Automated comparator for AC-DC difference accurate measurements used at the BNM-LCIE

Author

Poletaeff, A.

Author_Institution

ENM-LCIE, Fontenay-aux-Roses, France

fYear

1998

fDate

6-10 July 1998

Firstpage

512

Lastpage

513

Abstract

This paper describes the new automated comparator used at the BNM-LCIE for the calibration of voltage thermal converters with the best level of uncertainty. It allows to achieve A-type uncertainties of the order of a few parts in 10/sup 7/ in the frequency range from 10 Hz to 1 MHz (100 kHz for voltages above 100 V). B-type measurement uncertainty depends on the type of converters to be compared and on the applied voltage level, but generally is between a few parts in 10/sup 7/ and a few parts in 10/sup 6/.

Keywords

calibration; comparators (circuits); convertors; measurement uncertainty; transfer standards; voltage dividers; voltage measurement; 10 Hz to 1 MHz; A-type uncertainties; AC-DC difference measurement; B-type uncertainty; accurate measurements; automated comparator; calibration; differential method; maintenance; resistive divider; transfer standard; voltage thermal converters; Analog-digital conversion; Calibration; Electrical resistance measurement; Impedance measurement; Performance evaluation; Protection; Q measurement; Switches; Transistors; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1998 Conference on

Conference_Location

Washington, DC, USA

Print_ISBN

0-7803-5018-9

Type

conf

DOI

10.1109/CPEM.1998.700031

Filename

700031