Helmholtz Coils
Helmholtz-Coils are especially designed to generate precisely defined magnetic fields from DC to the upper end of the audio frequency range and beyond. The generated fields are in a strongly linear relation to the coil current. The field- strength can be calculated exactly by analytical (or numerical) methods, based on the coils’ geometry, the number of turns and the coil current.
Therefore Helmholtz-Coils are ideally suited for the calibration of magnetic field probes or sensors. Typical applications are magnetic immunity testing according to automotive standards or MIL-461F.
When generating magnetic fields with Helmholtz coils the coil current is directly proportional to the magnetic field strength.
HHS 5201-6 – Circular Helmholtz Coils
| Number of turns: | 6 |
| Maximum Coil Current: | 40 A (1 min.) |
| 15 A (15 min.) | |
| Nominal Coil Current: | 12 A continuous |
| Coil Spacings (centered): | 50 … 80 mm |
| The following data refers to a coil separation of 60 mm | |
| Max. Magn. Field Strength: | 2860 A/m (1 min.) |
| Nominal Magn. Field Strength: | 860 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 71.55 A/m |
| Coil Diameter: | 120 mm |
| Mechanical Dimensions: | 290 x 220 x 130 mm |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 8 µH |
| Inductance (Coil Pair): | 18.7 µH / 50 mm |
| 18.2 µH / 60 mm | |
| 17.9 µH / 70 mm | |
| Usable Frequency Range: | DC – 5 MHz |
| Resonance Frequency: | > 8 MHz |
| Weight: | 2.8 kg |
HHS 5201-98 – Circular Helmholtz Coils
| 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 |
HHS 5202-9 – Circular Helmholtz Coils
| Number of turns: | 9 |
| Maximum Coil Current: | 55 A (5 min.) |
| Nominal Coil Current: | 33 A continuous |
| Coil Spacings (centered): | 116 mm / 132 mm |
| The following data refers to a coil separation of 116 mm | |
| Max. Magn. Field Strength: | 3053 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1832 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 55.52 A/m |
| 154.89 dBµA/m | |
| Coil Diameter: | 232 mm |
| Mechanical Dimensions: | 0.20 m x 0.25 m x 0.39 m |
| Max. cubical shaped DuT: | 11.3 cm x 11.3 cm x 11.3 cm |
| Terminals: | 4 mm female jacks |
| 7 mm screw terminals | |
| Inductance (Single Coil): | 36 µH |
| Inductance (Coil Pair): | 80 µH |
| Usable Frequency Range: | DC – 2.5 MHz |
| Resonance Frequency: | > 3.5 MHz |
| Weight: | 4.9 kg |
HHS 5202-81 – Circular Helmholtz Coils
| Number of turns: | 81 |
| Maximum Coil Current: | 6 A (5 min.) |
| Nominal Coil Current: | 4 A continuous |
| Coil Spacings (centered): | 116 mm / 132 mm |
| The following data refers to a coil separation of 116 mm | |
| Max. Magn. Field Strength: | 3000 A/m (5 min.) |
| Nominal Magn. Field Strength: | 2000 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 500A/m |
| 174 dBµA/m | |
| Coil Diameter: | 232 mm |
| Mechanical Dimensions: | 0.20 m x 0.25 m x 0.39 m |
| Max. cubical shaped DuT: | 11.3 cm x 11.3 cm x 11.3 cm |
| Terminals: | 4 mm female |
| 7 mm screw terminals | |
| Inductance (Single Coil): | 2.83 mH |
| Inductance (Coil Pair): | 6.42 mH |
| Usable Frequency Range: | DC – 300 kHz |
| Resonance Frequency: | > 400 kHz |
| Weight: | 4.7 kg |
HHS 5203-536 – Circular Helmholtz Coils
| Number of turns: | 536 |
| Maximum Coil Current: | 15 A (5 min.) |
| Nominal Coil Current: | 5 A continuous |
| Coil Spacings (centered): | 143 mm |
| Max. Magn. Field Strength: | 42 kA/m (5 min.) |
| Nominal Magn. Field Strength: | 14 kA/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 2780 A/m |
| 188.9 dBµA/m | |
| Conversion Current-Fieldstrength (Coil factor): | 68.9 dB/m |
| Coil Diameter: | 256 mm |
| Mechanical Dimensions: | 0.41 m x 0.32 m x 0.25 m |
