Download and read Chapter 1 of Calibration: A Technician’s Guide by Mike Cable at www.isa.org/pdfs/calibration-principles-chapter1/.
The following topics are covered in Chapter 1:
Chapter 1 Calibration Principles
1.1 What Is Calibration?
1.2 What Are the Characteristics of a Calibration?
1.3 Why Is Calibration Required?
1.4 Who Performs Calibrations? – The Control System Technician
1.5 Characteristics of a Control System Technician
1.6 Loop Calibration vs. Individual Instrument Calibration
1.7 Bench Calibration vs. Field Calibration
1.8 Classification of Instruments
See other Guides in the ISA Technicain Guides Series.