Dictionary · Calibration
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.
Related terms
More from 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.
VIM (JCGM 200:2012) 2.43
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
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
Zero adjustment of a measuring system
Adjustment so that the system provides a null indication corresponding to a zero value of the quantity to be measured.
VIM (JCGM 200:2012) 3.12
As-found / as-left data
Calibration results recorded before (as-found) and after (as-left) any adjustment or repair. As-found data support reverse-traceability decisions about product accepted with the instrument since its previous calibration.
Calibration practice; NCSLI RP-1
Calibration diagram
A graphical expression of the relation between indication and corresponding measurement result, showing the strip of estimated uncertainty around the relation.
VIM (JCGM 200:2012) 4.30