Standard

 

ELC 211 – Process Control

Course Description:

Introduces industrial process control applications with an emphasis on sensors and signal conditioning.  Topics include:  symbology and drawing standards, control techniques, sensors and signal conditioning, and ISA and other relevant standards.

 

Competency Areas:

Hours:

 

 

 

Symbology and Drawing Standards

Class

4

Control Techniques

D. Lab

4

Sensors and Signal Conditioning

P. Lab/O.B.I.

0

ISA and Other Relevant Standards

Credit

6

 

 

Prerequisite:

ELC 120

Corequisite:

 

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D. Lab

P. Lab/

O.B.I.

SYMBOLOGY AND DRAWING STANDARDS

14

11

0

Switch symbols

Identify the basic switch symbols.

 

 

 

Relay symbols

Identify the basic relay symbols.

 

 

 

Solenoid symbol

Identify the solenoid symbol.

 

 

 

Miscellaneous symbols

Identify several special symbols.

 

 

 

Nema logic symbols

Draw and label the basic nema logic symbols.

 

 

 

Ladder logic diagrams

Draw a ladder logic diagram for single on-off motor control.

 

 

 
CONTROL TECHNIQUES

12

9

0

Open loop control

Draw block diagram and explain open loop control system operation.

 

 

 

Closed loop control

Draw block diagram and explain closed loop control system operation.

 

 

 

Basic control modes

Describe on-off control, proportional plus integral control, proportional plus derivative control, and proportional plus integral plus derivative control.

 

 

 

 

Describe electric synchro and pneumatic controls.

 

 

 

Final control elements

Describe the application of valves, solenoids, and motors as final control elements.

 

 

 
SENSORS AND SIGNAL CONDITIONING

10

10

0

Temperature transducers

Describe the theory of operation of each type of basic transducer.

 

 

 

Humidity transducers

 

 

 

 

Light transducers

Describe the use of op-amps and associated circuits to adjust the amplitude and wave shape of (transducer) sensor outputs.

 

 

 

Displacement stress and strain transducer

 

 

 

 

Magnetic transducer

 

 

 

 

Pressure transducer

 

 

 

 

Fluid flow transducer

 

 

 

 

Liquid flow transducer

 

 

 

 

Application of bridges

 

 

 

 

Amplitude and waveform conditioning

Make measurements using bridges and sensing devices.

 

 

 
ISA AND OTHER RELEVANT STANDARDS

4

10

0

ISA standards

Locate and use information on the Instrument Society of America standards.

 

 

 

Analog and digital signal transmission standards

Describe signal transmission standards such as RS232C and IEE 488 and others.

 

 

 

 

Suggested Resources

 

Books:

 

Owens.  (1994).  Multivariable process control systems.  Englewood Cliffs, NJ: Prentice Hall.

Patrick.  (1995).  Industrial process control systems.  Albany, NY: Delmar.

Polonyi, M. J.  (1991).  Power and process control systems.  New York: McGraw-Hill.

Shinskey, F. G.  (1996).  Process control systems: Application, design, and tuning.  New York: McGraw-Hill.