Continuous operation
The nominal coil current is 10 A continuous. The specified nominal magnetic field is 1288 A/m continuous. Field values apply at the stated reference spacing.
HHS 5204-36 - DC - 150 kHz, Circular Helmholtz Coils
Circular Helmholtz Coils
Precisely defined magnetic fields. DC - 150 kHz.
The Schwarzbeck HHS 5204-36 generates defined magnetic fields from DC to 150 kHz. Its 36-turn coils provide a calculable relationship between drive current and magnetic field strength.
SPECIFICATIONS
DC - 150 kHzUsable frequency range
10 AContinuous nominal coil current
36 turnsPer coil
Defined by geometry
A calculable field.
A traceable measurement.
Magnetic field strength is proportional to coil current. Coil geometry, the number of turns and the applied current determine the resulting field, allowing the field measurement to be traced to a current measurement or the voltage drop across a known resistor.
The field depends on coil spacing and the position within the test volume. Use the reference spacings in the specifications and the field distribution data in the datasheet when selecting your setup.
Plan your test setup
Match the field to your application.
Short-duration operation
The maximum coil current is 20 A (5 min.). Observe the stated time limit and provide adequate ventilation. The frequency range alone does not imply that maximum current or field is available at every frequency.
Technical details
Specifications
Product specifications with reference conditions. See the linked manufacturer datasheet for complete field distributions and operating guidance.
View the complete datasheet →| 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 |
| 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 |
| Reference spacing for field values | 200 mm |
Where specified, coil distances refer to the coil centers. Continuous and short-duration limits are listed separately. Standards references retain the designations used in the source documents.
Installation and operating safety
Read the supplied datasheet before use. Switch off the complete system before making or removing connections and do not touch terminals during operation. Observe all voltage, current and time limits. High currents heat the coils; maintain adequate air circulation. Keep unintended magnetic field sources and magnetic materials away from the test volume.
North American sales
Discuss your test requirements.
Contact Absolute EMC LLC for the HHS 5204-36 in the United States, Mexico and Canada.
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