Dictionary · Calibration
Metrological traceability to a measurement unit
Traceability whose stated reference is the definition of a unit through its practical realization — "traceable to the SI" in its precise sense.
Related terms
More from Calibration
Calibration interval
The period between successive calibrations of an instrument, set and adjusted from stability history, usage, environment, and risk — commonly managed with interval-analysis methods such as those in NCSLI RP-1 and ILAC-G24.
ILAC-G24:2022
Calibration curve
The expression of the relation between indication and corresponding measured quantity value established by calibration — the diagram's central line, without the uncertainty strip.
VIM (JCGM 200:2012) 4.31
Calibrator
A measurement standard used in calibration — in some fields, a device or material whose assigned value is transferred to the instrument under calibration.
VIM (JCGM 200:2012) 5.12
Metrological comparability of measurement results
Comparability of results traceable to the same reference — what shared traceability buys: results that can be meaningfully compared even from different labs and methods.
VIM (JCGM 200:2012) 2.46
Metrological traceability
The property of a result whereby it can be related to a stated reference — usually the SI — through a documented unbroken chain of calibrations, each contributing to the uncertainty.
VIM (JCGM 200:2012) 2.41
Metrological traceability chain
The sequence of standards and calibrations used to relate a result to a stated reference — the concrete path behind a traceability claim.
VIM (JCGM 200:2012) 2.42