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when the arrow points towards magnetic north along the total field vector. The measurement axes are
designated X, Y and Z in the Cartesian co-ordinate system, when viewed from the top or non-connector
end of the sensor.
The analogue outputs may require external filters if not used with a Bartington Instruments data
acquisition unit, to achieve the noise specification of the sensor (see Noise).
4. General Description
The Mag-13 contains three fluxgate sensing elements mounted orthogonally in a block at one
end of an enclosure, which also contains the electronic circuitry. The connector is mounted at the
opposite end of the enclosure. The position and direction of each sensing element is indicated by
arrows on the outside of the sensor, together with the product code, measuring range and serial
number. The sensor elements are precisely aligned along the centre lines of the package, directly
beneath the diagram on the label.
Details of the enclosures, mounting, connector dimensions, connector pin allocation and the
position of the sensing elements relative to the enclosure are given in outline drawings on the
Mag-13 product page.
The sensors provide three high precision analogue outputs, proportional to the magnetic field
along each axis. The relationship between the magnetic field and the analogue output is extremely
linear. An additional output is provided in order to take temperature measurements or activate the
internal test coil.
The low output impedance of the sensor ensures it can be operated over long cables when
interfaced with Bartington Instruments' high impedance data acquisition systems. The zero field
offset error, scale factor, orthogonality and frequency response are individually calibrated.
5. Enclosures
The sensors are available in a variety of enclosures. All enclosures are environmentally sealed
and electrically shielded. A full list of sensors with specifications is provided in the product
brochure.
Note: Using your sensor in an environment that exceeds its rating may result in the need for
repair at the customer's expense.
6. Compatible Power Supply and Data Acquisition Units
A number of other Bartington Instruments products will work with the Mag-13 as power supply
and/or data acquisition units. These are listed in the product brochure and can be found at
bartington.com/data-acquisition-and-conditioning-units.html.
BARTINGTON INSTRUMENTS
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