Unit 1968: Process Control and Instrumentation

1. Introduction to Process Control and Instrumentation

• Definition of process control
• Importance in industries (chemical, manufacturing, oil & gas, pharmaceuticals)
• Role of instrumentation in monitoring and regulation
• Overview of process variables (temperature, pressure, flow, level)

2. Control Systems and Feedback Loops

• Types of control systems
  • Open-loop systems: characteristics and examples
  • Closed-loop systems: characteristics and benefits
• Feedback loops
  • Definition and importance
  • Components of feedback control: sensor, controller, actuator
  • Stability and efficiency in processes

3. Sensors and Transducers

• Definition and difference between sensors and transducers
• Types of sensors by measured variable
  • Temperature sensors
  • Pressure sensors
  • Flow sensors
  • Level sensors
• Principles of operation
  • Electrical, mechanical, thermal, optical principles
• Applications in process control

4. Control Valves and Final Control Elements

• Definition and role as final control elements
• Types of control valves
  • Globe valves
  • Ball valves
  • Butterfly valves
  • Diaphragm valves
• Valve characteristics
  • Linear, equal percentage, quick opening
• Selection criteria
  • Process requirements, fluid properties, operating conditions
• Importance in regulating fluid flow

5. Process Control Strategies

• Overview of control strategies
• Proportional-Integral-Derivative (PID) control
  • Components and tuning
  • Applications and examples
• Feedforward control
  • Principle and benefits
• Cascade control
  • Concept and implementation
• Comparison of strategies and appropriate use cases

6. Instrumentation for Temperature Measurement

• Temperature measurement importance
• Instruments and techniques
  • Thermocouples: types, working principle, advantages
  • Resistance Temperature Detectors (RTDs): types, operation
  • Thermistors: characteristics and applications
  • Infrared sensors: non-contact measurement
• Calibration and maintenance

7. Instrumentation for Pressure Measurement

• Pressure measurement fundamentals
• Devices
  • Pressure gauges: bourdon tube, diaphragm, capsule
  • Pressure transmitters: operation and types
  • Pressure switches: use in control systems
• Application examples in industry

8. Instrumentation for Flow Measurement

• Importance of flow measurement
• Techniques and instruments
  • Flow meters: electromagnetic, turbine, positive displacement
  • Orifice plates: principle and installation
  • Ultrasonic flow meters: operation and advantages
• Selection considerations

9. Safety Instrumented Systems (SIS)

• Definition and purpose
• Importance in accident prevention
• Components of SIS
  • Sensors, logic solvers, final control elements
• Design principles
  • Safety Integrity Level (SIL)
  • Redundancy and fail-safe design
• Implementation and maintenance best practices

10. Control Room Operations and Human-Machine Interface (HMI)

• Role of control room operators
• Design principles of HMIs
  • Usability and ergonomics
  • Display types and controls
• Effective communication and decision-making
• Case studies of control room operations