CONTROL SYSTEM COMPONENTS

TERM TEST SYLLABUS

Course Outcome:

CO-1: Identify pneumatic and hydraulic circuits . Design different application based  pneumatic circuits. Also differentiate various control systems

CO-2: Demonstrate the knowledge of different transmitters and their application

Syllabus:

Pneumatic System:

Introduction to Process and Control system. Pneumatic System Components: ISA symbols, Instrument Air and Plant Air, Air supply system and its components, Air compressors, Pressure regulation devices, air dryers, Directional control valves and special types of pneumatic valve such as Pilot-operated valves, Non-return valves, Flow control valves, Sequence valves, and Time delay valve, Linear actuators-Single-acting, Double-acting, and special type of double-acting cylinder, Rotary actuators- Air motors. Process Control Pneumatics: Volume boosters, Air relays, Pneumatic transmitter, Pneumatic logic gates, Pneumatic Circuits-Standard Symbols used for developing pneumatic circuits, Sequence diagram.

Hydraulic System:

Hydraulic System Components: Hydraulic pumps(centrifugal, gear , lobe), Pressure regulation method, Loading valves, Hydraulic valves, Hydraulic actuators (cylinder and motor),Speed control circuits for Hydraulic actuators, Selection and comparison of pneumatic, hydraulic and electric systems.

Transmitters:

Need, specifications and classification of transmitters, Need for Standardization of signals, concept of live zero and dead zero,2-wire; 3-wire and 4-wire transmitters and its calibration,Electronic versus pneumatic transmitters, Electronic type transmitters – temperature; Pressure (gauge); differential pressure; level(capacitive type); flow transmitter (magnetic);SMART /Intelligent transmitter; Block schematic and Comparison with conventional transmitter; applications of transmitters, Need for Converters and its calibration -Pneumatic to Electrical and Electrical to Pneumatic converters

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