Study of the Instability of Noble Metal Thermocouples in Vacuum
作者:
B. E. Walker,
C. T. Ewing,
R. R. Miller,
期刊:
Review of Scientific Instruments
(AIP Available online 1965)
卷期:
Volume 36,
issue 5
页码: 601-606
ISSN:0034-6748
年代: 1965
DOI:10.1063/1.1719643
出版商: AIP
数据来源: AIP
摘要:
Thermoelectric instabilities of noble metal thermocouples and individual thermoelements (platinum, rhodium, iridium, platinum‐rhodium, and iridium‐rhodium alloys) have been studied in vacuum in the temperature range 800 to 1600°C. These studies are an extension of previous work performed in oxidizing and neutral atmospheres. As in that work, the principal source of instability was found to be contamination of the thermoelements by impurities from ceramic protection tubes. Thermocouple errors associated with this contamination are reported and compared with the previous data.
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