Bartington Instruments

High-Performance Magnetometers for Marine Defence Applications

5, 8, 10, 11, 12 Thorney Leys Business Park, Witney, OX28 4GE, United Kingdom

5, 8, 10, 11, 12 Thorney Leys Business Park, Witney, OX28 4GE, United Kingdom

Bartington Instruments designs and manufactures high-precision, low-noise fluxgate magnetometers, gradiometers and data acquisition units for naval applications, used globally by many naval forces. Our instruments have a reputation for performance, reliability and durability, and are widely used for magnetic signature measurements in degaussing ranges, in surveillance and for magnetic anomaly detection.

Submersible magnetometer for degaussing ranges: Mag-03RC

The Mag-03RC has been designed for measuring magnetic signatures in degaussing ranges and can also be used for marine surveillance. It can operate at a depth of 2,000m with cables up to 2km in length and has an MTBF of 75,000 hours. It has an inbuilt self-test facility and comes with a low noise specification of <20pTrms/√Hz at 1Hz.

Range of low-noise three-axis magnetic field sensors: Mag13

This versatile range of sensors for measuring geomagnetic and other background fields has applications in analysing the magnetic signature of ships for degaussing ranges. Sensors are available with noise levels <4pTrms/√Hz at 1Hz and for the operation to depths of 5000m.

Low-power magnetometers: Mag648S/Mag649S

These are compact three-axis magnetic field sensors, submersible to 2,000m, designed for applications that require very low power consumption (<15mW), including large networks of sensors in harbours and offshore surveillance.

Submersible three-axis fluxgate sensor array: Mag613

This array of eight miniature sensors provides measurements over 24 channels (8 x three-axis) for precision magnetic field mapping. It can provide magnetic signature characterisation in pressurised environments up to 50 bars, or 500m depth. Sensing elements are less than 1cm³. A cable up to 5m connects them to the electronics unit, which contains the power supply, driving circuitry and analogue multiplexer.

Three-axis submersible gradiometer: Grad-13

Grad-13 is ideal for detecting unexploded ordnance or pipes and cables on the seabed. Housed within a carbon fibre pressure enclosure, it operates to depths of 200m (Grad-13S) and can be mounted on remotely operated vehicles or used on its own. With baseline options of 500mm, 750mm or 1,000mm between sensing elements, it has noise levels of <20pTrms/√Hz at 1Hz and bandwidth to 2kHz.

Data acquisition system: DAS1

This versatile, multi-sensor data acquisition unit is intended for use with large arrays of sensors and can take up to 480 analogue inputs. It is designed for operation with most Bartington Instruments magnetometers and is compatible with most depth and acoustic sensors. Measurements are sampled and recorded within a self-contained unit using a LabView™ based software interface.

Aerospace-qualified three-axis magnetometers: Mag628/Mag629/Mag669

These three-axis fluxgate magnetometers are designed specifically to meet the exacting environmental requirements of aerospace applications and are ideally suited for vector compensation in airborne magnetometry. Mag629 and Mag669 have a rugged, mountable two-part construction sensor head assembly and separate electronics module with noise levels of <8pTrms/√Hz at 1Hz and <4pTrms/√Hz at 1Hz. Mag628 has unpackaged electronics for integration into existing systems.

Helmholtz coils for naval equipment testing

HC1 coils have a diameter of 500mm and can produce a 0.1% homogeneous field in a volume of 260cm³. This coil is available as a single, two or three-axis unit. It generates fields of up to 500μT at DC and 100μT at 3kHz.

The HC2 coil enables large item testing and has a coil diameter of 1m. The coil pairs generate a homogeneous magnetic field up to ±250μT at DC and up to ±100μT at 300Hz. It produces a homogeneous field to 1% in a volume of 14000cm³ and homogeneous to 0.1% in a volume of 2500cm³.

The HC16 is a small coil, which has a low coil diameter of just 350mm and is built on non-conductive coil formers. This prevents it from producing eddy currents. The coil pairs generate a homogeneous magnetic field up to ±1mT from DC to 440Hz and >±100μT at 5kHz. This enables small sensor testing at higher fields and provides a homogeneous field to 1% in a volume of 1150cm³ and homogeneous to 0.1% in a volume of 175cm³.

We supply Ferronato™ Helmholtz coils produced by Serviciencia SL for testing of large objects. These coils are compatible with the Bartington PA1 power amplifier and CU1 control unit. They are available in 1.3m (BH1300) and 2m (BHC2000) sizes.

The Helmholtz Coil Control System includes the PA1 power amplifier, CU1 control unit and CU2 closed-loop module. It enables production and control of the current to be applied to the Helmholtz coils.

Coil Systems

The Ferronato Helmholtz coils are used in the calibration of magnetic field sensors, or for conducting tests or experiments that require a known magnetic environment.

Bartington Instruments Ltd

5, 8, 10, 11, 12 Thorney Leys Business Park


OX28 4GE

United Kingdom

+44 1993 706565 +44 1993 774813