Industrial Electronic Department BASIC ELEMENTS Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department OBJECTIVES: By the end of this chapter, you should:- Understand more fully the role and functioning of the basic instruments in closed loop control system. Be able to define and give an example Measuring Element Control Element Final Control Element Data Presentation Element Process Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
CLOSED LOOP CONTROL SYSTEM Industrial Electronic Department CONTROLLER z Set Point CONTROL LAW FCE PROCESS x w e y MEASURING ELEMENT Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department PROCESS PROCESS x Definition: Physical or chemical change of matter or conversion of energy Example: change in Pressure Flow Level Temperature Speed Electrical Potential etc Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department MEASURING ELEMENT MEASURING ELEMENT Definition: Consist of a sensor and transmitter. Example: Temperature: Thermocouple, Resistance Temperature Detector (RTD) Pressure: Manometer, Bourdon tube, Diaphragm, Bellows Flow: Orifice Plate, Venturimeter, Pilot Tube, Rotameter, Thermal Flow Meter, Mass Flow Meter, Turbine Flow Meter Level: Differential Floats, Pressure Cells (DP Cells), Radar level Gauge, Ultrasonic meters, capacitance and conductance type meters Quality: Gas Chromatograph, PH Analyzers Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department MEASURING ELEMENT Temperature Transmitter 4-20 mA Vibration Transmitter Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department MEASURING ELEMENT TRANSMITTER Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department MEASURING ELEMENT TRANSMITTER Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Temperature Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Temperature Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Level Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Level Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Flow Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Flow Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Typical Sensors for Pressure Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department CONTROLLER Set Point CONTROL LAW w e y x Definition: A device which operates automatically to regulate a controlled variable. Compares the CV & SP, and generates a process error signal. Generates a control action according to the specified control algorithm (PID) Example: PID Controller, PLC, etc. Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department CONTROLLER Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department FINAL CONTROL ELEMENT FCE Definition: The controlling element which directly changes the value of the manipulated variable. Example: Globe Valve Butterfly Valve Slider Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
Industrial Electronic Department FINAL CONTROL ELEMENT VALVE Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved
DATA PRESENTATION ELEMENT Industrial Electronic Department Example: Recorder Oscilloscope RECORDER Industrial Electronic Department Copyright of German Malaysian Institute. All rights reserved