Reliant EMC

Helmholtz Coils

Helmholtz Coils
HS 5136 - Hall-Sensor
HHS 5201-98 Helmholtz Coils
HHS 5201-6 Helmholtz Coils
HHS 5202-81 - Circular Helmholtz Coil
HHS 5202-9 - Circular Helmholtz Coils
HHS 5203-20 Helmholtz Coils - Build To Order ONly
HHS 5204-36 Helmholtz Coils
HHS 5204-12 Helmholtz Coils
HHS 5204 Helmholtz Coils For Calibration Purposes - Build To Order ONly
HHS 5206-8 - Circular Helmholtz Coils
HHS 5206-16 Circular Pair Of Helmholtz Coils
HHS 5206-132 Schwarbeck Circular Helmholtz Coil
HHS 5210 Helmholtz Coils
HHS 5210-100 Helmholtz Coils
HHS 5210-100 2.5 - Helmholtz Coils
HHS 5212 Helmholtz Coils
HHS 5213 Helmholtz Coils
HHS 5213-100 Helmholtz Coils
HHS 5215 Helmholtz Coils
HHS 5215-100 Helmholtz Coils
HHS 5218 Helmholtz Coils
HHS 5230-100 Pair Of Helmholtz Coils
NFCN 9731-100 Matching Network
NFCN 9732 Compensation Network

 

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.

 

Magnetic Field Distrubance Tests
The tests against magnetic field disturbances can be classified in two categories:
· DC testing: in this case the field doesn´t change with the frequency. In DC testing the maximum fields are in the order of 3000-4000 A/m. In DC testing you must use dedicated radiating loops or Helmholtz coils (FESP 5133-1330 can be only used in DC testing). In DC Testing you need a radiating loop or an Helmholtz coil, DC power supply and Hall sensor.
· AC testing: in this case the field changes with the frequency.
In AC testing the maximum fields are in the order of ~1000 A/m.
In AC testing you must use dedicated radiating loops or Helmholtz coils (FESP 5132, HHS 5206-16 for example). In AC testing you need a radiating loop or an Helmholtz coil, RF amplifier LFPA 9733, SHUNT, compensation network NFCN 9734 and monitoring loops.
 
To determine which coils are required, the following information must be provide the sizes of the device under test (DuT).
For DC testing: maximum field to be reached (3000 A/m, 4000 A/m?).
For AC testing the customer must check the attached document and inform us about the normative that they are using. Each normative gives a well defined field as a function of the frequency. When we will have these information, we can design a system.

 

Schwarzbeck Helmholtz Coils Chart

 

HS 5136 - Hall-Sensor
The hall probe HS 5136 can be used to measure magnetic field strengths for immunity tests according to MIL STD 461 and various automotive standards. It measures static and dynamic magnetic fields with a field strength up to 8000 A/m. The HS 5136 is a transverse probe, i.e. the magnetic flux lines must be orthogonal to the longitudinal probe axis and orthogonal to the surface of the hall-element to obtain the maximum reading.
Nominal frequency range:
DC - 10 kHz
Useable frequency range:
DC - 200 kHz
 
Nominal measuring range:
0 - 7000 A/m
 
Extended measuring range:
0 - 8000 A/m
 
Nominal conversion factor:
1 (A/m)/mV
 
Load impedance:
>2 kΩ
 
Non-linearity.:
0.8 %
 
Power supply:
+(27 - 33) V / 50 mA
 
Housing:
Aluminium
 
Dimensions:
ca. 470 x 42 x 28 mm
 
Mounting:
22 mm Tube
 
Weight:
310 g
 
Connector:
BNC-female
 
 
HS 5136 Hall Sensor for Magnetic Field Measurements Data Sheet

 

HHS 5201-98 Helmholtz Coils
Schwarzbeck HHS 5201-98  Helmholtz Coil
· Helmholtz Coils circular up to 64 kA/m
· 200 kHz for DuT size 45 mm
 

Schwarzbeck Circular Helmholtz Coils HHS 5201-98 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5201-98 Data Sheet

HHS 5201-6 Helmholtz Coils
· Helmholtz Coils circular up to 2860 A/m
· 5 MHz for DuT size 45 mm
 

Schwarzbeck Circular Helmholtz Coils HHS 5201-6 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5201-6 Data Sheet

HHS 5202-81 - Circular Helmholtz Coil
HHS 5202-81 Circular Helmholtz Coil
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 the HHS 5202-81 is ideally suited for the calibration of magnetic field probes or sensors. Due to the high temperature proof copper wire packet it is possible to generate magnetic fields up to approx. 3000 A/m for short times. Typical applications are magnetic immunity testing according to automotive standards or MIL-461. When generating magnetic fields with Helmholtz coils the coil current is directly proportional to the magnetic field strength.
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
 

 

Schwarzbeck HHS 5202-81 Circular Helmhotz Coil Data Sheet

 

HHS 5202-9 - Circular Helmholtz Coils
Schwarzbeck HHS 5202-9  Helmholtz Coil
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 the HHS 5202-9 is ideally suited for the calibration of magnetic field probes or sensors. Due to the high temperature proof copper wire packet it is possible to generate magnetic fields up to approx. 3000 A/m for short times. Typical applications are magnetic immunity testing according to automotive standards or MIL-461. When generating magnetic fields with Helmholtz coils the coil current is directly proportional to the magnetic field strength.

