Hybrid comparison of SPRT calibration in the triple point of argon (83.8058 K) and the triple point of mercury (234.3156 K)
The purpose of the this hybrid comparison is to compare realisation of the ITS-90 in the triple point of argon (83.8058 K) and triple point of mercury (234.3156 K) through the calibration of SPRT between Laboratory of Metrology and Quality (MIRS/UL-FE/LMK), acting as issuing institute, and „Faculty of Mechanical Engineering and Naval Architecture, Laboratory for Process Measurement“ (FSB-LPM) as applicant institute.
The transfer standard used will be quartz sheathed long-stem standard platinum resistance thermometer (SPRT) and resistance ratio W(FPi) values determined at each participating laboratory will be compared.