Correction of the gas-thermometry scale of the VNIIFTRI in the range 2,5 K to 308 K

Abstract

New measurements of the thermal expansion of the copper used to manufacture the VNIIFTRI gas thermometer were performed and the temperature scale was corrected. The deviations of recalculated T(gas) scale from the IPTS-68 scale and from the ITS-90 scale in the range 13 K to 308 K were found.