HHS 5201-98 – Circular Helmholtz Coils
The Schwarzbeck HHS 5201-98 Helmholtz Coils are expertly engineered to generate precisely defined magnetic fields across a wide frequency range, from DC up to 200 kHz. With 98 turns and a maximum coil current of 40 A for 1 minute, these coils can achieve magnetic field strengths as high as 64 kA/m for short durations, making them ideal for high-precision calibration of magnetic field probes and sensors. The coils utilize high temperature-proof copper wire, ensuring exceptional durability and reliability even under demanding conditions. The linear relationship between coil current and magnetic field strength allows for accurate field strength calculations using both analytical and numerical methods.
Optimized for various coil spacings, the HHS 5201-98 offers versatile application capabilities. Its compact and lightweight design, with mechanical dimensions of 240 x 240 x 130 mm and a weight of only 4.1 kg, ensures easy integration into diverse testing setups. Perfect for magnetic immunity testing according to automotive standards and MIL-STD-461, this model guarantees exceptional precision and stability. The calibration of the magnetic field is traceable to current measurements, providing reliable and consistent results.
| Number of turns: | 98 |
| Maximum Coil Current: | 40 A (1 min.); 15 A (15 min.) |
| Nominal Coil Current: | 12 A continuous |
| Coil Spacings (centered): | approx. 29 … 95 mm |
| Max. Magn. Field Strength: | 64 kA/m (1 min.) |
| Nominal Magn. Field Strength: | 20 kA/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 1598 A/m |
| Conversion Current-Fieldstrength: | 64.07 dB/m |
| Coil Diameter: | 84 mm (58-110 mm) |
| Free Coil Distance for DuT: | 0 … 66 mm |
| Mechanical Dimensions: | 240 x 240 x 130 mm |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 0.84 mH |
| Inductance (Coil Pair): | 2.3 mH / 30 mm; 2.0 mH / 50 mm; 1.8 mH / 90 mm |
| Usable Frequency Range: | DC – 200 kHz |
| Resonance Frequency: | > 600 kHz |
| Weight: | 4.1 kg |