| Terminals: | 4 mm banana jacks Screw terminals |
| Inductance (Single Coil): | typ. 82 mH @ 50 Hz |
| Inductance (Coil Pair): | typ. 188 mH @ 50 Hz |
| Usable Frequency Range: | DC – 2 kHz |
| Resistance (per coil): | 2.75W |
| Coil capacitance (pair of coils): | ~0.8 nF |
| Resonance Frequency (pair of coils): | > 10 kHz (typ. 13 kHz) |
| Weight: | 35 kg |
HHS 5204-12 – Circular Helmholtz Coils
| Number of turns: | 12 |
| Maximum Coil Current: | 60 A (5 min.) |
| Nominal Coil Current: | 30 A continuous |
| Coil Spacings: | 200 mm, 250 mm, 300 mm |
| The following data corresponds to a coil spacing of 200 mm | |
| Max. Magn. Field Strength: | 2500 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1288 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 42.93 A/m |
| 152.66 dBµA/m | |
| Conversion Current->Fieldstrength: | 32.66 dB/m |
| Coil Diameter: | 400 mm |
| Mechanical Dimensions: | 0.38 m x 0.58 m x 0.42 m |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 120 µH |
| Inductance (Coil Pair): | 240 – 260 µH |
| Usable Frequency Range: | DC – 500 kHz |
| Resonance Frequency: | >1.4 MHz |
| Weight: | 10.2 kg |
HHS 5204-36 – Circular Helmholtz Coils
| Number of turns: | 36 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Coil Spacings: | 200 mm, 250 mm, 300 mm |
| The following data corresponds to a coil spacing of 200 mm | |
| Max. Magn. Field Strength: | 2500 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1288 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 128.8 A/m |
| 162.2 dBµA/m | |
| Conversion Current->Fieldstrength: | 42.2 dB/m |
| Coil Diameter: | 400 mm |
| Mechanical Dimensions: | 0.38 m x 0.58 m x 0.42 m |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 1.15 mH |
| Inductance (Coil Pair): | 2.56 mH |
| Usable Frequency Range: | DC – 150 kHz |
| Resonance Frequency: | >200 kHz |
| Weight: | 8.5 kg |
HHS 5206-4 – Circular Helmholtz Coils
| Number of turns: | 4 |
| Maximum Coil Current: | 55 A (5 min.) |
| Nominal Coil Current: | 34 A continuous |
| Coil Spacings (centered): | 300 mm |
| Max. Magn. Field Strength: | 530 A/m (5 min.) |
| Nominal Magn. Field Strength: | 330 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 9.64 A/m |
| 139.68 dBµA/m | |
| Coil Diameter: | 584 mm |
| Max. Cubical shaped DuT: | 32.5 x 32.5 x 32.5 cm |
| Mechanical Dimensions: | 0.64 m x 0.79 m x 0.42 m |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 24 µH |
| Inductance (Coil Pair): | 52 µH |
| Usable Frequency Range: | DC – 1.5 MHz |
| Resonance Frequency: | > 3 MHz |
| Weight: | 17 kg |
HHS 5206-8 – Circular Helmholtz Coils
| Number of turns: | 8 |
| Maximum Coil Current: | 55 A (5 min.) |
| Nominal Coil Current: | 34 A continuous |
| Coil Spacings (centered): | 300 mm |
| Max. Magn. Field Strength: | 1060 A/m (5 min.) |
| Nominal Magn. Field Strength: | 650 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 19.23 A/m |
| 145.68 dBµA/m | |
| Coil Diameter: | 600 mm |
| Max. Cubical shaped DuT: | 32.5 x 32.5 x 32.5 cm |
| Mechanical Dimensions: | 0.64 m x 0.79 m x 0.42 m |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 91 µH |
| Inductance (Coil Pair): | 200 µH |
| Usable Frequency Range: | DC – 800 kHz |
| Resonance Frequency: | > 1500 kHz |
| Weight: | 17.0 kg |
| Recommended accessories: | NFCN 9732 85 kHz |
Recommended accessories:
NFCN 9732 85 kHz – Compensation Network
The compensation capacitor reduces the total impedance of the series circuitry consisting of the Helmholtz coil HHS 5206-8 and the NFCN 9732 85 kHz at the operating frequency band of 80-90 kHz. It allows continuous currents of up to 15 Arms at generator voltages of less than 40 Vrms.
