What is instrument calibration and why instrument calibration is required?

calibration
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#1

Instrument Calibration

Calibration is performed to verify sensor/instrument performance.

Calibration is the process used to insure that a sensor/instrument maintains specification over time and changing ambient conditions.

Calibration is the process used to maintain traceability of parameter with reference to national/international standards.

Why calibration is required ?

Initial Calibration -
New palnt or equipment commissioning
Verify vendor data - Insure accuracy of measurement.

Ongoing Calibration-

Minimize and control random and systematic errors
Compare and complement the quality and reliability of measurement by comparison to international standards.
Quality system requirements.Ensure consistent product quality.
Safety.