Bartington Fluxgate Magnetometer, 3-Axis, Low Noise

Bartington 3-Axis Fluxgate Sensors are compact, high performance fluxgate sensors with integral electronics that provide precision measurements of static and alternating magnetic fields in three axes.

Mag-13 Fluxgate Sensors can be used for most applications where high precision magnetic field measurements are required.


  • Range: ±60μT to ±1000μT
  • Bandwidth: >3kHz (-11dB/octave roll-off)
  • Noise: down to <6pT/√Hz at 1Hz
  • Scaling Temperature Coefficient (nT/°C):±1 (6µV/°C) at ±1000 mT Range
  • Operating Temperature: -40 to +70°C
  • Dimensions, Mag-13MS: 32 x 32 x 225mm
  • Dimensions, Mag-13MC: Ø 25 x 225mm

See Also:

Typical Applications:

  • Use as feedback sensors on active cancellation systems
  • Reference magnetometer for calibration purpose
  • Magnetic surveys of magnetic anomalies at small and large scales
  • Geophysics including time domain electromagnetic and magneto-telluric
  • Monitoring of magnetic fields during experiments

Tech Support

  1. “Long Term Magnetic Field Monitoring for Space Weather Monitoring and GIC Forecasting” – presentation by Ludo Letourneur of GMW, Jenn Gannon of Computational Physics, Mike Henderson of GIC Magnetics
  2. Application Note: Electromagnetic Survey
  3. Application Note: Quantum Computing
  4. Application Note: Space Weather Monitoring
  5. Application Note: Mag-03 used in MRI Controlled Area Safety
  6. Application Note: Mag-03 and Spectramag-6 used for pre-installation MRI site surveys
  7. Application Note: HDD Magnetic Ranging
  8. Application Note: Field in SRF Cavities
  9. Application Note: Magnetic Signature
  10. Applications of Three-axis Magnetic Field Sensor
  11. The application of the Bartington Fluxgate Magnetometers in TDEM
  12. The use of Bartington Fluxgate Magnetometers in MT
  13. Mag-03 and Spectramag-6 used in magnetic hygiene tests of spacecraft components
  14. Mag-03 used to measure solar weather from the ground
  15. Mag-03s used to measure ELF magnetic field emissions from mobile phones
  16. MRI site survey
  17. Mag-03 for Payload Attitude Control on Sounding Rockets
  18. Use of Mag-03 in Cone Penetration Tests
  19. Mag-03 used in MRI Controlled Area Safety
  20. Mag-03 Used in Active Cancellation Systems in MRI Suites
  21. Fluxgate magnetometers used for on board closed loop degaussing magnetic field cancellation
  22. Magnetic field cancellation
  23. Mag-03 downhole survey
  24. Mag-03 Use in Low Cost Magnetic Signature Measurement System
  25. Bartington’s fluxgate adapted for Metrolab’s THM1176 family
  26. Mag-03RC and DAS1 used in Magnetic Signature Range Measurements
  27. Mag-03 and Spectramag-6 used for pre-installation site surveys
  28. Connecting your own Power Supply to a Bartington Magnetic Field Sensor


Covas, P. B. et al. (LSC Instrument Authors). Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO. Phys. Rev. D 97, 082002. 2008

Nguyen, P. et al. Environmental noise in advanced LIGO detectors. arXiv:2101.09935. 2021


Mueller, H. et al. Keynote Speech – Mapping Seafloor Massive Sulfides at the Central Indian Ridge with a Novel Central Loop Electromagnetic Profiler. Conference Proceedings, Near Surface Geoscience 2016 – First Conference on Geophysics for Mineral Exploration and Mining, Volume 2016, P1-5. 2016.

Gavazzi, B., Le Maire, P., Munschy, M., Dechamp, A.. Fluxgate vector magnetometers: A multisensor device for ground, UAV, and airborne magnetic surveys. Leading Edge, Society of Exploration Geophysicists, 35 (9), pp.795-797, 2016.

