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PLC drafting symbols and notes 1

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OrangeBob70

OrangeBob70

Mechanical
Feb 19, 2015
1
In a P&ID drawing, the notation "PPCS" is located in the right bottom of a PLC symbol with the connection from an air eliminator on a pump. What does this indicate?
 
Is it Plant Process Computer System? Do you have the P&ID image to show?
 
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