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.

 

HHS5201-98 Circular Helmholtz-Coil HHS5202-81 Circular Helmholtz-Coil HHS5206-132 Circular Helmholtz-Coil HHS5204-35 Circular Helmholtz-Coil HHS5201-6 Circular Helmholtz-Coil HHS5202-9 Circular Helmholtz-Coil HHS5204-12 Circular Helmholtz-Coil HHS5206-16 Circular Helmholtz-Coil HHS5210-10 Square Helmholtz-Coil HHS5212-10 Square Helmholtz-Coil HHS5215-10 Square Helmholtz-Coil HHS5218-10 Square Helmholtz-Coil HHS5210-100 Square Helmholtz-Coil HHS5213-100 Square Helmholtz-Coil HHS5215-100 Square Helmholtz-Coil HHS5230-100 Square Helmholtz-Coil HHS5213-50 Square Helmholtz-Coil HHS 5206-8 - Circular Helmholtz-Coils

 

HHS 5201-6 - Circular Helmholtz Coils

 
  • Schwarzbeck HHS 5201-6 Helmholtz Coil

 


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

 

Datasheet HHS 5201-6

 

 


 

HHS 5201-98 - Circular Helmholtz Coils

 
  • Schwarzbeck HHS 5201-98 Helmholtz Coil

 

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

 

Datasheet HHS 5201-98

 

 


 

HHS 5202-9 - Circular Helmholtz Coils

 

 

  • HHS 5202-9

 

 

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

 

Datasheet HHS 5202-9

 

 


 

HHS 5202-81 - Circular Helmholtz Coils

 

 

  • HHS 5202-81

 


Number of turns: 81
Maximum Coil Current: 6 A (5 min.)
Nominal Coil Current: 5 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

 

Datasheet HHS 5202-81

 

 


 

HHS 5204-12 - Circular Helmholtz Coils

 
  • HHS 5204-12 - 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): 1.20 µH
Inductance (Coil Pair): 2.40 - 2.60 mH
Usable Frequency Range: DC - 500 kHz
Resonance Frequency: >1.4 MHz

Weight:

10.2 kg

 

Datasheet HHS 5204-12

 

 files for the MagTest software

 


 

HHS 5204-36 - Circular Helmholtz Coils

 
  • HHS5204-36

 

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

 

Datasheet HHS 5204-36

 

 


 

HHS 5206-8 - Circular Helmholtz Coils

 
  • Schwarzbeck HHS5206-16 Helmholtz Coil

 


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

 

Datasheet HHS 5206-8

 

 Recommended accessories:

 

NFCN 9732 85 kHz - Compensation Network

 

The compensation network NFCN 9732 85 kHz consists of a high current/ high voltage variable capacitor.

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.

Application: Immunity test induktive changing 85 kHz

 

Datasheet NFCN 9732 85kHz

 


 

HHS 5206-16 - Circular Helmholtz Coils

 
  • Schwarzbeck HHS5206-16 Helmholtz Coil

 


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

 

Datasheet HHS 5206-16

Security Notes HHS 5206-16

 

 


 

HHS 5206-132 - Circular Helmholtz Coils

 
  • Schwarzbeck HHS5206-16 Helmholtz Coil

 

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

 

Datasheet HHS 5206-132

 

 


 

HHS 5210-10 - Helmholtz Coils

 
  • Schwarzbeck HHS 5210 Helmholtz Coil

 

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

 

Datasheet HHS 5210

 

 


 

HHS 5210-100 - Helmholtz Coils

 
  • Schwarzbeck HHS 5210 Helmholtz Coil

 


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

 

Datasheet HHS 5210-100

 

 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 .

 

Datasheet NFCN 9732-120

 

 


 

HHS 5210-100 2.5 - Helmholtz Coils

 
  • Schwarzbeck HHS 5210 Helmholtz Coil

 

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)

 

Datasheet HHS 5210-100 2.5

 

 


 

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)

 

Datasheet HHS 5212

 

 


 

HHS 5213-50 - Helmholtz Coils

 
  • Schwarzbeck HHS 5213 Helmholtz Coil

 

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

 

Datasheet HHS 5213-50

 

 


 

HHS 5213-100 - Helmholtz Coils

 
  • Schwarzbeck HHS 5213 Helmholtz Coil

 


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

 

Datasheet HHS 5213-100

 

 


 

HHS 5215-10 - Helmholtz Coils

 
  • Schwarzbeck HHS 5215 Helmholtz Coil

 

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): 0.6 mH
Resonance Frequency (Pair of Coils): >400 kHz
Weight: 14 kg
Terminals: 4 mm female

 

Datasheet HHS 5215

 

 


 

HHS 5215-100 - Helmholtz Coils

 
  • Schwarzbeck HHS 5215 Helmholtz Coil

 

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

 

Datasheet HHS 5215-100

 

 


 

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

 

Datasheet HHS 5218

 

 


 

HHS 5230-100 - Helmholtz Coils

 
  • Schwarzbeck HHS 5230-100 3m Helmholtz Coil

 

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

 

Datasheet HHS 5230-100

pdficon small Assembly HHS 5230-100

 

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.

 

Datasheet NFCN 9731-100