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Calibration of a Hall effect gaussmeter and an investigation of its properties Kassam, Jasmyne; Sinclair, Emily
Abstract
A gaussmeter is constructed using an integrated Hall effect device in order to measure the strengths of magnetic fields. The instrument is calibrated using uniform magnetic fields generated by Helmholtz coils. The data from the calibration is analyzed to determine linearity and sensitivity with respect to the Hall voltage output. The Hall voltage is determined to be linearly proportional to the magnetic field strength in the range of 0.1 mT to 3 mT; however, nonlinearity beyond that range is found to be significant. The sources of nonlinearity are determined to be most likely either material or geometrical. Finally, the sensitivity in the instrument is found to be 5.6 V/T, which is significantly different from the manufactureradvertised sensitivity of 13 V/T. Potential causes for the discrepancy are explained. The implications of all of the above on the effectiveness of the gaussmeter are discussed.
Item Metadata
Title |
Calibration of a Hall effect gaussmeter and an investigation of its properties
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Creator | |
Date Issued |
2015-03-20
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Description |
A gaussmeter is constructed using an integrated Hall effect device in order to measure
the strengths of magnetic fields. The instrument is calibrated using uniform magnetic fields
generated by Helmholtz coils. The data from the calibration is analyzed to determine linearity
and sensitivity with respect to the Hall voltage output. The Hall voltage is determined to be
linearly proportional to the magnetic field strength in the range of 0.1 mT to 3 mT; however,
nonlinearity beyond that range is found to be significant. The sources of nonlinearity are
determined to be most likely either material or geometrical. Finally, the sensitivity in the
instrument is found to be 5.6 V/T, which is significantly different from the manufactureradvertised
sensitivity of 13 V/T. Potential causes for the discrepancy are explained. The
implications of all of the above on the effectiveness of the gaussmeter are discussed.
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Genre | |
Type | |
Language |
eng
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Series | |
Date Available |
2015-10-24
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivs 2.5 Canada
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DOI |
10.14288/1.0220747
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URI | |
Affiliation | |
Campus | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Undergraduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivs 2.5 Canada