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HC16 350mm Helmholtz Coils

HC16 350mm Helmholtz CoilsPA1 Power Amplifier


Bartington Instruments' HC16 Helmholtz Coil system is designed to generate stable and homogeneous magnetic fields in up to three axes. The system consists of HC16 Helmholtz Coils with a diameter of 350mm, PA1 Power Amplifier and CU1 Control Unit (CU1) which interface with a PXI control system (or other compatible National Instruments acquisition card) that governs the operation of the system. Each pair of coils generates a magnetic field in one specific axis - X, Y or Z.

The coil pairs generate a homogeneous magnetic field, up to ±1mT from DC to 440Hz and >±100μT at 5kHz. The HC16 allows for testing of small sensors at higher fields and provides a homogeneous field to 1% in a volume of 1150cm3, and homogeneous to 0.1% in a volume of 175cm3. A mounting table is provided to hold the test item inside the central homogeneous volume.

The CU1 Control Unit interfaces between the PXI control system allowing to control the system from a Labview™-based software, whilst compensation potentiometers on the PA1 are used to cancel the local DC magnetic field.

The coil assemblies are built on non-conductive coil formers and can also be purchased separately from the rest of the system.

Typical applications:

• Calibration of three-axis magnetic field sensors.

• Creation of a known magnetic environment.


• Field strength of ±1mT from DC to 440Hz.

• Homogeneous field to 0.1% in a volume of 175cm3.

• Orthogonality correction using PA1.

• Control software available.

Export: This product is classified as dual-use and requires an export licence for shipping outside of the EU. See the Export Licence page for further details.

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