Thermal Strain Effects in Standard Platinum Resistance Thermometers

Metrologia ◽  
1983 ◽  
Vol 19 (1) ◽  
pp. 37-47 ◽  
Author(s):  
Robert J Berry
Keyword(s):  
Thermal Strain ◽  
Platinum Resistance ◽  
Strain Effects ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Standard Platinum Resistance Thermometers

Oxidization Characteristics of Some Standard Platinum Resistance Thermometers

2008 ◽  
Vol 47 (10) ◽  
pp. 8071-8076 ◽  
Author(s):  
Hirohisa Sakurai ◽  
Toru Yamaguchi ◽  
Nobuo Hiura ◽  
Kazuya Yoneshita ◽  
Hideo Kimura ◽  
...  
Keyword(s):  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Standard Platinum Resistance Thermometers

INTERCOMPARISON OF 11 RESISTANCE THERMOMETERS AT THE ICE, STEAM, TIN, CADMIUM, AND ZINC POINTS

1959 ◽  
Vol 37 (4) ◽  
pp. 422-432 ◽  
Author(s):  
E. H. McLaren
Keyword(s):  
High Purity ◽  
Strong Support ◽  
Platinum Resistance ◽  
Liquidus Point ◽  
Triple Point Of Water ◽  
Boiling Points ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Different Types ◽  
Standard Platinum Resistance Thermometers

Eleven standard platinum resistance thermometers, including thermometers having three different types of construction, have been intercompared at the triple point of water, boiling point of water, and the liquidus points of high purity tin, cadmium, and zinc. Temperature coefficients determined from measurements at the triple and boiling points of water and the zinc point were used to calibrate the thermometers for the temperature calculations on measurements at the tin and cadmium points. The results show that, although the measurements were made at a precision of about 0.0002 °C at each fixed point, distinctive deviations from quadratic resistance–temperature relations were not found for the 11 thermometers. This verification of the quadratic form for the resistance–temperature relationship realized with these thermometers gives strong support for the use of the liquidus point of high purity indium, tin, or cadmium as a precision alternative to the steam point on the International Temperature Scale.

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