The compensation network NFCN 9732 85 kHz consists of a high current/ high voltage variable capacitor.
Application: Immunity test inductive charging 85 kHz
HHS 5206-16 – Circular Helmholtz Coils
| Number of turns: | 16 |
| Maximum Coil Current: | 55 A (5 min.) |
| Nominal Coil Current: | 33 A continuous |
| Coil Spacings (centered): | 300 mm |
| Max. Magn. Field Strength: | 2100 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1260 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 38.17 A/m |
| 151.63 dBµA/m | |
| Coil Diameter: | 600 mm |
| Max. Cubical shaped DuT: | 32.5 x 32.5 x 32.5 cm |
| Mechanical Dimensions: | 0.64 m x 0.79 m x 0.42 m |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 340 µH |
| Inductance (Coil Pair): | 750 µH |
| Usable Frequency Range: | DC – 500 kHz |
| Resonance Frequency: | > 700 kHz |
| Weight: | 20.4 kg |
HHS 5206-25 – Circular Helmholtz Coils
| Number of turns: | 25 |
| Maximum Coil Current: | 46 A (5 min.) |
| Nominal Coil Current: | 28 A continuous |
| Coil Spacings (centered): | 300 mm |
| Max. Magn. Field Strength: | 2700 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1600 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 59.64 A/m |
| 155.51 dBµA/m | |
| Coil Diameter: | 600 mm |
| Max. Cubical shaped DuT: | 32.5 x 32.5 x 32.5 cm |
| Mechanical Dimensions: | 0.64 m x 0.79 m x 0.42 m |
| Terminals: | 4 mm female |
| Inductance (Single Coil): | 0.81 mH |
| Inductance (Coil Pair): | 1.82 mH |
| Usable Frequency Range: | DC – 300 kHz |
| Resonance Frequency: | > 400 kHz |
| Weight: | 19.4 kg |
HHS 5206-132 – Circular Helmholtz Coils
| Number of turns: | 132 |
| Maximum Coil Current: | 15 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Coil Spacings (centered): | 300 mm |
| Max. Magn. Field Strength: | 4713 A/m (5 min.) |
| Nominal Magn. Field Strength: | 3142 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 314.2 A/m |
| 169.97 dBµA/m | |
| Coil Diameter: | 600 mm |
| Max. Cubical shaped DuT: | 32.5 x 32.5 x 32.5 cm |
| Mechanical Dimensions: | 0.64 m x 0.79 m x 0.42 m |
| Terminals: | 4 mm banana jacks |
| screw terminals | |
| Inductance (Single Coil): | 22.4 mH |
| Inductance (Coil Pair): | 49.9 mH |
| Usable Frequency Range: | DC – 30 kHz |
| Resonance Frequency: | > 50 kHz |
| Weight: | 27.5 kg |
HHS 5210-10 – Helmholtz Coils
| Number of turns: | 10 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Max. Magn. Field Strength: | 300 A/m (5 min.) |
| Nominal Magn. Field Strength: | 150 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 15 A/m (Coil Dist. 0.4 m) |
| Mechanical Dimensions: | 1.0 x 1.0 x 0.63 m |
| Coil Separation acc. IEC 1000-4-8: | 0.40 m |
| Coil Separation for best uniformity: | 0.57 m |
| Terminals: | 4 mm female |
| Inductance (per Coil): | 0.36 mH |
| Usable Frequency Range: | DC – 150 kHz |
| Resonance Frequency: | > 600 kHz |
| Weight: | 10 kg |
HHS 5210-100 – Helmholtz Coils
| Number of turns: | 100 |
| Maximum Coil Current: | 15 A (5 min.) |
| Nominal Coil Current: | 9 A continuous |
| Inner side length of the coil: | 1.0 m |
