permeameter
Table of Contents
Permeameter
Stan Zurek, Permeameter, Encyclopedia Magnetica, https://e-magnetica.pl/doku.php/permeameter |
Permeameter - a type of instrument used for measurement of magnetic properties of magnetically soft materials.
Fahy Simplex permeameter1)
National Institute of Standards and Technology Digital Collections
The name was first applied by Silvanus P. Thompson to an apparatus devised by himself in 1890. In his device the mechanical force required to detach one end of the sample from an iron yoke of special form is a measure of the permeability.2)
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The table below lists some of the most commonly used DC permeameters. Their ranges overlap so that the total range of magnetic field strength is from about 4 A/m (0.05 Oe) up to above 400 kA/m (5000 Oe or 5 kOe).3)
Permeameter | Useful magnetic field strength range (m) | Method of sensing magnetic field strength | Reluctance compensation | Magnetising coil around the specimen |
---|---|---|---|---|
Babbit | 3.2-80 kA/m | magnetising current, H-coil | yes | yes |
Burroughs (Burrows) | 0.008-24 kA/m | magnetising current | yes | yes |
Fahy | yes | |||
Fahy Simplex (requires a standard sample for calibration) | 0.008-24 kA/m | H-coil | no | no |
Fahy Simplex Super H adapter | 8-200 kA/m | H-coil | no | no |
Full range | 0.004-112 kA/m | H-coil | yes | yes |
High H | 8-400 kA/m | flip coil | yes | no |
Iliovici | 0.04-400 kA/m | magnetising current, H-coil | yes | yes |
IEC type A | 0.008-200 kA/m | H-coil, Hall-effect probe | no | yes |
IEC type B | 0.008-50 kA/m | Rogowski-Chattock potentiometer | no | no |
Isthmus | 8-1600+ kA/m | H-coil, Hall-effect probe | no | no |
MH | 0.008-24 kA/m | flip coil | yes | yes |
NPL | 0.04-200 kA/m | magnetising current, H-coil | yes | yes |
Saturation | 8-320 kA/m | H-coil | no | yes |
Thompson | ||||
Sanford-Bennett |
See also
References
permeameter.txt · Last modified: 2023/09/05 14:29 by stan_zurek