Lesson 1 - Introduction to Process Measurement
Measurement and display requirements; Remote and local display; Calibration; Noise; Response time; Measurement system and observation error
Learning Objectives:– Explain why measurement is necessary and discuss conditions that affect the degree of accuracy required.
– Compare the advantages of linear and nonlinear displays.
– Compare analog and digital devices and explain how each is applied to measurement.
– Name five sources of measurement error.
– Discuss proportionality and explain how it applies to transmitters.
Lesson 2 - Principles of Transducer Operation
Outputs; Mechanical, electrical, and pneumatic elements and response; Resistance, voltage, and frequency devices; Combining elements
Learning Objectives:– Discuss the need for linearity in a process.
– List examples of mechanical and electrical transducer elements.
– Compare pneumatic response and electrical/electronic response in transducers.
– Describe the operation of the bourdon tube, bellows, and diaphragm.
– Name examples of resistance, voltage response, frequency response, and electromechanical devices and explain how they work.
– Discuss the use of the Hall-effect transducer and the differential transducer.
Lesson 3 - Basic Process Measurement Systems
Interaction of system elements; Transmitters; Electrical vs. pneumatic output; Converters; Signal conditioning; Indicators and recorders
Learning Objectives:– Discuss the basic elements of measuring systems and explain how they interact.
– Describe how a physical quantity is translated into another quantity.
– Discuss the use of transmitters to relay information from one location to another and explain the transfer function.
– Describe the operation of at least five kinds of converters.
– Compare analog and digital indicators and recorders.
Lesson 4 - Systems Standards and Instrument Calibration
Interpreting specifications; Error; Accuracy; Precision; Resolution; Transfer function; Sensitivity; Hysteresis; Response time
Learning Objectives:– Discuss the specifications of a typical measurement system.
– Explain how to read a graph showing a linear or nonlinear transfer function, hysteresis, or the time constant.
– Discuss SI and English systems of units and explain how to convert from one to the other.
– Describe the elements of instrument calibration.
Lesson 5 - Maintaining System Quality
Equipment inventory and status records; Testing and calibration; Computer and PLC emulators; Equipment decontamination procedures
Learning Objectives:– Discuss the forms used to keep track of equipment inventory, repairs, and procedures for testing and calibration.
– Describe the equipment and procedures used for electrical testing and calibration.
– Describe the equipment and procedures used for electronic testing and calibration.
– Describe the equipment and procedures used for pneumatic testing and calibration.
– Explain what an emulator is and how it is used.
– Discuss the elements of proper decontamination procedures.