Bilateral comparison of the realisations of the ITS-90 at the freezing points of Al (660,323 °C) and Ag (961,78 °C)

Project Description

Bilateral comparison between LNE-Cnam and KIM-LIPI to:

1) demonstrate KIM-LIPI's technical capabilities
2) link KIM-LIPI to main regional comparison EUROMET.T-K4

Final Report 2016-05-02

The thermometer RS90Z-7 of METROLOGI-LIPI has been measured at the freezing points of silver and aluminum at LNE-Cnam. At the silver freezing point, it shows a severe instability. At the aluminum freezing point it is reproducible within 1 mK, but shows a large deviation.

Such values do not allow assessing the calibration uncertainties declared by METROLOGI-LIPI at the freezing point of silver and aluminum.

It was not possible to solve the instabillity problems. So the comparison was stopped.

Thermometry (T)
Coordinating Institute
Participating Partners
LNE (France)
Further Partners
KIM-LIPI (Research Center for calibration, instrumentation and metrology - Indonesian Institute of Sciences PUSPIPTEK, South Tangerang, Banten- INDONESIA)