Do you know what is open loop & close loop?

Submitted by: Muhammad
OPEN LOOP : This is nothing but to sense the process signals from the field and to send it to the control room for operator observation.
CLOSE LOOP : This is measuring the process signals for operator's action. Means Tx sense the process and send it to the control room. Where the operators takes action i.e. control action and that given to the final control element as per the process requirement.
Submitted by: Muhammad

Read Online Instrumentation Specialist Job Interview Questions And Answers