These Helmholtz Coils are used in the calibration of magnetic field sensors, or for conducting any test or experiment requiring a known magnetic environment.
The coils are available with diameters of 350mm (HC16), 500mm (HC1®) or 1m (HC2®). They can be supplied on their own, or together with our Power Amplifier (PA1) and Control Unit (CU1).
The CU2 Module allows for closed-loop compensation to take place for improved field stability.
A compatible National Instruments acquisition card enabling software control is also available.A range of Ferronato Helmholtz Coils with 1.3 and 2m diameters are also available. These are compatible with
the control system described in this brochure.
| Product name | Code | Item | |
| HC1® | -1X , -1Y, -1Z | Single axis Helmholtz Coil 500mm nominal diameter: 1 pair of coils Available in X-axis, Y-axis, or Z-axis versions |
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| -2XY, -2XZ, -2YZ |
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| -3 |
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| HC2® | n/a | Three-axis Helmholtz Coil 1m nominal diameter: 3 pairs of coils | |
| HC16 | n/a | Three-axis Helmholtz Coil 350mm nominal diameter: 3 pairs of coils on plastic coil formers |
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| PA1 | -1X, -1Y, -1Z | Power Amplifier for HC1®-1 Available in X-axis, Y-axis, or Z-axis versions. To be used with corresponding Helmholtz coil |
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| -2XY, -2XZ, -2YZ | Power Amplifier for HC1®-2 Available in 3 different axis combinations. X and Y, X and Z, or Y and Z axes. To be used with corresponding Helmholtz coil |
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| -3 | Power Amplifier for HC1®-3, HC2® or HC16 | ||
| CU1 | n/a | Control Unit for HC1®, HC2® or HC16 | |
| CU2 | n/a | Closed-Loop Module supplied with CU2 Reference Magnetometer |
| Combination | HC1® with PA1 | HC2® with PA1 | HC16 with PA1 |
| Maximum field DC single axis* | >±500µT | >±250µT | >±1mT |
| Corner frequency | 100Hz | 20Hz | >100Hz |
| Maximum field at AC (single axis)* | >±100µT at 3kHz | >±100µT at 300Hz | >±100μT at 5kHz |
| DC field compensation | >±80µT | >±45µT | >±80μT |
• Calibration of three-axis magnetic field sensors
• Creation of a known magnetic environment