Basic Principles of Instrument Calibration
Every instrument has at least one input and one output. For a pressure sensor, the input would be some fluid pressure and the output would (most likely) be an electronic signal. For a variable-speed motor drive, the input would be an electronic signal and the output would be electric power to the motor. To calibrate an instrument means to check and adjust (if necessary) its response so the output accurately corresponds to its input throughout a specified range
Calibration is one exercise that is often taken for granted within an industrial plant. Even the most important industrial equipment will become useless if
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