Microcomputer controlled demand/scheduled water softener

Details Microcomputer controlled demand/scheduled water softener Microcomputer controlled demand/scheduled water softener

1983-07-08

1984-12-25

Cintins, Ivars C.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 98, 210140, 210143, 364502, B01J 4900

Patent

active

044902492

ABSTRACT:
An improved control for a resin bed water softener includes a microcomputer which is supplied with input data from a flowmeter indicative of the quantity of soft water leaving the softener. In accordance with the flow data, the microcomputer determines the amount of water used since the last regeneration and also determines the average daily soft water consumption. The microcomputer also coupled to a data input device and receives input data indicative of the total resin bed treating capacity and the incoming water hardness. At a prescribed hour each day, the microcomputer determines the remaining water softener resin bed treating capacity as calculated from the water hardness, the total resin bed treating capacity and the amount of water used since the last regeneration. The remaining resin bed treating capacity is compared to the reserve established as a proportion of the average daily consumption of soft water and regeneration is initiated when the reserve is greater than the remaining resin bed treating capacity.

REFERENCES:
patent: 4237538 (1980-12-01), Le Dall
patent: 4257887 (1981-03-01), Rak et al.
patent: 4275448 (1981-06-01), Le Dall
patent: 4332678 (1982-06-01), Spiegl
patent: 4385357 (1983-05-01), Davis et al.
Operating Manual, "Compute-A-Save System", Water Refining Company, Middletown, Ohio, Jul. 1, 1978.
Sales Literature, "Water King", Sta-Rite Industries, Delafield, Wisc.
Sales Literature, "The Lindsay KNOW-IT-ALL", The Lindsay Corporation.

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