Abstract
THE use of thermocouples for the measurement of temperature has become so customary in industry that the issue by the Bureau of Standards of the United States of a pamphlet of 36 pages by Messrs. W. F. Roeser and H. T. Wensel on the methods of testing them and the materials of which they are constructed will be welcomed by many workers in industry.’ It is Research Paper 768 of the Bureau, and is issued at the low price of 5 cents. It deals with the best materials to use for a given range of temperature, how to secure that they are pure and how to standardise the couples when constructed. On the whole, the authors prefer a freezing point rather than a boiling point for a standard temperature when each is available, but instructions are given for carrying out standardisations in each way and also for comparisons with working standards of the thermo-couple type. The best methods of interpolating for temperatures between the standard temperatures are also dealt with. Some idea of the accuracy to be expected from observations with various types of thermo-couples over different ranges of temperature is also given.
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Thermo-couple Standardisation. Nature 136, 177 (1935). https://doi.org/10.1038/136177a0
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DOI: https://doi.org/10.1038/136177a0