Title :
AccuBridge™ towards the development of a DC Current Comparator resistance ratio standard
Author :
Brown, Duane ; Wachowicz, Andrew ; Huang, Shiping
Abstract :
Inherent ratio errors of 0.1 to 0.2 ppm in the Direct Current Comparator (DCC) have hindered its development as a standalone bridge. By improving the technologies described in the paper, the reduction of the inherent ratio error to <; 0.02 ppm can be achieved. Verification of the ratio accuracy can now be performed from a ratio of 0.07:1 to 14:1 with a resolution of 0.001 ppm. Automatic balancing facilitates the operation of the bridge for more accurate resistance measurements over the range of 0.1Ω to 100 kΩ.
Keywords :
calibration; current comparators; measurement standards; AccuBridge technology; DC current comparator resistance ratio standard; automatic balancing; direct current comparator; inherent ratio error reduction; resistance 0.1 ohm to 100 kohm; resistance calibrations; resistance measurements; Bridges; Calibration; Current measurement; Detectors; Electrical resistance measurement; Electromagnetic measurements; Master-slave; Resistors; Voltage; Wounds; AccuBridge™; Direct Current Comparator (DCC); ampere turns; improved partial turn technology; ratio error; turns calibration; variable slave turns;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-6795-2
DOI :
10.1109/CPEM.2010.5544229
