Glossary · definition
Calibration
The operation that, under specified conditions, establishes a relation between the values indicated by a measuring instrument and the corresponding values realised by reference standards, with their uncertainties. Calibration does not itself adjust the instrument.
See also:Metrological traceabilityMeasurement uncertaintyAs-found / as-left
Want it explained for your situation?
Ask ValiTrac AI — the answer cites the standard the definition comes from.
Ask ValiTrac AIDefinitions are aligned with the international vocabulary of metrology (JCGM 200) and common laboratory usage; consult the source document for the normative wording. All terms
Articles on Calibration
What is CMC in calibration?
Calibration and Measurement Capability is a laboratory's best-case uncertainty, not the accuracy of your instrument.
ISO/IEC 17025 calibration explained
What accreditation to ISO/IEC 17025 does and does not tell you about a calibration.
Dry block vs environmental chamber
Two common ways to generate a temperature for calibration, suited to different sensors, ranges and uncertainties.
How to calibrate a Pt100
Calibration by comparison against a reference thermometer, and the factors that decide the uncertainty.
What should a calibration certificate contain?
A checklist for reading a certificate — and the items whose absence should make you ask questions.
Common temperature mapping mistakes
Most failed studies fail before the loggers are placed — in the plan, the metadata or the calibration.