The WMAP spacecraft's temperature is monitored with platinum resistance thermometers.
2.
The highest-accuracy of all PRTs are the " Standard Platinum Resistance Thermometers " ( SPRTs ).
3.
Another classification of laboratory PRTs is " Secondary-Standard Platinum Resistance Thermometers " ( Secondary SPRTs ).
4.
For example, in the case of a platinum resistance thermometer, the temperature changes are translated into resistance changes.
5.
Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry.
6.
Between these fixed points, standard platinum resistance thermometers ( SPRTs ), constructed in a specified manner, are used to interpolate temperature values.
7.
The current international standard that specifies tolerance and the temperature-to-electrical resistance relationship for platinum resistance thermometers ( PRTs ) is IEC 60751 : 2008; ASTM E1137 is also used in the United States.
8.
It is important to note that these equations are listed as the basis for the temperature / resistance tables for idealized platinum resistance thermometers and are not intended to be used for the calibration of an individual thermometer, which would require the experimentally determined parameters to be found.
9.
An example of a reference thermometer used to check others to industrial standards would be a platinum resistance thermometer with a digital display to 0.1 �C ( its precision ) which has been calibrated at 5 points against national standards ( " 18, 0, 40, 70, 100 �C ) and which is certified to an accuracy of ?.2 �C.
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