High stability of temperature control using vacuum insulated wall for gauge block measurement

Conference proceedings article

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Publication Details

Author list: Ranusawud M., Limsuwan P., Vatcharanukul K., Somthong T.

Publisher: Trans Tech Publications

Publication year: 2014

Volume number: 613

Start page: 133

End page: 138

Number of pages: 6

ISBN: 9783038351122

ISSN: 1013-9826

eISSN: 1662-9795

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902687776&doi=10.4028%2fwww.scientific.net%2fKEM.613.133&partnerID=40&md5=c3175a89feba706f89ff1ed262c177ec

Languages: English-Great Britain (EN-GB)

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Abstract

The temperature has a critical effect on long gauge block measurement by interferometry. To reduce this effect, we developed a vacuum insulated wall for long gauge block measurement system. The long gauge block chamber has the dimension of 1.2 m ื 2 m. The vacuum insulating walls are mainly composed of 8-mm and 10-mm thick Aluminum plates as the chamber walls and a rotary pump. Using this technique, the vacuum insulator is treated to have the pressure of 0.9 mbar. This technique can reduce heat transfer from outside environment to the chamber due to low heat conductivity of the system. The temperature stability of the chamber had been continuously investigated using 5 Pt100 probes and their temperature stability are below 15 mK at 17 OC, 20 OC and 23 OC . ฉ (2014) Trans Tech Publications, Switzerland.

Keywords

Gauge block interferometer, Temperature control, Vacuum insulated wall