| Electrical side length of the coil: | 1.04 m |
| Maximum Coil Separation: | 0.70 m |
| Usable Frequency Range: | DC – 10 kHz |
| Inductance (per Coil): | 31.3 mH |
| Resonance Frequency (Pair of Coils): | >25 kHz |
| Weight: | 36.5 kg |
| Terminals: | 4 mm female |
| The following data is valid for 0.4 m coil distance: | |
| Coil Separation acc. IEC 1000-4-8: | 0.40 m |
| Max. Magn. Field Strength: | 2183 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1310 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 145.54 A/m (Coil Dist. 0.4 m) |
| The following data is valid for 0.566 m coil distance: | |
| Coil Separation for best uniformity along an axes through the coil center: | 0.566 m |
| Magn. Field Strength, 1 A Coil Current: | 124.66 A/m (Coil Dist. 0.566 m) |
| Recommended Accessories: | NFCN 9732-120 |
Recommended accessories:
NFCN 9732-120 – Compensation Network
The compensation network NFCN 9732-120 consists of a capacitor and a fuse in series. It is used for a series compensation of the HHS 5210-100 at energetical mains frequencies of 50 Hz to 60 Hz.
The compensation capacitor reduces the total impedance of the series circuitry consisting of the Helmholtz coils HHS 5210-100 and the NFCN 9732-120 at the operating frequencies of 50 to 60 Hz. It allows continuous currents of up to 8 A rms at generator voltages of less than 70 Vrms …80 Vrms
HHS 5210-100 2.5 – Helmholtz Coils
| Number of turns: | 100 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 15 A continuous |
| Inner side length of the coil: | 1.0 m |
| Electrical side length of the coil: | 1.04 m |
| Maximum Coil Separation: | 0.70 m |
| Usable Frequency Range: | DC – 10 kHz |
| Inductance (per Coil): | 31.3 mH |
| Resonance Frequency (Pair of Coils): | >25 kHz |
| Weight: | 56 kg |
| Terminals: | 4 mm female |
| The following data is valid for 0.4 m coil distance: | |
| Coil Separation acc. IEC 1000-4-8: | 0.40 m |
| Max. Magn. Field Strength: | 2900 A/m (5 min.) |
| Nominal Magn. Field Strength: | 1746 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 145.54 A/m (Coil Dist. 0.4 m) |
| The following data is valid for 0.566 m coil distance: | |
| Coil Separation for best uniformity along an axes through the coil center: | 0.566 m |
| Magn. Field Strength, 1 A Coil Current: | 124.66 A/m (Coil Dist. 0.566 m) |
HHS 5212-10 – Helmholtz Coils
| Number of turns: | 10 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Maximum Coil Separation: | 0.70 m |
| Usable Frequency Range: | DC – 150 kHz |
| Inductance (per Coil): | 0.45 mH |
| Resonance Frequency (Pair of Coils): | >500 kHz |
| Weight: | 12 kg |
| Terminals: | 4 mm female |
| Coil Separation acc. IEC 1000-4-8: | 0.48 m |
| Coil Separation for best uniformity: | 0.68 m |
| Max. Magn. Field Strength: | 250 A/m (5 min.) |
| Nominal Magn. Field Strength: | 125 A/m continuous |
| Magn. Field Strength, 1 A Coil Current: | 12.45 A/m (Coil Dist. 0.48 m) |
HHS 5213-50 – Helmholtz Coils
| Number of turns: | 50 |
| Maximum Coil Current: | 8 A (5 min.) |
| Nominal Coil Current: | 5 A continuous |
