Patent ID: 6814872
Filing Date: 2004-11-09
Classification: B01J,C02F

Abstract:
A regeneration controller for water softener comprising:a water meter configured to output a signal indicative of the volume of influent water received by the water softener; a waxer-hardness indicator configured to output a signal indicative of a degree of hardness of the influent water, wherein the water-hardness indicator comprises an ion-selective electrode configured to measure degree of calcium ion concentration in the influent water; a processor coupled to receive the respective signals from the water meter and the water-hardness indicator, the processor being configured to compute a value indicative of the total level of hardness removed by the water softener; and a comparator coupled to receive a signal indicative of the capacity of the resin in the water softener, the comparator further configured to receive the value indicative of total hardness to issue a regeneration command based on comparing the resin capacity relative to the value of total hardness.