The document discusses basic and premium PowerPoint presentations for instrumentation process and control education, providing essential instructional content and options for instructors. It covers topics in process control, including automation, control elements, control loops, and various control strategies. Key concepts such as static and dynamic characteristics, hysteresis, and different control strategies like on/off and proportional control are also presented.

1. © 2014 by American Technical Publishers
All rights reserved
Basic PowerPoint®
Presentations
Basic PowerPoint®
Presentations offer instructors a no-cost option for providing a brief
overview of content presented in Instrumentation Process and Control.
Premium PowerPoint®
Presentations allow instructors to minimize development time by
taking advantage of prepopulated instructional content including the following:
Premium PowerPoint®
Presentations can be purchased from atplearning.com as part of the Instructor
Resources or as a separate product.
To purchase Premium PowerPoint®
Presentations, visit atplearning.com
• Chapter Objectives
• Images of all Numbered Figures
• Instructor Notes
• Chapter Reviews

2. Basic PowerPoint®
Presentation
© 2014 by American Technical Publishers
All rights reserved
Chapter 2
Process Control • Variables • Automation • Control
Elements • Performance Characteristics • Control Loops •
Common Control Strategies • Instrument Calibration •
Instrument Management Software
Fundamentals of Process Control

3. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
Process automation refers
to processes involving
batch and continuous flow
of liquids, gases, and bulk
solids.

4. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
Factory automation refers
to processes usually
involving the piece flow of
product.

5. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
A process control system uses a primary element, a control
element, and a final element.

6. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
Static characteristics are
the characteristics of an
element that describe the
operation of the element at
steady-state conditions
when the process is not
changing.

7. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
Dynamic characteristics are the characteristics of an
element that describe the operation of the element at
unsteady-state conditions when the process is changing.

8. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
Hysteresis is the property
of a control element that
results in different
performance when a
measurement is increasing
than when the
measurement is
decreasing.

9. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
A control loop is a control system in which information is
transferred from a primary element to the controller, from
the controller to the final element, and from the final
element to the process.

10. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
ON/OFF control is a control strategy where a controller
activates or deactivates the final element depending on
whether the measured variable is above or below the
setpoint.

11. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
Proportional control is a
control strategy that uses
the difference between the
setpoint and the process
variable to determine a
control output that is sent
to a final element.

12. Chapter 2 — Fundamentals of Process Control
© 2014 by American Technical Publishers
All rights reserved
A time proportional
ON/OFF controller is a
control strategy that has a
predetermined output
period during which the
output contact is held
closed (or power is ON) for
a variable portion of the
output period.