Sequence of the PID process flow diagram
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Hello, teachers. I would like to ask whether it is possible to represent two sequential processing steps for a device on a single PID diagram? For example, in a mixing tank, solid sodium hydroxide is first added and mixed with water for injection to form a sodium hydroxide solution; after thorough mixing, solid aluminum oxide is then added to the same tank and mixed again. Can this process be illustrated in a single diagram? Or can a PID diagram only represent one process flow, and processes that have a sequential order must be shown in separate diagrams? Thank you for the guidance~
It’s not two separate processes; one diagram is sufficient. All materials need to be included, and the steps should be outlined in the process description.
Hello! A PID diagram can show two sequential process flows on a single device. A PID diagram can be used to represent and describe the control logic and processes of a system or device, including multiple process steps. In the situation you mentioned, it is possible to show on a PID diagram, in stages, the process of adding solid sodium hydroxide to water for injection to prepare a sodium hydroxide solution, as well as the process of adding solid aluminum oxide and stirring it evenly. On a PID diagram, different symbols and connecting lines can be used to represent various processes. You can create multiple frames and use different colors or identifiers to distinguish between various process steps, and use arrows or lines to indicate the sequence. This allows the sequential process flow to be clearly expressed. Of course, if it’s not possible to fully represent the processes of two different manufacturing procedures within the same diagram frame, you can place them in separate frames or use different diagram sizes to depict them. It depends on the message you want to convey and the readability of the graphics. In short, PID diagrams are highly flexible and can be used to represent and describe the sequence of multiple process flows as needed. I hope this can be helpful to you. If you have any other questions, feel free to ask. Thank you! .
Okay, I understand. Thank you for the answer! ! !
Wow, that’s so detailed! Thank you for the answer! ! !
You’re welcome! If you have any other questions, feel free to ask me at any time. Wish you success in your work! .