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P& ID diagram and PID.

Created by: ALGUDKAR RAO at: 8/13/2013 7:33 PM (1 Replies)

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8/13/2013 7:33 PM	Rate (0)
ALGUDKAR RAO Posts: 621 Rating: (10)	hello all this is one simple question what is the relation between P&ID diagram and PID controller..? i was red in the manual there in P&ID diagram mean its instrumentaion diagram like mechanical equipment process valves control inputs and oututs etc rthen what is the roll of PID controller here..?
ALGUDKAR RAO Posts: 621 Rating: (10)
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8/13/2013 8:13 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 11/4/2024 Posts: 12293 Rating: (2690)	Hello Algudkar; There is no relationship between the two acronyms (although PID loops can appear on P&IDs). P&ID refers to a piping and instrumentation diagram, that shows the interconnection of instruments and plant equipment in order to control and direct a process. PID refers to a type of feedback loopcontrol algortihm (proportionnal, integral, derivative)used to program the functions of motors, valves, pumps... involved in reaching and maintaining a setpoint in a plant. Every PLC I know can implement a PID loop to control a level, a temperature, a motor speed... For a basic understanding of both, please refer to these Wikipedia pages: - P&ID: Piping and instrumentation diagram - Wikipedia, the free encyclopedia - PID: PID controller - Wikipedia, the free encyclopedia Hope this helps, Daniel Chartier
	Last edited by: dchartier at: 8/13/2013 8:53 PM
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