Bilateral comparison on 0.9 μm radiation temperature scale between NIMT and Puslit KIM-LIPI

A bilateral comparison of radiance temperature scale between the National Institute of Metrology Thailand (NIMT) and the Research Center for Calibration, Instrumentation and Metrology - Indonesian Institute of Sciences (Puslit KIM-LIPI) was conducted with support from the National Metrology Institute of Japan (NMIJ). A 0.9 μm radiation thermometer provided by the NMIJ was used as transfer device in this comparison. A radiation thermometer of the same wavelength belonging to the KIM-LIPI was hand carried to the NMIJ and was compared with the transfer device at the NMIJ in the temperature range from 600 °C to 1500 °C, after which the transfer device was hand carried to the NIMT to be calibrated by means of comparison method against NIMT´s 0.9 μm radiation thermometer at the same nominal temperature points. The evaluation of the result was conducted in a method compatible with the CCT/WG8 radiation thermometry CMC review protocol.