초록 ▼

An automatic dispenser for dispensing solid chemicals used in cleaning processes which includes (i) means for initiating dispensing of a concentrated chemical solution, (ii) means for forming a concentrated chemical solution, (iii) means for directing the concentrated chemical solution to its utiliz

An automatic dispenser for dispensing solid chemicals used in cleaning processes which includes (i) means for initiating dispensing of a concentrated chemical solution, (ii) means for forming a concentrated chemical solution, (iii) means for directing the concentrated chemical solution to its utilization point, (iv) means for measuring the conductivity and temperature of the concentrated chemical solution dispensed, (v) means for calculating the amount of chemical dispensed based upon the conductivity and temperature of the concentrated chemical solution dispensed, and (vi) means for terminating formation of the concentrated chemical solution when a predetermined amount of chemical has been dispensed.

대표청구항 ▼

A method for dispensing a predetermined quantity of a chemical in a solution of unknown or variable concentration into a utilization vehicle, the solution having a level of conductivity, comprising the steps of: (a) dispensing the chemical solution into the utilization vehicle at a known constant ra

A method for dispensing a predetermined quantity of a chemical in a solution of unknown or variable concentration into a utilization vehicle, the solution having a level of conductivity, comprising the steps of: (a) dispensing the chemical solution into the utilization vehicle at a known constant rate of flow; (b) measuring the conductivity of the solution as the solution flows into the utilization vehicle; (c) calculating the amount of chemical dispensed into the utilization vehicle by: (i) calculating a periodic amount of chemical dispensed into the utilization vehicle after a predetermined time interval based upon the constant solution flow rate, the length of the time interval and the conductivity of the solution; and (ii) summing the periodic amounts to obtain a total amount of chemical dispensed and comparing the total amount to a predetermined amount of chemical to be dispensed; (d) periodically repeating steps (b) and (c); and (e) terminating flow of the solution into the utilization vehicle when said predetermined amount of chemical has been dispensed into the utilization vehicle.