The error introduced by the coil size averaging effect when measuring nonuniform low-frequency (LF) magnetic fields is investigated with particular reference to the use of field meters equipped with nonconcentric coil probes. The analysis is developed by computation and the results are validated by comparison with experimental data. The influence of different parameters, such as source type, distance of the probe from the source, coil dimension, and probe orientation, is investigated and quantified. The results are synthesized by introducing limit distances fromthe field source, beyond which the averaging error is lower than a stated value. An estimate of the uncertainty component due to averaging error is also given.
Probe influence on the measurement accuracy of non uniform LF magnetic fields / Bottauscio, Oriano; Chiampi, M; Crotti, Gabriella; Zucca, Mauro. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 54:(2005), pp. 722-726. [10.1109/TIM.2004.843059]
Probe influence on the measurement accuracy of non uniform LF magnetic fields
BOTTAUSCIO, ORIANO;CROTTI, GABRIELLA;ZUCCA, MAURO
2005
Abstract
The error introduced by the coil size averaging effect when measuring nonuniform low-frequency (LF) magnetic fields is investigated with particular reference to the use of field meters equipped with nonconcentric coil probes. The analysis is developed by computation and the results are validated by comparison with experimental data. The influence of different parameters, such as source type, distance of the probe from the source, coil dimension, and probe orientation, is investigated and quantified. The results are synthesized by introducing limit distances fromthe field source, beyond which the averaging error is lower than a stated value. An estimate of the uncertainty component due to averaging error is also given.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
