Abstract

Causes of uncertainties in temperature measurements are analysed. Some uncertainties are intrinsic to the temperature scale itself (built-in uncertainties). The rest are due to an assortment of experimental uncertainties. A simplified calibration procedure is proposed in the temperature range 0 °C ⩽ T ⩽ 660 °C that reduces the time (and thus the cost) of calibration by about 30% without a significant change in the accuracy of the scale imprinted on the calibrated platinum resistance thermometers.

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