CONCERNING THE STABILITY OF SOME BASE-METAL THERMOCOUPLES (CHROMEL, ALUMEL, NISIL, NICROSIL, NI, VERSUS PT)

Authors
ANCSIN J
Citation
J. Ancsin, CONCERNING THE STABILITY OF SOME BASE-METAL THERMOCOUPLES (CHROMEL, ALUMEL, NISIL, NICROSIL, NI, VERSUS PT), Metrologia, 33(2), 1996, pp. 117-131
Citations number
7
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Metrologia → ACNP
ISSN journal
00261394
Volume
33
Issue
2
Year of publication
1996
Pages
117 - 131
Database
ISI
SICI code
0026-1394(1996)33:2<117:CTSOSB>2.0.ZU;2-1
Abstract
Drift of emf in bare-wire, base metal thermocouples is linked to the p recipitation of alloying components that supersaturate the host (Ni) l attice. Using a simple phenomenological description, one can visualize the process of precipitation from supersaturated solid solutions. Som e possible reasons for the changes in alloy composition in metal sheat hed thermocouples are suggested.