The BCK1 is a laboratory instrument specifically designed to measure the magnetic susceptibility and anisotropy of magnetic susceptibility of samples larger than standard paleomagnetic cylinders or cubes. The instrument offers accurate measurement of both in-phase and out-of-phase components of magnetic susceptibility and the ability to measure over a range of magnetic field intensities from 5 to 600 A/m. With a coil inner diameter of 84 mm, the magnetic susceptibility anisotropy can be measured for cylinders up to two inches in diameter and cubes up to 48 mm in edge diameter. Rock fragments and powders can be measured up to a volume of approx. 200 ccm.
Data acquisition software Safyr controls all particular functions of the Kappabridges, calculate results of individual measurements as well as advanced statistics on measured data. Standard visualisation of the results is also incorporated. For more in-depth analysis of AMS AGICO provides Anisoft - advanced software for processing of AMS datasets.
| ■ | Measurement of in-phase and out-of-phase susceptibility |
| ■ | Anisotropy of magnetic susceptibility (15 direction manual mode) |
| ■ | High sensitivity |
| ■ | High sensitivity of phase determination |
| ■ | Fully automatic zeroing system |
| ■ | Measurement in variable fields |
| ■ | Enhanced resistance to power lines noise |
| ■ | Galvanically isolated USB connection |
| ■ | Sophisticated software support |
| Operating frequency | 1220 Hz |
| Field intensity range | 5 - 600 A/m (peak) |
| Field homogeneity | 0.5 % |
| Accuracy within one range | ±0.1 % |
| Accuracy of absolute calibration | ±3 % |
| Pick-up coil inner diameter | 84 mm |
| Power requirements | 100 - 240 V, 50/60 Hz, 40 VA |
| AMS measurements | |
| Cylinder (regularly shaped specimens) | |
| Diameter | up to 51 mm |
| Length | up to 46.0 mm |
| Cube | up to 48x48x48 mm |
| Bulk susceptibility | |
| Cylinders | Up to 82 mm in diameter |
| Cubes | up to 58x58x58 mm |
| Fragments | up to 200 cm3 for bulk susceptibility |
Kappabrige comparison in more detail can be found here.
| MFK2-FA | MFK2-FB | KLY5-A | KLY5-B | |
| Bulk susceptibility | ✔ | ✔ | ✔ | ✔ |
| Anisotropy of magnetic susceptibility | ✔ automatic |
✔ manual |
✔ automatic |
✔ manual |
| Field variations of bulk susceptibility | ✔ automatic |
✔ manual |
✔ automatic |
✔ manual |
| Field variations of anisotropy of susceptibility | ✔ automatic with 3D Rotator |
✔ manual |
✔ automatic with 3D Rotator |
✔ manual |
| Frequency variations of bulk susceptibility | ✔ | ✔ | ✖ | ✖ |
| Frequency variations of anisotropy of susceptibility | ✔ semi-automatic |
✔ manual |
✖ | ✖ |
| High-temperature variations of bulk susceptibility | ✔ in combination with CS4 |
✖ | ✔ in combination with CS4 |
✖ |
| Low-temperature variations of bulk susceptibility | ✔ in combination with CS4 and CS-L |
✖ | ✔ in combination with CS4 and CS-L |
✖ |
| Absolute out-of phase susceptibility | ✖ | ✖ | ✔ | ✔ |
| Relative changes out-of phase susceptibility | ✔ lower precision |
✔ lower precision |
✔ higher precision |
✔ higher precision |
Last update >>> 09/2026