Miller & Weber

PerformaTherm ^{^TM}

Miller & Weber Part #	Range ** has aux ice pt	Divisions	Tolerance * * see definitions	Uncertainty * (k=2) * see definitions	With Report of Calibration at:	In Blue Case
T-3950/S62CFC	-38/+2 °C	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	-37, -30, -20, -10 & 0 °C	N
T-7950/S62CFC	-38/+2 °C	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	-37, -30, -20, -10 & 0 °C	Y
T-3950/S63CFC	-8/32 °C	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	-7, 0, 10, 20 & 30 °C	N
T-7950/S63CFC	-8/32 °C	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	-7, 0, 10, 20 & 30 °C	Y
T-3950/S64CFC	25/55 °C **	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	0, 25, 35, 45 & 55 °C	N
T-7950/S64CFC	25/55 °C **	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	0, 25, 35, 45 & 55 °C	Y
T-3950/S65CFC	50/80 °C **	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	0, 50, 60, 70 & 80 °C	N
T-7950/S65CFC	50/80 °C **	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	0, 50, 60, 70 & 80 °C	Y
T-3950/S66CFC	75/105 °C **	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	0, 75, 85, 95 & 105°C	N
T-7950/S66CFC	75/105 °C **	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	0, 75, 85, 95 & 105°C	Y
T-7950/S6266C	Full °C Set	0.1 °C	±0.1 °C	±0.02 °C at ice, ±0.05 °C over range	All	Y
T-3950/S62FFC	-36/+35 °F	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	-35, -15, 0, 15 & 32 °F	N
T-7950/S62FFC	-36/+35 °F	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	-35, -15, 0, 15 & 32 °F	Y
T-3950/S63FFC	18/89 °F	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	20, 32, 50, 70 & 88 °F	N
T-7950/S63FFC	18/89 °F	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	20, 32, 50, 70 & 88 °F	Y
T-3950/S64FFC	77/131 °F **	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	32, 80, 95, 115 & 130 °F	N
T-7950/S64FFC	77/131 °F **	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	32, 80, 95, 115 & 130 °F	Y
T-3950/S65FFC	122/176 °F **	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	32, 125, 145, 160 & 175 °F	N
T-7950/S65FFC	122/176 °F **	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	32, 125, 145, 160 & 175 °F	Y
T-3950/S66FFC	167/221 °F **	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	32, 168, 185, 200 & 220 °F	N
T-7950/S66FFC	167/221 °F **	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	32, 168, 185, 200 & 220 °F	Y
T-7950/S6266F	Full °F Set	0.2°F	±0.2 °F	±0.04 °F at ice, ±0.09 °F over range	All	Y

*Definitions

Tolerance: The maximum permissible error allowed for a specific thermometer. ASTM E-344 definition is: … the extreme values permitted by regulation or specification of the difference between the indication of a thermometer and the true value of temperature.

Uncertainty: The maximum expected error associated with a temperature measurement or calibration. ASTM E-344 definition is: the degree to which a measurement or calculation is in doubt, due to the influences both of bias and precision, relative to the accepted value.

Please note that the term Accuracy is a qualitative concept (and therefore should not have number values associated with it) meaning the closeness of agreement between the result of a temperature measurement and a true value of the temperature. It is most closely equivalent to uncertainty. We prefer not to use this term because it is misleading to our customers. An advertisement or data sheet could say a thermometer "is accurate to" a value but mean the uncertainty, and the customer will mistakenly assume it is the tolerance or maximum permissible error.