Describe Process Control Modes and Process Control Technology
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Total Pages: 65
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Prerequisite
Basic Instrumentation and Process Control Strategies
Training Objectives
Upon completion of this process control training kit, you will be able to:
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Describe feedback control modes and their effect on process response
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Describe the applications of feedback control modes
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Describe the role of operations personnel in tuning controllers
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Describe the purpose and importance of automatic and manual process control
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Describe the features of pneumatic, electronic, and computer-based single control loops
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Describe the role of operations personnel in monitoring single control loops
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Describe the purpose and importance of plantwide control
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Describe the role of operations personnel in monitoring plantwide process operations
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Table of Contents
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1
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Introduction
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1
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2
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Feedback Control Modes
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3
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2.1 Proportional Mode
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4
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2.2 Integral (Reset) Mode
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9
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2.3 Derivative (Rate) Mode
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12
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2.4 Feedback Controller Mode Applications
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15
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2.5 Feedback Controller Tuning
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16
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3
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Manual and Automatic Process Control
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19
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3.1 Automatic Control
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21
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3.2 Manual Control
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22
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4
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Control Loop Evolution: Pneumatics to Computers
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23
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4.1 Pneumatic Feedback Control Loops
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24
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4.2 Electronic Feedback Control Loops
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26
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4.3 Microprocessor-Based Controllers
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27
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4.4 Typical Feedback Controller Features
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29
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5
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Operating Personnel: Monitoring Single Loop Operation
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30
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6
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Plantwide Control Evolution
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31
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6.1 Plantwide Control Before the Computer
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33
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6.2 Centralized Control
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34
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6.3 Early Distributed Control
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34
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6.4 Modern Distributed Control: Fieldbus Systems
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38
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7
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Operating Personnel: Monitoring Plantwide Operations
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40
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8
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Self-Check
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42
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9
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Self-Check Answers
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48
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