Electromagnetic Compatibility; Performance; Magnetic Hysteresis; Environmental Precautions - Bartington Mag690 Operation Manual

5.4. Electromagnetic Compatibility

Note: The Mag690 is not shielded for immunity from, or emission of, electromagnetic
fields. Any shield placed around the sensor will limit the bandwidth of the sensor response.
The emissions generated are at a low level at the excitation frequency - refer to the product
brochure Breakthrough entry for the excitation frequency.
Note: When operating the sensor in environment where electromagnetic fields are present,
ensure to use a suitable sampling frequency so as to avoid aliasing.
Note: Do not place the sensor near to any equipment which may be affected by the AC
fields produced by the sensor's excitation.

5.5. Performance

Optimum performance of the sensor will be obtained after warm up of the sensor (please refer
to product brochure).
The sensor's breakthrough, the amount of excitation signal at the excitation frequency (please
refer to product brochure) is typically filtered when using Bartington Instruments power supplies
or data acquisition units.

5.6. Magnetic Hysteresis

The Mag690 is designed to have an extremely low magnetic hysteresis. However, Bartington
Instruments recommends your magnetometer is not subjected to magnetic fields greater than
their stated measuring range for extended periods, as this could alter the DC offset. If this
occurs, the offset will exhibit drift as it returns to its original offset specification.
Caution: Subjecting the magnetometer to fields in excess of 2 x the nominal range may
cause inaccuracy in future measurements. Degaussing the magnetometer can reverse
such an effect.

5.7. Environmental Precautions

Refer to the product brochure for maximum environmental electrical and mechanical ratings.
Caution: Exceeding the maximum ratings may cause irreparable damage to your sensor.
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