3 Axis Helmholtz Coil

Overview

A three-axis Helmholtz coil assembly designed to generate controlled, vector magnetic fields in three orthogonal axes with a specified central uniform region (homogeneity sphere diameter). Each axis is a separate Helmholtz pair with a listed per-axis power range, and manufacturers provide both single-axis and assembled three-axis weights to support installation planning. Model codes follow a radius-based convention (e.g., DXHC25 corresponds to a 250 mm coil radius) and include the nominal center magnetic field in Gs in the model name. Key technical parameters (series overview): - Coil radius options: 70 mm to 300 mm (models DXHC7 through DXHC30). - Nominal center magnetic field: 2 Gs to 1000 Gs across the model range. - Field uniformity options observed in the series: 5%, 1%, 0.5%, 0.05% (specified per model). - Homogeneity sphere diameters (usable uniform-field volume): approximately 14 mm up to 200 mm depending on model. - Per-axis power ranges: from as low as 5 W up to 5000 W (specified as W per dimension or W per axis). - Mass: single-axis (one-dimensional) coil weights span from about 2 Kg to 500 Kg; three-axis assembled weights in the listed models range from about 8 Kg to 138 Kg. Representative model examples (verbatim values): DXHC25-1000 — radius 250 mm, center magnetic field 1000 Gs, uniformity 5%, homogeneity sphere 160 mm, each-dimension power 5000 W, one-dimensional weight 500 Kg. DXHC7-10 — radius 70 mm, center magnetic field 10 Gs, uniformity 0.05%, homogeneity sphere 14 mm, each-dimension power 5~24 W, one-dimensional weight 2 Kg, three-dimensional weight 8 Kg. The 3 Axis Helmholtz Coil series is intended for laboratory and industrial R&D and calibration tasks that require controllable, uniform magnetic fields and vector-field generation: magnetometer and compass calibration, MEMS magnetic sensor characterization, material magnetics measurements, and component-level magnetic susceptibility or low-frequency EMI test work. The specified homogeneity sphere diameter defines the usable test volume for devices or assemblies to be characterized under a uniform field. Selection is driven by required field amplitude and uniform volume: choose larger-radius models (e.g., 250–300 mm) when a larger homogeneity sphere or higher center fields (hundreds to 1000 Gs) are needed; these models carry much higher per-axis power requirements (hundreds to thousands of W) and correspondingly larger single-axis and assembled masses, which affect mounting, thermal management, and facility power provisioning. Smaller-radius models (e.g., 70–100 mm) provide compact, benchtop-suitable uniform volumes with per-axis power in the single- to low-double-digit watts and lighter weights for easier integration into production test stations or lab benches. Three-axis assemblies enable independent vector-field control for multi-axis sensor characterization and alignment tasks; the per-axis power range numbers serve as direct inputs for amplifier selection and electrical power planning, while the provided one-dimensional and three-dimensional weights inform fixture design and handling equipment requirements.