Process Flow Diagram Conventions

Unless you have specialized knowledge and your diagram is being developed for a peer group with similar knowledge it s best to stick to basic flowchart symbols. A mechanical or electrical drive is typically connected to a pump that is used to compress the medium. The flowchart shows the steps as boxes of various kinds and their order by connecting the boxes with arrows.

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A flowchart is a type of diagram that represents a workflow or process a flowchart can also be defined as a diagrammatic representation of an algorithm a step by step approach to solving a task.

Process flow diagram conventions. Process flow diagram symbols equipment pumps and tanks come in a variety of designs and shapes. The process flow diagram is divided into three sections. The need for multiple data flow by a process is represented by a between the data flows. Some conventions used when drawing dfd s should be explained.

Like other types of diagrams they help visualize what is going on and thereby help understand a process and perhaps also find flaws bottlenecks and other less obvious features within it. Compressor is a mechanical device that takes in a medium and compresses it to a smaller volume. Assuming the example dfd explained earlier all external files such as employee record company record and tax rates are shown as a one side open rectangle. It conveys a process and the path of its individual components therefore it is essential to learn how to read and create one.

Flow chart symbols flow chart. Most of the flowchart symbols shown here are for use in very specific applications such as a data flow diagram used for computer programming. The process flow diagram is an essential part of chemical engineering. Flowcharts are used in designing and documenting simple processes or programs.

Process topology stream information and equipment information.