ACCURATE CALIBRATION OF RESISTANCE RATIOS BETWEEN 1 MΩ AND 1 GΩ USING SERIES RESISTORS |
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| K. M. Yu, W. S. Kim, K. S. Han, J. H. Kang, S. H. Lee, G. Ihm |
- Abstract:
- This paper presents a method for calibrating 10:1 ratios in a high-resistance bridge using series resistors simply and accurately. Using the presented method, the combined relative standard uncertainty for 1 GΩ resistance measurements with a modified Wheatstone bridge was estimated to be on the 1 × 10-6 level. The method was also applied to 1 GΩ resistance measurements using a directcurrent comparator resistance bridge. It was found that the 1 GΩ resistances determined by the two bridges agreed within 2.4 × 10-6 Ω/Ω. We expect that the presented method can also be used to calibrate arbitrary resistance ratios.
- Keywords:
- resistance ratio calibration, direct-current comparator resistance bridge, modified Wheatstone bridge, series resistors
- Download:
- IMEKO-WC-2012-TC4-P22.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012