Transition temperatures of superconductive fixed points are extremely sensitive to ambient magnetic fields. Careful magnetic shielding, either active or passive, is required to obtain the standard zero-field condition. Application of an open shield simplifies the task by reducing the requirement of
โฆ LIBER โฆ
Preparation and calibration of the NBS SRM767: A superconductive temperature fixed point device
โ Scribed by J.F. Schooley; G.A. Evans Jr.; R.J. Soulen Jr.
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 733 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
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Apparatus is described for using the melting point of mercury and the triple point of carbon dioxide as auxiliary fixed points for the calibration of platinum thermometers. The repfoducibilities of the points were respectively 0.0005 and 0.0002 degree.