The example process loop sheet in Figure 4 shows that the influent flow meter sends a 4–20 mA signal via analog output to all devices throughout the diagram. In addition to providing a flow rate ...

To analyze feedback loops and delays in stock and flow diagrams, you need to use techniques such as loop dominance analysis, behavior over time graphs, and sensitivity analysis.

The loop filter function is to eliminate (or at least reduce) visually objectionable artifacts associated with the semi-independence of the coding of super blocks and their constituent sub-blocks as ...