AN IMPROVEMENT OF DC VOLTAGE RATIO MEASURUREMENTS BY CHARACTERIZATION OF THE DC VOLTAGE DIVIDER AT UME
Tezgül Coskun Öztürk, Saliha Turhan, Okan Yilmaz
Abstract:
The accuracy of the DC voltage measurements higher than 10 V depends on the accuracy of DC voltage ratio measurements. Reference standards for DC voltage ratio measurements are resistive voltage dividers which are generally self calibrated by their own bridges.
Calibration of a absolute voltage divider with wide ratio range, such a Datron 4902S, using its bridge is difficult and time consuming calibration. Three different methods for the calibration have been investigated in order to make simpler divider calibration without losing from uncertainty. An extensive set of measurements were performed on Datron 4902S and its ratio drift for one year has been determined as less than 0.3·10-6 for all ratios from 20V:10V to 1000 V:10 V. The measurement results of Datron 4902S are presented.
Keywords:
DC voltage ratio, voltage divider, calibration
Download:
IMEKO-WC-2012-TC4-O6.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
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