L O Becerra et al 2006 Metrologia 43 426 doi:10.1088/0026-1394/43/5/014
L O Becerra1, J Berry2, C S Chang3, G D Chapman4, J W Chung5, R S Davis6, I Field7, P Fuchs8, U Jacobsson9,18, S M Lee10, V M Loayza11, T Madec12, C Matilla13, A Ooiwa14, F Scholz15, C Sutton16 and I van Andel17
Show affiliationsThe ubiquitous technology of magnetic force compensation of gravitational forces acting on artifacts on the pans of modern balances and comparators has brought with it the problem of magnetic leakage from the compensation coils. Leaking magnetic fields, as well as those due to the surroundings of the balance, can interact with the artifact whose mass is to be determined, causing erroneous values to be observed. For this reason, and to comply with normative standards, it has become important for mass metrologists to evaluate the magnetic susceptibility and any remanent magnetization that mass standards may possess. This paper describes a comparison of measurements of these parameters among seventeen national metrology institutes. The measurements are made on three transfer standards whose magnetic parameters span the range that might be encountered in stainless steel mass standards.
06.20.fb Standards and calibration
07.55.Jg Magnetometers for susceptibility, magnetic moment, and magnetization measurements
Issue 5 (October 2006)
Received 3 April 2006
Published 21 September 2006
L O Becerra et al 2006 Metrologia 43 426
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