Definition
Calibration compares a measuring instrument's output against a known, traceable reference standard and either adjusts the instrument or documents its deviation, ensuring the readings it produces can be trusted for the decisions that rely on them. It addresses measurement accuracy specifically, not the condition of the equipment being measured.
Key facts
- Compares an instrument's reading against a traceable reference standard, not against another asset or a general benchmark.
- Can result in an adjustment to the instrument or simply a documented deviation if adjustment is not possible on site.
- Addresses measurement trustworthiness itself, distinct from inspecting the condition of the asset the instrument measures.
- Typically has its own defined interval and certificate, often required for regulatory or quality-system compliance.
Why does Calibration matter in maintenance?
Calibration establishes whether a measuring instrument's output agrees with a known, traceable reference within an acceptable tolerance, and either corrects the instrument or records the deviation found, so downstream decisions based on its readings remain trustworthy.
How do maintenance teams apply Calibration?
An inspection checks the condition of an asset or feature against a standard, often visually or dimensionally. Calibration specifically checks the accuracy of a measuring instrument against a reference: a narrower, metrology-focused activity that can itself be a required step within a broader inspection program.
FAQ
Frequently asked questions
How is a measuring instrument's reading compared with a reference?
Through calibration: comparing the instrument's output against a known, traceable reference standard and either adjusting the instrument or documenting the deviation found.
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