Basic Process Controls

Hard-Wired Relays

These controls feature hard-wired push-buttons, relays, interlocks, timers and load meters. They can be installed in the door of the Dupps-built Motor Control Center or their own Push-Button Console. The operator makes all adjustments to control throughput and product quality.

Basic PID Loops

You can add this standard four-loop control system to the system above. It has individual PID controllers to monitor and control cooker temperature, raw material feed rate, cooker level, vapor pressure, cooked material discharge rate, and steam flow.

The first loop compares a weighted average of temperatures in the cooker's discharge end and middle with the set point or desired discharge temperature. It varies the speed of the feed to the cooker for precise temperature control.