tube. A device can be used to indicate a "Low Salt" or "Call for Service" condition depending on the sequence of the pressure detector during a regeneration cycle.
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