Munschy, M., Boulanger, D., Ulrich, P., Bouiflane, M. Magnetic mapping for the detection and characterization of UXO: Use of multi-sensor fluxgate 3-axis magnetometers and methods of interpretation. J. Applied Geophysics, 61, Iss 3-4, P168-183, 2007.


Altarev, I. et al. Minimizing magnetic fields for precision experiments. J. Applied Physics, 117, 233903, 2015.

Hwang, S-M. et al. Effective cancellation of residual magnetic interference induced from
a shielded environment for precision magnetic measurements
. Appl. Phys. Lett. 99, 132506. 2011

Gohil, C. et al. Measurements of stray magnetic fields at CERN for CLIC. 10th IPAC, Melbourne, Australia, 2019.

Gohil, C. et al. Mitigation of stray magnetic field effects in CLIC with passive shielding. 10th IPAC, Melbourne, Australia, 2019.

Ludwig, F. et al. Magnetorelaxometry of magnetic nanoparticles with fluxgate magnetometers for the analysis of biological targets. J. Magnetism and Magnetic Materials, 293,1, p690-695. 2005.

Wyszynski, G. Development of magnetic field control systems in the nEDM experiment. Thesis, Jagiellonian University Krakow, 2016.

Aleksandrova, A. Magnetic Field Monitoring in the SNS Neutron EDM Experiment. Thesis, University of Kentucky. 2019.


Sveinsson, B. et al. Detection of nanotesla AC magnetic fields using steady-state SIRS and ultra-low field MRI. J. Neural Eng. 17 034001,2020.



The PSU-1 contains configurable high and low pass filters for the analog signals from the Mag-03, Mag649 and Mag690 sensors.
This unit supplies dc power to any Mag-13, Mag-03, Mag649 or Mag690 sensor using the ac adapter provided or from the internal rechargeable battery. The ±12 volt supply is fully isolated and the battery provides up to 10 hours of continuous operation.


The SCU-1 is a 19" rack mount unit that provides low noise power and precision signal conditioning for any Mag-13, Mag-03, Mag649 or Mag690 sensor. The unit operates from a 110 or 220 Vac mains supply.


The Magmeter-2 is a portable, battery powered unit provides both power for magnetic field sensors and simple access to filtered versions of the sensor's XYZ outputs. It incorporates three displays showing the values of the magnetic field being measured by the connected sensor. Low-pass filtering (9kHz) is applied to all sensor outputs. A high-pass filter (0.1Hz) is also selectable via a front panel switch.


The Mag-03MC-BR is a convenient mounting clamp for the cylindrical version of the Mag-03 sensors.


Mag-Shield, 100mm

The Mag-Shield is a triple-layer, mu-metal, magnetic shield cylinder with open ends for easy access. Available internal diameters are 100mm, 120mm and 140mm with length of 300mm. The 100mm ID is normally stocked.

Degaussing Wand

The Degaussing Wand is a mains powered, handheld instrument that is used for removing accumulated magnetic fields from other devices. Instruments that measure magnetic fields can become magnetized themselves, thus adversely affecting their performance.


The Spectramag-6 is a fast six-channel 24-bit data acquisition system with simultaneous sampling of all channels and a USB interface to the user's PC. The unit is designed for the simultaneous collection and analysis of two Mag-03 Fluxgate Sensors or one Mag-03 and up to three channels of vibration and/or acoustic.


