Title :
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
fDate :
4/1/1993 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
