Title :
Resistance scaling from 10 m/spl Omega/ to 10 k/spl Omega/ at MIKES with Cryogenic Current Comparator and Guildline bridges
Author :
Satrapinski, A. ; Rautiainen, A. ; Rajala , R.
Author_Institution :
MIKES, Electricity, Time & Acoust., Espoo, Finland
Abstract :
An automated measurement system for resistance scaling is developed in MIKES. The system was compared with our Cryogenic Current Comparator (CCC) resistance bridge. The results of the measurements in the range 1 Ohm-10 kOhm agreed within 0.03 ppm. The same CCC bridge is used for the measurements of the 10 mOhm resistor with a combined standard uncertainty less than 1 ppm. Temperature hysteresis was observed in some of the standard resistors during measurements of their temperature coefficients.
Keywords :
bridge instruments; cryogenic electronics; current comparators; electric resistance measurement; measurement standards; measurement uncertainty; 10 mohm to 10 kohm; Guildline bridge; automated measurement system; cryogenic current comparator; measurement uncertainty; resistance scaling; standard resistor; temperature coefficient; temperature hysteresis; Bridges; Calibration; Cryogenics; Current measurement; Electrical resistance measurement; Measurement standards; Performance evaluation; Resistors; Temperature sensors; Time measurement;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034717
