Lecture 2 Control Instrumentation 1.P&ID, PFD 2.Control Hardware Elements 1.Sensor / Transducer 1.Actuator 2.Controller -Do I have confident feeling of.

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Presentation transcript:

Lecture 2 Control Instrumentation 1.P&ID, PFD 2.Control Hardware Elements 1.Sensor / Transducer 1.Actuator 2.Controller -Do I have confident feeling of understanding practical control elements? Chem. Eng. Process Control Chemical Engineering Process Control © Il Moon

1. P&ID, PFD Chem. Eng. Process Control 1

Chem. Eng. Process Control 2

2. Control Hardware Elements (Marlin) Process Sensor / Transducer Chem. Eng. Process Control 3

3. Sensor / Transducer (SEM) Chem. Eng. Process Control 4

4. Actuator * Valve characteristics - flow rate - flow characteristics Linear : Quick opening : Equal percentage : Chem. Eng. Process Control 5 (SEM)

5. Controller Controller PV SP CO Chem. Eng. Process Control 6 Sensor / Transmitter Controller Ty T y

Chem. Eng. Process Control 7 1. Sensor - Temperature : thermocouples, RTD, bimetal, pyrometer - Pressure : manometer, bellows, diaphragm, strain gauges - Flow : orifice, venturi, turbine, ultrasound - Liquid Level : float, displacer, conductivity, head pressure - Composition : GC, IR, UV, conductivity meter, potentiometry, pH, spectrometer 2. Controller - PID, DDC 3. Actuator - valve, pump, motor 4. Transmitter 4~20mA, 3~15psig Summary