Concentration monitor method
First Claim
1. A method comprising:
- storing a plurality of predetermined algorithms, each predetermined algorithm associated with one of a plurality of product classifications;
receiving a selection of one of a plurality of use solutions, each of the plurality of use solutions associated with one of the plurality of product classifications;
measuring a resistivity of the use solution corresponding to the selected one of the plurality of use solutions;
measuring a temperature of the use solution corresponding to the selected one of the plurality of use solutions; and
calculating a concentration of a chemical product in the use solution based upon the resistivity, the temperature and one of the plurality of the predetermined algorithms associated with a product classification of the product in the selected use solution.
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Abstract
A concentration monitor for monitoring a concentration of a plurality of use solutions, each of the plurality of use solutions being, at least, a concentrate in a diluent, each of the plurality of use solutions having a resistivity which varies as a function of both temperature and an amount of the concentrate contained in a given amount of the diluent. A resistivity probe is adapted for use with at least one of the plurality of use solutions for taking a measurement related to the resistivity of the at least one of the plurality of use solutions. A temperature sensor is adapted for use with the at least one of the plurality of use solutions for taking a measurement related to the temperature of the at least one of the plurality of use solutions. A controller calculates the concentration of the at least one of the plurality of the use solutions based upon a predetermined algorithm using the resistivity and the temperature for the particular one of the at least one of the plurality of use solutions, the algorithm being based upon knowledge of the at least one of the plurality of use solutions being measured.
20 Citations
18 Claims
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1. A method comprising:
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storing a plurality of predetermined algorithms, each predetermined algorithm associated with one of a plurality of product classifications; receiving a selection of one of a plurality of use solutions, each of the plurality of use solutions associated with one of the plurality of product classifications; measuring a resistivity of the use solution corresponding to the selected one of the plurality of use solutions; measuring a temperature of the use solution corresponding to the selected one of the plurality of use solutions; and calculating a concentration of a chemical product in the use solution based upon the resistivity, the temperature and one of the plurality of the predetermined algorithms associated with a product classification of the product in the selected use solution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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storing a plurality of predetermined algorithms, each predetermined algorithm expressing a calculated concentration of a chemical product as a function of a measured conductivity and a measured temperature for one of a plurality of product classifications; receiving a user-selection concerning one of a plurality of use solutions to be measured, each of the plurality of use solutions associated with one of the plurality of product classifications; identifying one of the plurality of predetermined algorithms based on the user-selection; measuring a resistivity of a use solution corresponding to the user-selection; measuring a temperature of the use solution corresponding to the user-selection; and calculating a concentration of a chemical product in the use solution based upon the measured resistivity, the measured temperature and the identified one of the plurality of predetermined algorithms.
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Specification