The Industrial Instrument Mechanic Level One course provides students the opportunity to advance their knowledge and skills acquired either through foundation trades training or from on the job experience. The course introduces students to the fundamentals of pressure measurement and its standards and calibration techniques. In addition, students are exposed to conventional panels and recorders, pneumatic relays and special mechanisms. Students study and service process regulators and a wide variety of control valves and actuators. Students will also undertake an in-depth study of basic electricity including a variety of circuits, switches, relays and solenoids. Students will be exposed to substantial hands-on exercises that will directly relate to the workplace. Upon entering the workforce they will be expected to function as a level one apprentice performing related tasks with structured supervision.
Credits: 0
Hours: 240 (Lecture Hours: 120, Laboratory Hours: 120)
Total Weeks: 8
Prerequisites:
Registered Apprentices with the Industry Training Authority or successful completion of Industrial Instrument Mechanic Foundation Trades Training program.
Non-Course Prerequisites:
None
Co-Requisites:
None
Course Content:
Safety
1. Safe work practices in the lab
Pressure and Measurement
1. SI, MKS and BGS measurement standards
2. Pressure measurements among all 3 standards
3. Pressure types, such as atmospheric, absolute, gauge and vacuum
4. Use of a manometer and dead weight testers as primary standards
5. Pressure gauges by type, class and application
6. Zero span and angularity errors
7. Gauges using primary standards
8. Gauge accessories such as pulsation dampers, chemical seals and pigtail siphons
9. Process applications of gauge accessories
10. Head effects on pressure and measurement
Instrument Air System
1. Instrument air supply systems including compressors, dryers and filters
2. Air distribution systems
3. Relative humidity and dew point for compressed air supply systems
ISA Symbols
1. Basic instrument symbols used on a loop sheet
2. Loop sheet for instrument air supply systems
Regulators
1. Relieving, non-relieving and pilot operated regulators
2. Appropriate applications for relieving and non-relieving regulators
3. Operation and application of various process regulators such as air, steam and natural gas
4. Process and air supply regulators
Panels & Recorders
1. Links and levers work
2. Receiver elements
3. Function of pressure measuring elements such as bellows, diaphragms and helical
4. Chart recorders to manufacturers’ specifications
Pneumatic Relays and Special Mechanisms
1. Recorder elements such as servo-mechanisms
2. Various types of pneumatic relays such as amplifying and balancing
3. Operation of a pneumatic relay
4. Set-up of a pneumatic relay
Tubing and Fittings
1. Tubing sizes and materials
2. Tube bending techniques
3. Tube and pipe fittings
Control Valves and Actuators
1. Control valves by actuator and body type
2. Process applications for various valves
3. Disassemble/inspect/reassemble/test control valves
4. Stroke control valves, accurate process operation
Positive Displacement Meters
1. Different types of positive displacement meters
Basic DC Electricity
1. AC/DC sources of electrical energy
2. Voltage, current, and resistance
3. Ohm’s Law
4. Operation and application of various batteries such as lead acid, NiCad, NiMh
5. Electrical current, voltage and resistance using both analog and digital multimeters
6. Currents, voltages and resistance in series, parallel and combination circuits using Ohm’s Law
7. Reference measurement to circuit common
8. Electrical power in watts in measuring circuits
9. Differences among resistors, potentiometers and rheostats
10. Application of resistors, potentiometers and rheostats
11. Correct size of wire and fuses to be used in electrical circuits
Industrial Switches
1. Switch contacts such as mercury and micro-switches
2. Pressure and differential pressure switches using appropriate test standards
3. Temperature, level and flow switches using appropriate test standards
Relays and Solenoids
1. Electrical relay types and rating for both AC and DC
2. Circuits using timers such as on-delay, off-delay, pneumatic and electronic
3. Control systems using 2-wire, 3-wire, and 4-wire solenoids
4. Solenoid ratings (automatic vs. semi-automatic)
Soldering
1. Types of solder
2. Soldering techniques by removing and installing components on a circuit board
3. Solder different types of wire splices
Control Ladders
1. Electrical symbols used in ladder drawings
2. Basic motor control circuits in ladder drawings
3. Motor sequencing in ladder drawings
4. Temperature control applications in ladder drawings
5. Process application, design a ladder logic drawing
6. Components and test the system to prove it meets the application
Filled Thermal Systems
1. Filled thermal systems used in temperature measurement such as alcohol filled, vapour filled, and mercury filled
2. Types and classes of filled thermal systems
3. Optimum location of temperature measuring elements
Learning Outcomes:
Upon completion of this course, students will be able to:
1. Identify common tubing and fittings
2. Demonstrate an ability to work with common tubing and fittings
3. Demonstrate an ability to work with penumatic systems and controls
4. Identify, repair, and calibrate simple process indicators and recorders
5. Describe measurement of pressure, temperature, flow and weight
6. Display a thorough appreciation of the operating processes and their interrelationship with instrumentation
7. Apply basic principles of DC electricity
8. Service control valves, positioners, differential pressure transmitters and signal and impulse tubing.
9. Service regulators, relief valves, and final control elements
Grading System: Percentage
Passing Grade: 70%
Percentage of Individual Work: 100
Text Books:
Textbooks are subject to change. Please contact the bookstore at your local campus for current book lists.