Title :
A new calibration system for small AC voltages at power frequencies
Author :
Djokic, Branislav
Author_Institution :
Meas. Sci. & Stand., Nat. Res. Council of Canada, Ottawa, ON, Canada
Abstract :
A new current-comparator-based dual-channel calibration system for AC voltages in the millivolt range for operation at power frequencies has been developed. The range of generated voltages is 1 mV - 100 mV. The calibration system in-phase and quadrature expanded measurement uncertainties (k=2) are estimated to be within 25·106. The traceability to SI units is established through the calibration of standard resistor, capacitor, and current comparator ratios.
Keywords :
calibration; capacitors; current comparators; electric current measurement; measurement uncertainty; resistors; voltage measurement; SI unit; capacitor; current comparator ratio; current-comparator-based dual-channel calibration system; in-phase expanded measurement uncertainty; quadrature expanded measurement uncertainty; small AC voltage; standard resistor; voltage 1 mV to 100 mV; Bridge circuits; Calibration; Capacitors; Resistors; Uncertainty; Voltage measurement; Windings; AC voltage measurement; calibration; current comparator; digital sampling; measurement uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898613