| Max. Magn. Field Strength: | 390 A/m (5 min.) |
| Nominal Magn. Field Strength: | 240 A/m continuos |
| Magn. Field Strength, 1 A Coil Current: | 48.5 A/m (coil Dist. 0.75 m) |
| Coil Separation acc. IEC 1000-4-8: | 0.75 m |
| Maximum Coil Separation: | 0.82 m |
| Mechanical Dimensions: | 1.36 m x 1.36 m x 0.9 m |
| Usable Frequency Range: | DC – 20 kHz |
| Inductance (per Coil): | 10.5 mH |
| Resonance Frequency (Pair of Coils): | >30 kHz |
| Weight: | 18 kg |
| Terminals: | 4 mm female |
HHS 5213-100 – Helmholtz Coils
| Number of turns: | 100 |
| Maximum Coil Current: | 15 A (5 min.) |
| Nominal Coil Current: | 9 A continuous |
| Nominal Magn. Field Strength: | 900.9 A/m continuos |
| Magn. Field Strength, 1 A Coil Current: | 100.096 A/m (coil Dist. 0.705 m) |
| Maximum Coil Separation: | 0.83 m |
| Mechanical Dimensions: | 1.46 m x 1.36 m x 0.91 m |
| Usable Frequency Range: | DC – 5 kHz |
| Inductance (Coil pair): | 88.3 mH (Coil Dist. 0.705 m) |
| Resonance Frequency (Pair of Coils): | >13 kHz |
| Weight: | 44.5 kg |
| Terminals: | 4 mm female |
HHS 5215-10 – Helmholtz Coils
| Number of turns: | 10 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Max. Magn. Field Strength: | 200 A/m (5 min.) |
| Nominal Magn. Field Strength: | 100 A/m continuos |
| Magn. Field Strength, 1 A Coil Current: | 9.96 A/m (coil Dist. 0.6 m) |
| Coil Separation acc. IEC 1000-4-8: | 0.6 m |
| Maximum Coil Separation: | 0.86 m |
| Mechanical Dimensions: | 1.5 m x 1.5 m x 0.9 m |
| Usable Frequency Range: | DC – 100 kHz |
| Inductance (Coil pair): | 1.3 mH |
| Resonance Frequency (Pair of Coils): | >400 kHz |
| Weight: | 14 kg |
| Terminals: | 4 mm female |
HHS 5215-100 – Helmholtz Coils
| Number of turns: | 100 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Max. Magn. Field Strength: | 2000 A/m (max. 5 min., dist. 0.84 m*) |
| Nominal Magn. Field Strength: | 842 A/m continuos |
| Magn. Field Strength, 1 A Coil Current: | 84.2 A/m (coil dist. 0.84 m*) |
| Maximum Coil Separation: | 0.93 m* |
| Mechanical Dimensions: | 1.69 m x 1.60 m x 1.00 m |
| Usable Frequency Range: | DC – 6 kHz |
| Inductance (Coil pair): | 112 mH |
| Resonance Frequency (Pair of Coils): | >20 kHz |
| Weight: | 53 kg |
| Terminals: | 4 mm female |
HHS 5218 – Helmholtz Coils
| Number of turns: | 10 |
| Maximum Coil Current: | 20 A (5 min.) |
| Nominal Coil Current: | 10 A continuous |
| Max. Magn. Field Strength: | 126 A/m (5 min.) |
| Nominal Magn. Field Strength: | 63 A/m continuos |
| Magn. Field Strength, 1 A Coil Current: | 6.26 A/m (coil Dist. 1.2 m) |
| Coil Separation acc. IEC 1000-4-8: | 0.72 m |
| Maximum Coil Separation: | 1.25 m |
| Coil Separation for best uniformity: | 1.20 m |
| Mechanical Dimensions: | 1.8 m x 1.8 m x 1.2 m |
| Usable Frequency Range: | DC – 100 kHz |
| Resonance Frequency (Pair of Coils): | >400 kHz |
| Weight: | 17 kg |
| Terminals: | 4 mm female |
HHS 5230-100 – Helmholtz Coils
The Helmholtz-Coil HHS 5230-100 are especially designed to generate precisely defined magnetic fields from DC to ca. 5 kHz, e.g. according to SAE J551-17.
