A high temperature noise thermometer for accurate thermodynamic temperature measurements

Author

Crovini, Luigi ; Actis, Antonio ; Galleano, Roberto

Author_Institution

Istituto di Metrol. ´´G. Colonnetti´´, Torino, Italy

Volume

42

Issue

2

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

391

Lastpage

394

Abstract

A new version of a noise thermometer was realized at the Istituto di Metrologia Gustavo Colonnetti (IMGC) to determine the thermodynamic temperature of the melting and freezing points of copper. Low-noise, low-input-capacitance amplifiers, cross-correlating amplifiers, and specially shielded resistive sensors were designed, realized, and tested. They are described and their relevant features are discussed as well as the problems associated with EMI and electrical leakages at high temperatures

Keywords

copper; freezing; measurement standards; melting point; temperature measurement; Cu; EMI; Istituto di Metrologia Gustavo Colonnetti; cross-correlating amplifiers; electrical leakages; freezing points; high temperature noise thermometer; low-input-capacitance amplifiers; melting point; shielded resistive sensors; thermodynamic temperature measurements; Circuit noise; Electrical resistance measurement; Frequency; Low-noise amplifiers; Noise level; Noise measurement; Resistors; Signal to noise ratio; Temperature measurement; Thermodynamics;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.278588

Filename

278588