pH Control Explained | Closed-Loop Reagent Control in Water Treatment
This lesson explains how pH is measured and controlled in industrial processes. It shows how a pH sensor, controller, setpoint, and control valve work together in a closed-loop system, then uses a water-treatment example to show how carbon dioxide reagent is applied to maintain lime-softened water near a target pH. A strong fit for process control, analytical instrumentation, and wastewater-treatment learners.