Water treatment control systems and methods of use

A method of controlling addition of an oxidizing compound to a water treatment system comprising:

• specifying a first set point representing a first desired operating condition of the water treatment system;
• specifying a second set point and a tolerance representing a second desired operating condition of the water treatment system;
• generating a first input signal corresponding to a first operating parameter of the water treatment system;
• generating a second input signal corresponding to a second operating parameter of the water treatment system;
• generating a first output signal based on a difference between the first input signal and the first set point when a difference between the second input signal and the second set point is less than the tolerance;
• and
• generating a second output signal based on the first input signal and a second set point when the difference between the second input signal and the second set point is greater than the tolerance.

A method of controlling addition of a compound to a water treatment system comprising:

• specifying a primary set point representing an operating condition of the water treatment system;
• measuring a primary operating parameter and a secondary operating parameter of the water treatment system;
• generating a first output signal based on the primary operating parameter and the primary set point;
• identifying an alternate control mode when at least one condition selected from the group consisting of a low first operating parameter, a high first operating parameter, a low second operating parameter, and a high second operating parameter is present;
• and
• generating an alternate output signal based on at least one of the primary operating parameter and the secondary operating parameter when the alternate control mode is identified.

A water treatment system comprising:

• an input device disposed to measure an operating parameter of the water treatment system and generate a corresponding input signal;
• a controller disposed to receive and analyze the input signal and generate a first output signal, in a first control mode, based on a first difference between the input signal and a first set point value and a second output signal, in a second control mode, based on a second difference between the input signal and a second set point value;
• and
• an output device disposed to receive the first and second output signals and regulate addition of an agent to the water treatment system.

A water treatment system comprising:

• a first measurement device disposed to measure a first parameter of the water treatment system and generate a first input signal;
• a second measurement device disposed to measure a second parameter of the water treatment system and generate a second input signal;
• a controller disposed to receive and analyze the first input signal and the second input signal and generate a first output signal when a difference between the second input signal and a second set point value is less than a tolerance and generate a second output signal when the difference between the second input signal and the set point value is greater than the tolerance;
• and
• an output device disposed to receive at least one of the first and second output signals and regulate addition of an oxidizer to the water treatment system.

A water treatment system comprising:

• an ORP sensor disposed in the water treatment system;
• an amperometric sensor disposed in the water treatment system;
• a means for controlling addition of an oxidizing species to water in the water treatment system in response to a signal from at least one of the ORP sensor and the amperometric sensor;
• and
• a means for identifying and controlling addition of the oxidizing species in an alternate control mode in response to a signal from at least one of the ORP sensor and the amperometric sensor when at least one condition selected from the group consisting of a low first operating parameter, a high first operating parameter, a low second operating parameter, and a high second operating parameter is present.

A computer-readable medium having computer-readable signals stored thereon that define instructions that, as a result of being executed by a computer, instruct the computer to perform a method of controlling addition of an oxidizer compound to a water treatment system comprising acts of:

• receiving a first input signal from a first input device disposed to measure a first operating parameter of the water treatment system;
• receiving a second input signal from a second input device disposed to measure a second operating parameter of the water treatment system;
• generating a first output signal based on the first input signal and a first set point when a difference between the second input signal and the second set point value is less than a tolerance;
• and
• generating a second output signal based on the first input signal and a second set point when the difference between the second input signal and the second set point value is greater than the tolerance.