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PI/PID

PI/PID

(OP)
WHEN regulating the level in a scrubber(control valve after the pump) should we use PI or PID?
NB
scrubber--> pumps(export condensate)--> control valve  

RE: PI/PID

Generally Propertional + Integral accommodates most control applications.  Derivative is mostly used for slow loops such as temperature on the outlet tubes from a furnace controlling the fuel gas to the furnace.  P+I is fine for most level applications.

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