Title :
Method for Reduction of AC-DC Transfer Error Caused by the Thomson Effect for the Multijunction Thermal Converter
Author :
Zhang, Deh-shi ; Zhang, Zhong-Ua
Abstract :
It has been verified by calculation and experiment that in the multijunction thermal converter, the Thomson effect in regions near the ends of the heater is a main source of the ac-dc transfer error. A special converter with "guard couples" has been designed to reduce the error due to the end effects. The total transfer error of this converter is estimated to be less than I ppm.
Keywords :
Analog-digital conversion; Heat transfer; Helium; Metrology; Periodic structures; Standards development; Temperature; Thermal conductivity; Thermal force; Thermal resistance;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1980.4314969