 

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
 

 

Schwarzbeck Maximum Magnetic Field Strenght of HHS 5202-9 with LFPA 9733Schwarzbeck Maximum Magnetic Field Strenght of HHS 5202-9 with LFPA 9733

Schwarzbeck HSS 5202-9 Circular Helmhotz Coil Data Sheet

 

pdficon small Schwarzbeck Overview MagTest-System combinations for Immunity Testing Data sheet

 

HHS 5203-20 Helmholtz Coils - Build To Order ONly
Schwarzbeck HHS 5203-20
· Helmholtz Coils
· circular
· Diameter 300 mm
· 330 A/m for Calibration or Immunity
 

Schwarzbeck Circular Helmholtz Coils HHS 5203-20 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5203-20 Data Sheet

HHS 5204-36 Helmholtz Coils
Schwarzbeck HHS 5204-36  Helmholtz Coil
· Helmholtz Coils
· circular
· diam. 400 mm
· 2500 A/m
· 150 kHz
· MIL-STD 461E

 

Schwarzbeck Circular Helmholtz Coils HHS 5204-36 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5204-36 Data Sheet

HHS 5204-12 Helmholtz Coils
Schwarzbeck HHS 5204-12  Helmholtz Coil
· Helmholtz Coils
· circular
· diam. 400 mm
· 2500 A/m
· 500 kHz
· MIL-STD 461E
 

Schwarzbeck Circular Helmholtz Coils HHS 5204-12 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5204-12 Data Sheet

Files for the MagTest Software files for the MagTest software

HHS 5204 Helmholtz Coils For Calibration Purposes - Build To Order ONly
· Helmholtz Coils for Calibration purposes
· circular
· diam. 420 mm
· 5 turns f. 60 A/m  
 

Schwarzbeck Circular Helmholtz Coils HHS 5204 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5204 Data Sheet

 

HHS 5206-8 - Circular 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
 
 

Schwarzbeck Circular Helmholtz Coils HHS 5204 Data Sheet Schwarzbeck HHS 5206-8 - Circular Helmholtz Coil Data Sheet

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
 
 pdficon small Schwarzbeck NFCN 9732 85 kHz - Compensation Network Data Sheet

 

HHS 5206-16 Circular Pair Of Helmholtz Coils
Schwarzbeck HHS 5206-16  Helmholtz Coil
· Circular pair of Helmholtz coils
· diameter 600 mm
· up to 2100 A/m
· max. current 55 A
 

Schwarzbeck Circular Helmholtz Coils HHS 5206-16 Data Sheet Schwarzbeck Circular Helmholtz Coils HHS 5206-16 Data Sheet

 

HHS 5206-132 Schwarbeck Circular Helmholtz Coil
Schwarbeck Circular Helmholtz Coil HHS 5206-132
Schwarbeck Circular Helmholtz Coil HHS 5206-132
 
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 fieldstrength can be calculated exactly by analytical (or numerical) methods, based on the coils' geometry, the number of turns and the coil current. Therefore the HHS 5206-132 is 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. 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 or monitoring loop can be used to determine the actual field strength.

 

Specifications
 
Number of turns (per Coil):
132
Maximum coil current:
15 A, 5 min.
Nominal coil current:
10 A continuous
Coil spacing:
300 mm
Maximum magnetic field strength:
4713 A/m, 5 min.
Nominal magnetic field strength:
3142 A/m continuous
Magnetic field strength @ 1 A Coil Current:
314.2 A/m
169.97 dBµA/m
Current required for 1 A/m:
3.183 mA
Conversion Current- Field strength (Coil factor):
50 dB/m
Coil diameter:
600 mm
Mechanical dimensions:
0.64 m x 0.79 m x 0.42 m
Max. cubical shaped DuT:
32.5x32.5x32.5 cm
Terminals:
4 mm banana jacks
Screw terminals
Usable frequency range:
DC - 30 kHz
Inductance (per coil):
22.4 mH
Inductance (pair of coils):
49.9 mH
Resistance by 20°C (per coil):
1.42
Resistance by 120°C (per coil):
1.96
Coil capacitance (pair of coils):
174 pF
Resonance frequency (Pair of coils):
> 50 kHz
Weight:
27.5 kg

 

Schwarzbeck Helmholtz Coils HHS 5210 Data Sheet Schwarbeck Circular Helmholtz Coil HHS 5206-132 Data Sheet

