ACCURATE CALIBRATION OF RESISTANCE RATIOS BETWEEN 1 MΩ AND 1 GΩ USING SERIES RESISTORS
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<sup>-6</sup> 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<i>-6</i> Ω/Ω. We expect that the presented method can also be used to calibrate arbitrary resistance ratios.
Event details
- Event
- XX IMEKO World Congress
- Place
- Busan, REPUBLIC of KOREA
- Time
- 9 September 2012 - 12 September 2012
- Website
- http://imeko2012.kriss.re.kr