Title :
An improved straddling method with triaxial guards for the calibration of inductive voltage dividers at 1592 Hz
Author_Institution :
Physikalisch-Tech. Bundesanstalt, Braunschweig, West Germany
fDate :
10/1/1989 12:00:00 AM
Abstract :
Calibrated inductive voltage dividers (IVDs) with the smallest possible uncertainties are required for the determination, maintenance, and dissemination of the ohm and the farad. An improved straddling method is described which uses triaxial guards to decrease systematic errors due to screen currents. The relative uncertainty with which IVD voltage ratios can be determined is calculated to be 1×10-9 (1 σ) at a frequency of 1592 Hz
Keywords :
calibration; capacitance measurement; electric resistance measurement; measurement errors; units (measurement); voltage dividers; 1592 Hz; calibration; farad; inductive voltage dividers; ohm; screen currents; straddling method; systematic errors; triaxial guards; Bridge circuits; Calibration; Capacitance; Circuit testing; Electric variables measurement; Frequency conversion; Frequency measurement; Magnetic cores; Uncertainty; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
