Metrological Aspects of Measuring the Volume-Average Temperature of Filaments in Illuminating Lamps

We study metrological problems encountered in measuring the volume-average temperature of heated tungsten filaments. The process of heating is realized by electric currents within the temperature range 300–3000 K. The measurements were carried with the use of an improved method of thermal resistance...

Full description

Saved in:
Bibliographic Details
Published in:Measurement techniques 2019-07, Vol.62 (4), p.358-364
Main Authors: Zakharov, Yu. A., Gots, S. S., Bakhtizin, R. Z.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Contact potentials
Electric contacts
Error analysis
Filaments
Measurement Science and Instrumentation
Physical Chemistry
Physics
Physics and Astronomy
Specific heat
Thermal resistance
Tungsten
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study metrological problems encountered in measuring the volume-average temperature of heated tungsten filaments. The process of heating is realized by electric currents within the temperature range 300–3000 K. The measurements were carried with the use of an improved method of thermal resistance characterized by a weaker influence of the heat losses and contact potential drops in current-supplying wires, a lower error of measurements of the resistance of filament at the initial temperature, and the possibility of taking into account the nonlinearity of temperature dependences of the analyzed resistance near or below the Debye temperature. The relative error of measurements is estimated.
ISSN:0543-1972
1573-8906
DOI:10.1007/s11018-019-01630-0