Technical Guide 3
The MSL technical guide TG3: "Propagating uncertainties in the SPRT subranges of ITS-90" has been superceded by the more helpful document Uncertainties in the realisation of the SPRT subranges of ITS-90 published by the BIPM's Consultative Committee for Thermometry (BIPM, Interntional Bureau of Weights and Measures, www.bipm.org ). The guide explains all of the sources of uncertainty in the use and calibration of standard platinum resistance thermometers (SPRT), and gives the expressions for total uncertainty for a wide range of measurement senarios. pdf 929 KB