Instrumentation Engineering Question:
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What are the key components of control loop?

Answers:

A closed control loop in a very basic manner consists of
sensor, transmitter, controller,signal converters and final
control elements.Actually in a practical loop there will be
many other instruments apart from this to support the
working of above mentioned instruments.

The control loop main key components is sensor,controller & final control element

sensor mean level transmitter,RTD,flow meter,pressure transmitter,pressure switches

final control element mean control valves, pumps vent valves

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