Typical applications are magnetic immunity testing to whole vehicles according to SAEJ551-17 (Vehicle Electromagnetic Immunity – Power Line Magnetic Fields).
| Number of turns: | 100 |
| Maximum Coil Current: | 16 A (5 min.) |
| Nominal Coil Current: | 8 A continuous |
| Max. Magn. Field Strength: | 650 A/m @ coil Dist. =1.8 m |
| Nominal Magn. Field Strength: | 325 A/m @ coil Dist. = 1.8 m |
| Magn. Field Strength, 1 A Coil Current: | 50.8 A/m (coil Dist. 1.13 m) |
| Maximum Coil Separation: | >1.13 m |
| Coil Separation for best uniformity: | 1.8 m |
| Mechanical Dimensions: | W:2.0 m x H:3.10 m x B:3.18 m |
| Ground Clearence: | 0.12 m |
| Usable Frequency Range: | DC – 5 kHz |
| Resonance Frequency (per Coil): | >10 kHz, typ. 13 kHz |
| Weight (per Coil): | 190 kg |
| Recommended Accessories: | NFCN 9731-100 |
Recommended Accessories:
NFCN 9731-100 – Compensation Network
The primary function of the compensation network NFCN 9731-100 is to provide a serial compensation of the inductance of i.e. the HHS 5230-100 at operation frequencies of 16.666 Hz, 50 Hz, 60 Hz, 150 Hz und 180 Hz. These operation frequencies are stipulated by SAE J551 – 17 (Vehicle Electromagnetic Immunity – Power Line Magnetic Fields).
The compensation capacitor reduces th e overall impedance of the series circuit consisting of the Helmholtz coil HHS 5230-100 and the compensation network NFCN 9731-100 at the applied operating frequency and allows currents up to 8 Arms at a generator voltage of less than 60 Vrms.
HHS 3D 5213-50 – 3D Helmholtz-Coil
With the three-dimensional Helmholtz coil HHS 3D 5213-50 it is possible to create any vector field.
| Number of turns (per Coil) | 50 |
| Maximum Coil Current: | 8 A (5 min.) |
| Nominal Coil Current: | 5 A continuos |
| Maximum Magnetic Field Strength: | 390 A/m |
| Nominal Magnetic Field Strength: | 240 A/m continuos |
| Dimensions: | 1.4 m x 1.4 m x 1.3 m |
| Frequency Range: | DC – 20 kHz |
| Resonant Frequency (per Coil): | > 30 kHz |
| Weight: | ca. 85 kg |
| Inner Coil (Y-Axis) | |
| Effective Coil Dimensions: | 1.1 m x 1.1 m |
| Coil Separation acc. EN 55103: | 62 cm |
| Magnetic Field Strength, 1 A: | 57.7 A/m |
| Resistance (Coil pair): | 3.0 Ω |
| Inductance (Coil pair): | 19.08 mH (Coil Dist. 0.62 m) |
| Center Coil (X-Axis) | |
| Effective Coil Dimensions: | 1.21 m x 1.21 m |
| Coil Separation acc. EN 55103: | 68 cm |
| Magnetic Field Strength, 1 A: | 52.5 A/m |
| Resistance (Coil pair): | 3.3 Ω |
| Inductance (Coil pair): | 21.3 mH (Coil Dist. 0.68 m) |
| Outer Coil (Z-Axis) | |
| Effective Coil Dimensions: | 1.32 m x 1.32 m |
| Coil Separation acc. EN 55103: | 74 cm |
| Magnetic Field Strength, 1 A: | 48.2 A/m |
| Resistance (Coil pair): | 3.6 Ω |
| Inductance (Coil pair): | 23.58 mH (Coil Dist. 0.74 m) |