Title :
Novel transfer standard for temperature measurements of The International Avogadro project
Author :
Bettin, Horst ; Nicolaus, Arnold ; Rudtsch, Steffen ; Massa, Enrico ; Merlone, Andrea
Author_Institution :
Phys.-Tech. Bundesanstalt, Braunschweig
Abstract :
The International Avogadro Coordination aims at determining the Avogadro constant by measuring the molar mass, lattice parameter and density of a 28Si single crystal. As the temperature dependent quantities are measured in different apparatuses, the consistency of the temperature measurements has to be proven. An electronic temperature reference and a standard platinum resistance thermometer (SPRT) are used - in a first round - to compare the temperature measurements at the INRIM and PTB.
Keywords :
constants; resistance thermometers; silicon; temperature measurement; transfer standards; 28Si single crystal density; Avogadro constant; International Avogadro Coordination; Si; electronic temperature reference; lattice parameter; molar mass; standard platinum resistance thermometer; temperature measurements; transfer standards; Density measurement; Electrical resistance measurement; Lattices; Measurement standards; Ocean temperature; Performance evaluation; Resistors; Sea measurements; Temperature measurement; Volume measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574689
