Transcription of INSTRUMENTATION AND CONTROL Module 7 Process Controls
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Department of EnergyFundamentals HandbookINSTRUMENTATION AND CONTROLM odule 7 Process ControlsblankProcess ControlsTABLE OF CONTENTSTABLE OF CONTENTSLIST OF ivLIST OF OF CONTROL 2 Automatic CONTROL 4 Functions of Automatic 4 Elements of Automatic 4 Feedback 6 CONTROL LOOP 7 Feedback CONTROL System Block 9 Process Time 13 Stability of Automatic CONTROL 16 TWO POSITION CONTROL 17 Two Position 18 Example of Two Position 19 Modes of Automatic 21 PROPORTIONAL CONTROL 22 CONTROL 22 Proportional 22 Example of a Proportional Process CONTROL 27 Rev. 0 Page iIC-07 TABLE OF CONTENTSP rocess ControlsTABLE OF CONTENTS (Cont.)
Automatic control systems neither replace nor relieve the operator of the responsibility for maintaining the facility. The operation of the control systems is periodically checked to verify proper operation. If a control system fails, the operator must be able to take over and control the process manually.
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