publication . Article . 2010

Stability of High Temperature Standard Platinum Resistance Thermometers at High Temperatures

Open Access English
  • Published: 01 May 2010 Journal: Sensors & Transducers (issn: 2306-8515, eissn: 1726-5479, Copyright policy)
  • Publisher: IFSA Publishing, S.L.
An investigation of the stability of high temperature standard platinum resistance thermometers HTSPRTs has been carried out for two different designs thermometers (with nominal resistance 0.25 Ω and 2.5 Ω) from two different suppliers. The thermometers were heated for more than 160 hours at temperatures above 960 0C using a vertical furnace with a ceramic block. A study was made of the influence of the heat treatment on the stability of the resistance at the triple point of water, and on the relative resistance W(Ga) at the melting point of gallium. The thermometers showed a correlation between the drift note and the values of W(Ga). It was found also that the ...
free text keywords: HTSPRT, Melting point of gallium, Triple point of water, Technology (General), T1-995
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