A modified technique for calibration of current-comparator-based capacitance bridge and its verification

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DOIResolve DOI: http://doi.org/10.1109/TIM.2010.2096952
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TypeArticle
Journal titleIEEE Transactions on Instrumentation and Measurement
ISSN0018-9456
Volume60
Issue7
Article number5677471
Pages26422647; # of pages: 6
SubjectCalibration techniques; Capacitance bridge; Comparison result; dissipation factor (DF); High-voltages; Measurement uncertainty; National Research Council of Canada; Negative polarity; ratio; Relative uncertainty; Research institutes; uncertainty; Calibration; Comparators (optical); Uncertainty analysis; Capacitance
AbstractA modified technique for calibrating both the capacitance-ratio and dissipation-factor (DF) dials of a current-comparator-based high-voltage capacitance bridge has been developed at the Korea Research Institute of Standards and Science (KRISS). The capacitance-ratio and DF dials are calibrated in the ratio range from 1/1 to 1000/1 and in the DF range from 10 × 10-6 to 1 × 10-1 for both positive and negative polarities. From the calculated and measured values of the corresponding dial balanced readings, the errors in the capacitance-ratio- and DF-dial readings are derived. The relative uncertainty of the modified calibration technique is also obtained to be not more than 10 × 10-6 of unity for the ratio-dial calibration, whereas the relative uncertainty of the DF dials from 1 × 10-3 to 1 × 10-1 is not more than 0.4% of the dial indication except the dissipation lower than 1 × 10-3 for which the corresponding absolute uncertainty is 5 × 10-6. The comparison results of the calibration performed at KRISS and the National Research Council of Canada show a good consistency with the measurement uncertainty. © 2006 IEEE.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271772
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Record identifier6de0d4bf-d9ea-4b9a-bf52-3d08f2659ac7
Record created2014-03-24
Record modified2016-05-09
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