 

HHS 5210 Helmholtz Coils
Schwarzbeck HHS 5210  Helmholtz Coil
· Helmholtz Coils
· up to 300 A/m constant H field
· 1 m x 1 m
· 10 turns per coil
· EN 61000-4-8, VDE 0847 part 4-8
 

Schwarzbeck Helmholtz Coils HHS 5210 Data Sheet Schwarzbeck Helmholtz Coils HHS 5210 Data Sheet

HHS 5210-100 Helmholtz Coils
Schwarzbeck HHS 5210-100  Helmholtz Coil
· Helmholtz Coils
· up to 2183 A/m constant H field
· 1 m x 1 m
· 100 turns per coil
· EN 61000-4-8, VDE 0847 part 4-8
 

Schwarzbeck Helmholtz Coils HHS 5210-100 Data Sheet Schwarzbeck Helmholtz Coils HHS 5210-100 Data Sheet

HHS 5210-100 2.5 - Helmholtz Coils
Schwarzbeck HHS 5210-100 2-5 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 fieldstrength can be calculated exactly by analytical (or numerical) methods, based on the coils' 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).
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  Helmholtz Coils
· Helmholtz Coils
· up to 250 A/m H field
· 1.20m x 1.20 m
· 10 turns
 

Schwarzbeck Helmholtz Coils HHS 5212 Data Sheet Schwarzbeck Helmholtz Coils HHS 5212 Data Sheet

HHS 5213 Helmholtz Coils
Schwarzbeck HHS 5213  Helmholtz Coil
· Helmholtz Coils
· 1.25 m x 1.25 m
· 50 turns per coil
· according to EN 55103-2 A.2.1.b)
 

Schwarzbeck Helmholtz Coils HHS 5213-50 Data Sheet Schwarzbeck Helmholtz Coils HHS 5213-50 Data Sheet

HHS 5213-100 Helmholtz Coils
Schwarzbeck HHS 5213  Helmholtz Coil
· Helmholtz Coils
· 1.29 m x 1.29 m
· 100 turns per coil
 

Schwarzbeck Helmholtz Coils HHS 5213-100 Data Sheet Schwarzbeck Helmholtz Coils HHS 5213-100 Data Sheet

HHS 5215 Helmholtz Coils
Schwarzbeck HHS 5215  Helmholtz Coil
· Helmholtz Coils
· up to 200 A/m constant H field
· 1,5 m x 1,5 m
· 10 turns per coil
 

Schwarzbeck Helmholtz Coils HHS 5215 Data Sheet Schwarzbeck Helmholtz Coils HHS 5215 Data Sheet

HHS 5215-100 Helmholtz Coils
· Helmholtz Coils up to 2000 A/m
· constant H field
· 1,5 m x 1,5 m
· 100 turns per coil
 

Schwarzbeck Helmholtz Coil HHS 5215-100 Data Sheet Schwarzbeck Helmholtz Coil HHS 5215-100 Data Sheet

HHS 5218 Helmholtz Coils
Schwarzbeck HHS 5218 Helmholtz Coil
· Helmholtz Coils up to 126 A/m
· constant H field
· 1,8 m x 1,8 m
· 10 turns per coil
 

Schwarzbeck Helmholtz Coils HHS 5218 Data Sheet Schwarzbeck Helmholtz Coils HHS 5218 Data Sheet

 

HHS 5230-100 Pair Of Helmholtz Coils
Schwarzbeck HHS 5230-100 3m Helmholtz Coil
· Pair of Helmholtz coils according to SAE J551-17:
· 2 square coils with a side length of 3 m
· 100 turns
· max. 650 A/m
· each coil movable separately on a wheeled platform.
 

Schwarzbeck Helmholtz Coil Pair HHS 5230-100 Data Sheet Schwarzbeck Helmholtz Coil Pair HHS 5230-100 Data Sheet

Schwarzbeck Assembly Instructions for Helmholtz Coil Pair HHS 5230 Assembly Instructions for Helmholtz Coil Pair HHS 5230

NFCN 9731-100 Matching Network
· Matching network for HHS 5230-100 for the following frequencies: 16,666 Hz; 50 Hz; 60 Hz; 150 Hz; 180 Hz.
 
Recommended amplifiers:
· 2 units of AE Techron 7224.
 

Schwarzbeck Compensation Network NFCN 9731-100 Data Sheet Schwarzbeck Compensation Network NFCN 9731-100 Data Sheet

NFCN 9732 Compensation Network

 

The compensation network NFCN 9732 is used for a series compensation of the HHS 5210-100 at energetical mains frequencies of 50 to 60 Hz.

 

Schwarzbeck Compensation Network NFCN 9732 Data Sheet Datasheet NFCN9732

 

Schwarzbeck Compensation Network NFCN 9732 Data Sheet Schwarzbeck DC Magnetic Field Immunity Testing Overview

 

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