The bridge is zeroed prior to the anisotropy
measurement after inserting the specimen into the
measuring coil, thus the most sensitive range can be
used. Special software combines the measurements in three
perpendicular planes plus one bulk value to create
complete susceptibility tensor. The errors in
determination of this tensor are estimated using special
method based on multivariate statistics principle.The instruments can also do fully automated
measurement of the field variation of both the in-phase
bulk/mass susceptibility and relative changes of phase
angle. Basically, the measurements are made in 20, 15 and
10 distinct fields, respectively.
| Besides, short run of this
measurement is possible in reduced number of
distinct fields. In addition, user configuration
of measuring fields is also available. |
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MFK1-FB
and MFK1-B Kappabridges
Static only version
Laboratories under budgetary
constraints may prefer the lower priced static only
models. For the AMS determination, the specimen
susceptibility is measured in 15 different positions
following rotatable design. The positions are changed
manually and, by using special software, the
susceptibility tensor is calculated including the
statistical errors of its determination.
The restricted capability of the static models can be
upgraded later to incorporate the more comfortable
spinner technique.
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Specimens to
be measured For spinning method:
- Cylinder:
(regularly shaped specimens)
- Diameter:
25.4 mm
- Length: 22
mm
- Cube:
20 x 20 x 20 mm
For static method:
- Cylinder: Diameter:
25.4 ± 1 mm
- Length:
22 ± 1mm
- Cube:
20x20x20 mm, 23x23x23 mm
- ODP type:
26x25x19.5 mm
- Fragments: up
to 40 cm3 for bulk susceptibility
SPECIFICATIONS
- Operating
frequency:
MFK1-FA,FB: 976 Hz, 3904 Hz, 15616 Hz
MFK1-A,B: 976 Hz
- Specimen
spinning frequency: 0.5 Hz
- Field
intensity ranges (peak values):
2 A/m - 700 A/m at 976 Hz
2 A/m - 350 A/m at 3904 Hz
2 A/m - 200 A/m at 15616 Hz
- Field
homogeneity: 0.2 %
- Measuring
range automatic: up to 0.5 (SI)
- Sensitivity:
at 976 Hz, 400A/m ....... 2x10-8
(SI)
at 3904 Hz, 200A/m ...... 6x10-8
(SI)
at 15616 Hz, 200A/m ... 12x10-8
(SI)
- Accuracy
within one range: ±0.1%
- Accuracy of
the absolute calibration: ±3%
- Pick-up coil
inner diameter: 43 mm
- Power:
100; 120; 230; 240 V, 50/60 Hz, 40 VA
- Operating
temperature range: +15 to +35°C
- Relative
humidity: up to 80%
- Dimensions,
mass:
measuring unit: 23 x 21 x 12 cm / 4 kg
pick-up unit: 27 x 35 x 32 cm / 11 kg
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