Instrument control chart
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What are the differences between control charts and process flows?
An instrument control chart is a graph that displays instrument monitoring data and control parameters, reflecting the operating status of the equipment； A process flow diagram shows the transformation, flow, and processing steps of raw materials throughout the production process, focusing on the sequence and relationships between these steps. .
The patent holder purchases the process package, uses it to create a PFD (Process Flow Diagram), then adds control elements to generate a PCD (Process Control Diagram), and finally creates a P&ID (Process and Instrumentation Diagram). PFD is a pure process diagram, that is, a flow chart of the process ； PCD is the addition of a monitoring schematic diagram on the process flow diagram (if necessary) ； The P&ID diagram is the final engineering implementation diagram.