HHS 5201-98 - DC - 200 kHz, Circular Helmholtz Coils

Circular Helmholtz Coils

Precisely defined magnetic fields. DC - 200 kHz.

The Schwarzbeck HHS 5201-98 generates defined magnetic fields from DC to 200 kHz. Its 98-turn coils provide a calculable relationship between drive current and magnetic field strength.

PARTNER:

SCHWARZBECK MESS-ELEKTRONIK

MARKETS:

RF ,

CATEGORIES:

TEST STANDARDS:

MIL-STD-461 ,

Data Sheet

SPECIFICATIONS

DC - 200 kHzUsable frequency range

12 AContinuous nominal coil current

98 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.

Continuous operation

The nominal coil current is 12 A continuous. The specified nominal magnetic field is 20 kA/m continuous. Field values apply at the stated reference spacing.

Short-duration operation

The maximum coil current is 40 A (1 min.); 15 A (15 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	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-Field strength	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
Recommended coil spacing	45 mm; field values refer to this spacing

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