Title :
Recent determinations of RH in terms of Omega 69-BI
Author :
Delahaye, Francois ; Satrapinsky, Alexander ; Witt, Thomas J.
Author_Institution :
Bur. Int. des Poids et Mesures, Sevres, France
fDate :
4/1/1989 12:00:00 AM
Abstract :
A system based on a cryogenic current comparator is used to measure the quantized Hall resistance RH in terms of Omega 69-BI, the Bureau International des Poids et Mesures (BIPM) representation of the ohm, with an uncertainty of 1.5*10-8. This measurement system and the former potentiometric one are in good agreement within their combined uncertainties (5.1*10-8).
Keywords :
comparators (circuits); electric resistance measurement; low-temperature techniques; quantum Hall effect; units (measurement); BIPM; cryogenic current comparator; measurement units; ohm; quantized Hall resistance; Bridge circuits; Current measurement; Electrical resistance measurement; Petroleum; Platinum; Q measurement; Resistors; Switches; Temperature measurement; Thermal resistance;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
