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Best HMI Graphic Display Level for a Distillation Column

The post Best HMI Graphic Display Level for a Distillation Column first appeared on the ISA Interchange blog site.

AutoQuiz is edited by Joel Don, ISA’s social media community manager.

Today’s automation industry quiz question comes from the ISA Certified Automation Professional certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional’s skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing information systems, systems integration, and operational consulting. Click this link for information about the CAP program. This question is from the CAP study guide, Performance Domain IV, Development. Definition: Software development and coding


The graphic display for a distillation column in a refining train would BEST fit in the HMI display hierarchy at which level?

a) plant
b) area
c) group
d) loop
e) none of the above


<span class="collapseomatic " id="id6892" tabindex="0" title="Click Here to Reveal the Answer” >Click Here to Reveal the Answer


A typical hierarchy is composed of displays at four levels:

Plant level – Provides information regarding the entire plant.

Area level – Provides information on portions of the plant equipment that have a working relationship.

Group level – Provides information for the control loops and data points relating to a single process unit within a plant area.

Loop level – Provides information that deals with individual control loops, sequences, or data points.

A distillation column refers to one piece of equipment in the distillation process that will contain several loops. Therefore, it falls into the group-level category.

The best answer is C, Group.




Source: ISA News