Title :
Improvements in the realization of the quantized-Hall resistance standard at OFMET
Author :
Jeckelmann, B. ; Fasel, W. ; Jeanneret, B.
Author_Institution :
Swiss Federal Office of Metrol., Wabern, Switzerland
fDate :
June 27 1994-July 1 1994
Abstract :
A measurement system based on a cryogenic current comparator has been developed at the Swiss Federal Office of Metrology (OFMET) to maintain the electrical unit of resistance. Standard resistors in the range of 1 /spl Omega/ to 10 k/spl Omega/ can be measured against the quantized Hall resistance with a precision on the order of one part in 10/sup 9/(ppb). This system improves the measurement accuracy of OFMET in this range by one order of magnitude.<>
Keywords :
SQUIDs; comparators (circuits); electric resistance measurement; measurement standards; quantum Hall effect; units (measurement); 1 ohm to 10 kohm; OFMET; SQUID sensor; Swiss Federal Office of Metrology; cryogenic current comparator; electrical unit; measurement accuracy; measurement unit; quantized-Hall resistance standard; resistance unit; Bridge circuits; Cryogenics; Current measurement; Electric resistance; Electrical resistance measurement; Measurement standards; Metrology; Personal communication networks; Resistors; SQUIDs;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333267
