process control and instrumentation questions and answers Archives

Practical Process Control System Questions & Answers – 10

Examine this P&ID for a level control system in a vessel where two different fluids (Feed A and Feed B)

In this process, maple syrup is heated as it passes through a steam heat exchanger, then enters an evaporator where

In this process, two chemical streams are mixed together in a reactor vessel. The ensuing chemical reaction is exothermic (heat-producing)

There is a problem somewhere in this liquid flow control system. The controller is in automatic mode, with a setpoint

This water filter level control system uses an ultrasonic level transmitter to sense the level of water in the filter,

In this process, two chemical streams are mixed together in a reactor vessel. The ensuing chemical reaction is exothermic (heat-producing)

Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value.

Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value.

On the job, you are sent to troubleshoot a brand-new control system, consisting of a pneumatic liquid level transmitter connected

Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value.