FW Bell

FW Bell

FW Bell is a precision instrument manufacturer specializing in gaussmeters, Hall effect sensors, and magnetic field probes for measuring DC and AC magnetic fields. The company has a long history of providing calibrated magnetic measurement solutions to industrial, scientific, and medical users. FW Bell products cover a wide dynamic range — from milligauss-level measurements in low-field research environments to high-field industrial testing. The brand is known for its axial and transverse Hall effect probes, engineered for accurate flux density measurements in confined geometries such as motor air gaps, transformer cores, and magnetic component assemblies. FW Bell is part of the Meggitt group of precision measurement companies.

FW Bell gaussmeters comply with calibration traceability requirements and are suitable for laboratory accreditation environments requiring documented measurement uncertainty.

Key Product Lines

• Gaussmeters: Benchtop instruments such as the 5180 series for measuring magnetic flux density in laboratory and industrial settings with digital readout and analog output
• Axial and Transverse Hall Probes: Directional sensing probes for measuring magnetic field strength in motors, transformers, permanent magnets, and MRI shielding structures
• Low-Field Test Probes: Specialized probes for measuring weak magnetic fields in sensitive applications including EMC field surveys and scientific instrumentation

Industries Served

FW Bell instrumentation is used in electric motor and transformer manufacturing quality control, permanent magnet characterization, electromagnetic compatibility (EMC) field mapping, medical device testing for MRI and NMR systems, aerospace and defense magnetic field surveys, and physics and materials science research laboratories.