Pant, Umesh and Meena, Hansraj and Shivagan, D. D. (2018) Development and Realization of Iron-Carbon Eutectic Fixed Point at NPLI. Mapan journal of metrology society of india, 33 (3). pp. 201-208. ISSN 0970-3950

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Abstract

The concept of metal-carbon eutectic temperature fixed point has been introduced in 1999 and is extensively being investigated by thermometry researchers to cover the high-temperature range above copper fixed point. Metal-carbon eutectic fixed points also helped to provide direct traceability with reduced associated uncertainty in the high temperature range for thermometry and radiometry applications. In view of this, CSIR-National Physical Laboratory, India (NPLI) has developed iron-carbon (Fe-C, 1153 A degrees C) eutectic fixed point cell in the graphite crucible and realized by using the noble metal thermocouples. The preparation parameters such as design and fabrication of a graphite crucible, Fe:C eutectic composition and filling procedure, furnace profile, melting and freezing plateau measurements, heat flux immersion, inhomogeneity, etc. have been optimized and presented in this paper. The measurement uncertainty of the Fe-C eutectic cell realized with Type-S thermocouple was estimated to be 3.04 mu V (0.25 A degrees C) at coverage factor k = 2.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Metrology Society of India.
Subjects:	Instruments/ Instrumentation Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	05 Dec 2019 11:32
Last Modified:	05 Dec 2019 11:32
URI:	http://npl.csircentral.net/id/eprint/3840

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