Methods for controlling the concentration of detergents

Details Methods for controlling the concentration of detergents Methods for controlling the concentration of detergents

1993-01-12

1994-12-06

Dean, Richard O.

Cleaning and liquid contact with solids

Processes

Combined

134 252, B08B 704

Patent

active

053707435

ABSTRACT:
Methods and apparatus for automatically controlling the concentration of a detergent in a cleaning solution determine the electrical conductivity Y of a cleaning solution 2 with a sensor 4, convert the electrical conductivity Y into the detergent concentration X using equation Y=aX+b (wherein Y=electrical conductivity of the cleaning solution, X=concentration of the detergent, a=inherent factor of the detergent, and b=electrical conductivity of the solvent), compare the converted detergent concentration with a preset value given in terms of detergent concentration, and actuate concentration controlling means according to the result of comparison.

REFERENCES:
patent: 3013572 (1961-12-01), Lahti et al.
patent: 4121767 (1978-10-01), Jensen
patent: 4648043 (1987-03-01), O'Leary
patent: 4733798 (1988-03-01), Brady et al.
patent: 4867193 (1989-09-01), Hayashi et al.

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