# What is instrument calibration and why instrument calibration is required?

**URL:** <https://forumautomation.com/t/what-is-instrument-calibration-and-why-instrument-calibration-is-required/1300>\
**Category:** Calibration\
**Tags:** calibration, interviewquestions\
**Created:** [August 31, 2016, 4:23am UTC](https://forumautomation.com/t/what-is-instrument-calibration-and-why-instrument-calibration-is-required/1300 "2016-08-31T04:23:07Z")\
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**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [August 31, 2016, 4:23am UTC](https://forumautomation.com/t/what-is-instrument-calibration-and-why-instrument-calibration-is-required/1300/1 "2016-08-31T04:23:07Z")

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**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.