PCT 134 - Process Technology - Instrumentation

• Pressure Variables, Elements, and Instrumentation
• Temperature Variables, Elements, and Instruments
• Level Variables, Elements, and Instruments
• Flow Variables, Elements, and Instruments
• Analytical Variables, Elements, and Instruments
• Measurement Devices
• Control Loop Theory
• Controllers
• Sensors, Transmitters, Transducers
• Instrument Air Systems
• Control Valves and Final Control Elements
• Interlocks
• Process Diagrams and Sketching
• Monitoring Variables
• Instrumentation Troubleshooting
• Flares
• Process Diagrams

• Safety Glasses
• Volt-Ohm (VOM) Meter
• Calculator-(TI-30xa preferred)

1. Using knowledge of symbols, process diagrams and instrumentation, sketch a simple process diagram, including control loops.
2. Describe the various process variables (flow, level, pressure, temperature, analytical, etc.) found in a plant.
3. Explain how instruments are used to sense, measure, and transmit this information to the control system.
4. Identify the types of control loops (simple and complex) and explain their operation.
5. Identify the components of a closed control loop (primary element, transmitter, controller, transducer, final element) and their interrelationships.
6. Explain typical instrument malfunctions found in control loops and how they may affect a process (cause and effect).

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