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) are mixed together: Determine the effect on the control system’s...
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Practical Process Control System Questions & Answers – 9
In this process, maple syrup is heated as it passes through a steam heat exchanger, then enters an evaporator where the water boils off. The purpose of this is to...
Practical Process Control System Questions & Answers – 8
In this process, two chemical streams are mixed together in a reactor vessel. The ensuing chemical reaction is exothermic (heat-producing) and must be cooled by a water cooling system to...
Practical Process Control System Questions & Answers – 7
There is a problem somewhere in this liquid flow control system. The controller is in automatic mode, with a setpoint of 65%, yet the flow indicator and the flow controller...
Practical Process Control System Questions & Answers – 6
This water filter level control system uses an ultrasonic level transmitter to sense the level of water in the filter, and a controller to drive a motor-actuated valve introducing raw...
Practical Process Control System Questions & Answers – 5
In this process, two chemical streams are mixed together in a reactor vessel. The ensuing chemical reaction is exothermic (heat-producing) and must be cooled by a water cooling system to...
Practical Process Control System Questions & Answers – 4
Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value. The reactor’s source of heat is a steam “jacket” where...
Practical Process Control System Questions & Answers – 3
Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value. The reactor’s source of heat is a steam “jacket” where...
Practical Process Control System Questions & Answers – 2
On the job, you are sent to troubleshoot a brand-new control system, consisting of a pneumatic liquid level transmitter connected to a pneumatic controller, which in turn drives a pneumatic...
Practical Process Control System Questions & Answers – 1
Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value. The reactor’s source of heat is a steam “jacket” where...