Title :
The role of high-purity noble metals in precision thermometry
Author :
Ripple, D.C. ; Strouse, G.F. ; Tew, W.L.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
A variety of alternate calibration schemes which approximate the ITS-90 are possible when using high-purity noble metals. The high purity of the sensor materials allows the use of correlations that exist between the measured properties at fixed point temperatures. The data from NIST Standard Reference Materials 1749 and 1750 serve to illustrate the degree to which such schemes may succeed using comparable material. The result is a variable cost versus accuracy tradeoff in calibration procedures that can be customized to the measurement needs of various industry sectors
Keywords :
calibration; measurement standards; temperature measurement; thermocouples; thermometers; ITS-90; NIST Standard Reference Materials 1749; NIST Standard Reference Materials 1750; calibration procedures; calibration schemes; correlations; fixed point temperatures; high-purity noble metals; industry sectors; measured properties; noble metals; precision thermometry; sensor materials; thermocouples; variable cost versus accuracy trade-off; Calibration; Chemical sensors; Costs; Gold; Inorganic materials; NIST; Platinum; Semiconductor materials; Temperature sensors; Thermal resistance;
Conference_Titel :
Sensors for Industry, 2001. Proceedings of the First ISA/IEEE Conference
Conference_Location :
Rosemont, IL
Print_ISBN :
0-7803-6659-X
DOI :
10.1109/SFICON.2001.968491