Mag-13 Three-axis Fluxgate Magnetometer

Configured models commonly in stock

Part No.DescriptionPriceIn Stock

Three axis sensor, square, +/-100uT, low noise version


Three axis sensor, square, +/-100uT, standard noise


3-Axis Sensor, Cryogenic , ±100uT


Three axis sensor, square, +/-1000uT, standard noise


Mag-13 Three-axis Fluxgate Magnetometer

Manufactured to order. Specify range when ordering, e.g. 100uT, 1000uT

Part No.DescriptionPriceIn Stock

Three axis sensor, square, standard noise


Three axis sensor, square, low noise


Three axis sensor, square, submersible, low noise


Three axis sensor, square, submersible, standard noise


Three axis sensor, cylindrical deep submersible, standard noise


Three axis sensor, cylindrical deep submersible, low noise


Three axis sensor, unpackaged, standard noise


Three axis sensor, unpackaged, low noise


Two-Part three axis sensor, unpackaged, standard noise


Two-Part three axis sensor, unpackaged, low noise


Mag-13 Cables

Part No.DescriptionPriceIn Stock

Cable, 5m, Mag-13MC/MS to PSU1/SCU1


Cables are available in lengths to 600m – additional price/m


Mag-13 Accessories

Part No.DescriptionPriceIn Stock
Mag-13MS Sensor Adaptor

Adaptor for mounting Mag-13MS that fits on the above raisers/spacers. (Only required when calibrating Mag-13MS sensors)

Mag-13MS Open End Mounting Jig

Special jig to enable calibration of Helmholtz coils that fit on the above raisers/spacers.


Mag-03 Three-axis Fluxgate Magnetometer

Part No.DescriptionPriceIn Stock

Three axis sensor, cylindrical, shielded, ±100µT


Three axis sensor, cylindrical, shielded, ±1000µT


Three axis sensor, cylindrical, shielded, ±1000µT


Mag-03 Cables

Part No.DescriptionPriceIn Stock

Cable, 5m, Mag-03MC to Mag-03SCU/DAM/PSU


Spectramag-6 Magnetic Field & Vibration Survey System

Part No.DescriptionPriceIn Stock

Spectramag-6 six channel spectrum analyser with cables and software




Mag-03MC adaptor for tripod


Mag-03MS adaptor for tripod


Mag-03 Leveling platform


Mag-03 Horizontal adjuster


Accelerometer, 1V/g


Accelerometer, 10V/g


Carrying case for spectramag-6, sensors, cables, and tripod


Triaxial mounting block for 393A03 accelerometer


Triaxial mounting block for 393B31accelerometer


Cable, 3m accelerometer to Spectramag


Acoustic sensor with pre-amplifier and cable


Mag-13 and Mag-03 Common Accessories

Part No.DescriptionPriceIn Stock

Magnetic Shield, three layers, with closed ends. Inner dimensions 100mm ID x 250mm length.


Magnetic Shield, three layers, with closed ends. Inner dimensions 200mm ID x 400mm length.


Magnetic Shield, three layers, with open ends. Inner dimensions 100mm ID x 300mm length.


Power Supply Unit, compatible with Mag-03, Mag649, Mag690


10-channel power supply unit, usable with Mag-03, Mag-13, Mag690, Mag648, Mag649


Signal Conditioning Unit, compatible with Mag-03, Mag649, Mag690


Power Supply and Display Unit, compatible with Mag-03, Mag649, Mag690


Mounting clamp, for Mag-13MC and Mag-03MC cylindrical sensors


Degaussing wand, recommended with TLMS


Calibration – Mag-03, Mag-13 and Spectramag-6 Fluxgate Sensor

Part No.DescriptionPriceIn Stock

Mag-13/Mag-03 Sensor Calibration Check and Certificate


Mag-03DAM Calibration Check and Certificate


Mag-03PSU Calibration Check and Certificate


Mag-03PSU Compliance Test


Mag-03SCU Calibration Check and Certificate


Spect-6 Calibration Check and Certificate


Spect-6 accelerometer Calibration Check


Spect-6 acoustic sensor Calibration Check


Terms and Conditions

Terms and Conditions:

Prices above are for domestic deliveries to Canada, USA and Mexico only.
For deliveries in all other countries please contact Bartington.
Prices are expressed in U.S. Dollars, FCA San Carlos, California.
Prices are subject to change without notice.
Quantity and OEM discounts are available.


Visa, MasterCard, Amex, Prepayment before shipment, or Net 30 days (subject to credit acceptance).


Stock to 90 days.