In the context of the S88 (ISA-88) batch process control standard, three key models are used to describe and define the components and behavior of a batch process: the Process Model, Physical Model, and Procedural Control Model. Process Model: The Process Model represents the overall structure and hierarchy of the batch process. It defines the various units and their relationships within the process. The Process Model provides a high-level view of the process, identifying the major process equipment and the flow of materials and information between them. It helps in understanding the overall process flow and the interactions between different units. Physical Model: The Physical Model represents the physical components of the batch process, including the equipment, devices, and instruments involved. It defines the physical attributes and characteristics of each unit, such as its physical location, connections, and properties. The Physical Model provides a detailed representation o...
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