Host: The Society of Instrument and Control Engineers
Co-host: IEEE/Industiral Electronic Society, IEEE/Robotics and Automation Society, IEEE/Control System Society
Pages 229
The freezing point of tin, one of the temperature fixed-points defined in the ITS-90, is newly developed and evaluated. The temperature stability of the furnace is within ±1.5mK for 24 hours and temperature distribution is within 2mK over 20cm. To realize a stable plateau after a large amount of supercooling, the air blow cooling method is introduced instead of the conventional method. The temperature during the plateaus decreases only 0.3mK for 8 hours and a good repeatability within ±0.026mK is obtained in ten measurements.
