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Three-Axis Fluxgate Magnetometers

Bartington Instruments offers an extensive range of three-axis magnetometers. These are suited to many different applications and operating environments, including general purpose, low power, digital, and specialist.

General Purpose

Mag-03 Our most versatile sensor, it offers measuring ranges from ±70µT to ±1000µT, a bandwidth up to 3kHz, and noise levels down to less than 6pTrms/√Hz at 1Hz. It is available with a variety of enclosures. This sensor is ideal for use in applications where high precision magnetic field measurements are required.

Mag-13 This is the lowest noise sensor available. It has noise levels below 5pTrms/√Hz at 1Hz, measuring ranges from ±60µT and ±100µT, and a bandwidth up to 3kHz. These sensors are environmentally sealed and incorporate a test coil and temperature sensor.

Mag690 This lower cost general purpose sensor is available with measuring ranges from ±100µT to ±1000µT, and bandwidth of 1kHz. It has noise levels from 10 to < 20pTrms/√Hz at 1Hz. Its performance and low cost make this sensor suitable for a wide range of OEM applications.

Mag639 This is the widest bandwidth magnetometer available, with a bandwidth of 12kHz. It offers noise levels from 10 to < 20pTrms/√Hz at 1Hz, and a measuring range of ±100µT. Designed for use in TDEM (Time Domain Electromagnetics) for UXO (unexploded ordnance) detection, but also has uses in environmental monitoring for EMC purposes.

Mag612 This low cost, two-part sensor, comprises a compact fluxgate probe and separate electronics connected by a cable up to 3 metres in length. It has noise level from 10 to < 20pTrms/√Hz at 1Hz. This probe can be supplied on its own, or with the electronics circuit design.

Mag619 This compact probe is supplied with a separate electronics connected by a cable of 1 metre. It has noise level >10 to < 50pTrms/√Hz at 1Hz. This probe is can be supplied on its own, or with the fluxgate magnetometer circuit design, which assists probe integration into your own design.

Low Power

Mag648/649 These low power sensors are available with measuring ranges of ±60µT or ±100µT, and a low noise option to ≤10pTrms/√Hz at 1Hz. The Mag649 is available with bandwidth of 1kHz. Both models are available with a variety of enclosures, including submersible. They are especially suited to battery powered and surveillance applications.

Mag651 This unpackaged, low cost, low power sensor has a measuring range of ±60µT, and noise range level from 10 to < 20pTrms/√Hz at 1Hz. It is especially suited to battery powered and surveillance applications.

Mag650 This unpackaged, low power sensor has noise specifications from 10 to ≤50pTrms/√Hz at 1Hz. Its design allows for integration in a compact cylindrical enclosure with battery cells.


Mag658 This unpackaged digital magnetometer has a resolution of 24-bit, measuring range of ±524µT, and includes an RS422 interface. It incorporates three-axis accelerometers to indicate sensor orientation.

Low Radiation

Mag585 This is a three-axis magnetometer with low level emitted radio-frequency radiation. Its measuring range is from ±70µT to ±1000µT, and has a bandwidth up to 2kHz. Typical applications include magnetic field measurement around permanent magnet MRI.

Marine Defence

Mag-03RC This sensor is designed for use underwater and over cables lengths up to 2km. This makes it ideal for defence applications, such as vessel magnetic signal measurement, and submarine and mine hunting. It includes a built-in coil for in situ testing.

Mag-613 This is array of eight miniature three-axis fluxgate sensors, designed to measure the magnetic signature of scale model ships and submarines. It can also be used in an oil-filled tank at pressures up to 50 bar.

Handheld Gaussmeters

TFM1186/THM1176 These handheld fluxgate and Hall Effect magnetometer gaussmeters offer a measuring range from ±100µT to ±20T, a bandwidth of 1kHz, and resolution starting at 4nT. Desktop versions are also available.