Continuous Process: Multiple Loop Control

Explain typical interactions between single control loops. Explain several types and applications of cascade control. Explain several types and applications of ratio control. Describe computational components that are typically used in multiple loop control. Explain how limiters interlocks override controls and selective controls are used. Explain the difference between feedback control and feed-forward control. Describe the advantages problems and applications of feed-forward control. Identify the main boiler control components and connections on a P&ID. Trace boiler control functionality.