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 :
4/1/1995 12:00:00 AM
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 Ω to 10 kΩ can be measured against the quantized Hall resistance with an accuracy on the order of a few parts in 109 . This recently completed system improves the measurement accuracy at OFMET in this range by 1 order of magnitude
Keywords :
SQUIDs; bridge circuits; cryogenic electronics; current comparators; electric resistance measurement; measurement standards; quantum Hall effect; 1 ohm to 10 kohm; OFMET; SQUID; Swiss Federal Office of Metrology; cryogenic current comparator; electrical unit; measurement accuracy; measurement standards; quantized Hall resistance; ratio accuracy; resistance; standard resistors; Bridge circuits; Bridges; Cryogenics; Electric resistance; Electrical resistance measurement; Measurement standards; Metrology; Resistors; SQUIDs; Superconducting coils;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
