Physical phenomena affecting the platinum resistance thermometer
Uncertainties in calibration of long stem platinum resistance thermometer according to the ITS-90.
Article REF: R2512 V2
Physical phenomena affecting the platinum resistance thermometer
Uncertainties in calibration of long stem platinum resistance thermometer according to the ITS-90.

Author : Éliane RENAOT

Publication date: March 10, 2016 | Lire en français

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4. Physical phenomena affecting the platinum resistance thermometer

4.1 Modification of the geometric characteristics of the sensing element

The resistance of a metal wire is given by the formula :

RT=ρTITST

with :

R T
 : 
wire resistance at temperature T, in ohm,
ρ T
 : 
resistivity...
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