The Real-Time pH Process Modeling and Control Simulation Software is built in National Instruments' LabVIEW platform and includes pH process diagram, a strong-acid-strong-base pH model, a weak-acid-strong-base pH model, a strong-acid-weak-base pH model, a weak-acid-weak-base pH model, MFA control simulation for the four pH processes using an MFA pH controller, PID control simulation for the four pH processes, On-Off control simulation for the four pH processes, graphical interface with control faceplates and real-time trends, LabVIEW diagrams, and pH process model description, MFA controllers used, and recommended control strategy. The pH process models are delivered as VIs (virtual instruments) in LabVIEW. The user can design and test a pH control systems using the pH process models running in real-time. For instance, a pH process model can run in a PC with real-time interface to a popular pH controller on the market or to an existing pH controller in service. The control results can be compared with the MFA pH control results obtained in MFA control simulations. The user can then take the results, estimate the chemical reagent savings, and show the potential return on investment when applying for budget to buy the proper pH controller or control software to improve pH control performance.
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