You can find the top 10 objective questions and answers on Process Control Automation PLC. A quiz also available at…
You can find the top 10 objective questions and answers on distributed control system (DCS). A quiz also available at…
PLC or DCS System ? The following steps discuss about How to choose PLC or DCS systems ? Step 1: Does…
Earthing creates an alternative path for flow of excessive currents safely into the ground in presence of minimal resistance or…
A very useful technique for testing process control loop response is to subject it to a “step-change” in controller output.…
A level control loop is supposed to maintain a constant level of liquid at the bottom of the stripping tower where…
An operator reports a high level alarm (LAH-12) displayed at the control room for the last 13 hours of operation,…
The compressor emergency shutdown system (ESD) has tripped the natural gas compressor off-line three times in the past 24 hours.…
A liquid flow control loop consisting of a flow transmitter (FT) to sense liquid flow rate through the pipe and…
Instrumentation maintenance engineer often hears about process value mismatch from field transmitter display reading and control room DCS/PLC reading. Generally…
