The measurement uncertainty in the calibration of a thermometer depends on the calibration method used, the uncertainty contri

uTrc	Calibration PRT	0 K	10 mK	normal	1
10 mK
uTrd	Drift - reference thermometer	0 K	10 mK	rectangular	1	5.8 mK
uTrcon	Conduction - reference thermometer	0 Ω	1.2 mK	rectangular	1	1.2 mK
uTca	Standard deviation	0 K	2 mK	normal	1	2 mK
uTch	DUC Hysteresis	0 K	1.2 mK	rectangular	1	1.2 mK
uTccon	DUC Conduction	0 K	1.2 mK	rectangular	1	1.2 mK
uRohm	Calibration multimeter	0 K	10mΩ	normal	2.5	20 mK
uRts	Time stability multimeter	0 K	0.5mΩ	rectangular	2.5	1.25 mK
uRres	Mulrimeter resolution	0 K	0.5mΩ	rectangular	2.5	1.25 mK
uRohmDUC	Calibration multimeter	0 K	10mΩ	normal	2.5	20 mK
uRtsDUC	Time stability multimeter	0 K	0.5mΩ	rectangular	2.5	1.25 mK
uRresDUC	Multimeter resolution	0 K	0.5mΩ	rectangular	2.5	1.25 mK
ubath h	Bath homogenity	0 K	18.4mK	normal	1	18.4mK
ubath s	Bath stability	0 K	3.2mK	normal	1	3.2mK
Expanded measurement uncertainty U (k=2)					72.2mK

The above example relate to the calibration of a thermometer at one temperature only. Usually, a thermometer is calibrated at several temperatures (calibration points) for which, as a rule, different measurement uncertainties result. As the user also employs the thermometer to carry out temperature measurements between the calibration points, it is, how­ever, helpful if the calibration certificate also contains statements on the use of the thermome­ter in the whole temperature range.

At the customer's, the thermometer is possibly used under conditions which are different from those under which the calibration was carried out. So contributions to the measurement uncer­tainty might dominate which could remain unaccounted for in the calibration. The measure­ment uncertainty in use can therefore considerably exceed the measurement uncertainty in calibration.