Helmholtz Coils are especially designed to generate precisely defined magnetic fields from DC to ca. 3 kHz. The generated fields are in a strongly linear relation to the coil current. The fieldstrength can be calculated exactly by analytical (or numerical) methods, based on the coil’s geometry, the number of turns and the coil current. The calibration of the magnetic field is finally traceable to a current measurement (or to a voltage drop at a known resistor). The Helmholtz Coil itself is usually considered as primary standard due to the easily calculable relation between current and field strength. If this relation should be controlled, a loop sensor (only AC) or a Hall probe (DC- and AC- field) can be used to determine the actual field strength. A short set of connecting cables is included in the scope of delivery.
| Number of turns: | 100 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Max. Magn. Field Strength: | 1728 A/m (5 min.) |
| Nominal Magn. Field Strength: | 706.3 A/m continuos |
| Magn. Field Strength, 1 A Coil Current: | 70.63 A/m (coil Dist. 1 m) |
| Maximum Coil Separation: | 1.2 m |
| Mechanical Dimensions: | 2.00 m x 1.91 m x 1.27 m |
| Usable Frequency Range: | DC – 3 kHz |
| Resonance Frequency (Pair of Coils): | >8 kHz |
| Weight: | 60 kg |
Datasheet HHS 5218-100
