ControlMaster CM30, CM50, CMF310 pH Dosing in Effluent Discharge Application Guide

This technical document explains the use of ABB’s ControlMaster CM30, CM50, and CMF310 universal process controllers for pH dosing in effluent water discharge, focusing on the challenges of deadtime in chemical reactions. It details how the controller’s Predictive PI (Smith Predictor) algorithm compensates for process deadtime, simplifying tuning to just three parameters for improved control.