Acta Metrologica Sinica  2011, Vol. 32 Issue (z1): 62-65    DOI: 10.3969/j.issn.1000-1158.2011.z1.17
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Study on Approximating the ITS-90 Temperature Scale with Industrial Platinum Resistance Thermometers
JIN Zhi-jun,ZHANG Jin-tao,ZHANG Zhe
National Institute of Metrology,Beijing 100013,China
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Abstract  For industrial-type platinum resistance thermometer (IPRTs), the most-used interpolation model (resistance versus temperature ) is based on the Callendar- Van Dusen (CVD) equation,and standard platinum resistance thermometer (SPRT) with interpolation equation based on the ITS-1990 .There are difference between CVD equation and ITS-1990.The experiment results show, it is feasible to use ITS-1990 interpolation methords for IPRTs.There are more uniformity and accuracy with ITS-1990 than that with CVD equation.
Key words： Metrology      Industrial Platinum Resistance Thermometer      Callendar-Van Dusen equation      ITS-90 International Temperature Scale      Inetepolation model     
PACS:  TB942  
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JIN Zhi-jun
ZHANG Jin-tao
ZHANG Zhe
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JIN Zhi-jun,ZHANG Jin-tao,ZHANG Zhe. Study on Approximating the ITS-90 Temperature Scale with Industrial Platinum Resistance Thermometers[J]. Acta Metrologica Sinica, 2011, 32(z1): 62-65.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2011.z1.17     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2011/V32/Iz1/62
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