What is the Difference between E/P Positioner and I/P
positioner in a control valve? In which applications the
respective positioners are used in?
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Answer Posted / nabeel
I/P transducer or positioner functions for "Current(I) to
Pneumatic(P)" signal converter. It converts "4-20mA of
Current signal" to "3-15psig pneumatic signal".
Whereas, E/P positioner functions for "Voltage
(electromotive force = E) to Pneumatic (P)" signal
converter. It converts "1-5V of voltage signal" to "3-
15psig" of pneumatic signal.
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