Performance of a new set of In, Sn and Zn Temperature Fixed-Points

• Autorzy: Ahmed M. G. , Ali K.
• Języki publikacji: EN

Abstrakty

EN

A comparison of a new set of "In, Sn and Zn" temperature fixed-points on the International Temperature Scale of 1990 (ITS-90) was carried out at the National Institute of Standards (NIS - Egypt). The new set was manufactured by Hart Scientific - USA. The comparison was performed to measure their performance and capabilities in calibrating Standard Platinum Resistance Thermometers (SPRTs). This comparison was carried out using four calibrated SPRTs and the reference set of "In, Sn and Zn". The used reference set was manufactured by National Physical Laboratory (NPL-England). Full description and measurements made to the two sets are presented. Measurements showed good results and some agreement between the two sets. The differences between cells of the new set and reference cells were well within 2 mK. This showed their capabilities and the possibility of using them in calibrating SPRTs.

Słowa kluczowe

EN

ITS-90; SPRT; fixed-point

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2007
• Tom: Vol. 14, nr 2
• Strony: 269--274
• Opis fizyczny: Bibliogr. 6 poz., rys., tab., wykr.

Twórcy

autor

Ahmed M. G.

autor

Ali K.

• National Institute for Standards (NIS), Thermal Measurements Laboratory, Giza, Egypt,

Bibliografia

• 1. Preston-Thomas H.: The international temperature scale of 1990 (ITS-90). Metrologia, 27, pp. 3–10, 1990.
• 2. El-Shammaa H., Moussa M. R., Omar M. H.: Realization of the triple point of water and the freezing points of tin and zinc at the National Institute of Standards (Egypt). Temperature its measurement and control in science and industry, vol. 5, pp. 205–208, 1982.
• 3. Ali K., Ahmed M. G., Moussa M. R., Rushdy M.: Realization of Gallium and Indium fixed points on ITS-90 at National Institute for Standards (NIS) in Egypt. MAPAN-Journal of Metrology Society of India, vol. 18, no. 2, pp. 51–56, 2003.
• 4. Ahmed M. G., Ali K.: Realization of Tin and Zinc fixed points on ITS-90 at National Institute for Standards (NIS) in Egypt. MAPAN-Journal of Metrology Society of India, vol. 19, no. 3, pp. 163–168, 2004.
• 5. Preston-Tomas H., Bloembergen P., Quinn T. J.: Supplementary Information for the International Temperature Scale of 1990. BIPM, Sevre, 1990.
• 6. Gamal M., Ali K., Moussa M. R.: Realization of the ITS-90 over the Temperature Range 83 K to 693 K at the National Institute for Standards NIS-Egypt. Temperature, Its Measurement and Control in Science and Industry, Symposium, New York, vol. 7, no. 1, pp. 59–64, 2003.