Comparison of PNS and Thermal Converter AC Voltage Measurements Between BIPM and NMIA Using a Sampling Voltmeter

We present the results of an indirect comparison of low-frequency ac voltage measurements between a programmable Josephson voltage standard at BIPM, and thermal-converter-based ac-dc transfer standards at NMIA. The measurements were conducted at frequencies from 62.5 Hz to 625 Hz and voltages from 0...

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Bibliographic Details
Published in2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) pp. 1 - 2
Main Authors Budovsky, I., Kim, Mun-Seog, Solve, S., Gubler, G.B.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2018
Subjects
AC signal measurements
Australia
differential sampling
Frequency measurement
Measurement uncertainty
programmable Josephson standard
sampling measurement techniques
thermal converters
transfer standard
Uncertainty
Voltage measurement
Voltmeters
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Summary:We present the results of an indirect comparison of low-frequency ac voltage measurements between a programmable Josephson voltage standard at BIPM, and thermal-converter-based ac-dc transfer standards at NMIA. The measurements were conducted at frequencies from 62.5 Hz to 625 Hz and voltages from 0.8 V to 7 V using two sampling digital voltmeters as transfer standards. The ac-dc difference of the transfer standards was chosen as a comparison quantity due to its independence of the long-term drift of the gain of the transfer standards. The results show that the relative agreement degrades linearly from 0.1\times 10^{-6} to 1\times 10^{-5} as the frequency increases from 62.5 Hz to 625 Hz. The metrological suitability of a sampling DVM used as a transfer standard is discussed.
ISSN:2160-0171
DOI:10.1109/CPEM.2018.8501093