An automated measuring system for AC-DC current transfer standards were developed at the Swedish National Testing and Research Institute (SP). The use of a guard makes intercomparisons with ppm precision possible at frequencies up to 100 kHz. Two multijunction thermal converters are used for evaluating the uncertainty of the system
Published in:
Instrumentation and Measurement, IEEE Transactions on
(Volume:42
,
Issue:
2
)
Date of Publication: Apr 1993