Applications
B3-8 ENVI-MAG Manual
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Figure B-23 Back-pack mounted sensor for WALK-MAG mode.
Sensor mounting and orientation
It is important that the sensor bottle be placed upright or very close to an
upright position on the back frame. Secure the sensor cable as much as
possible because you are using quite a sensitive instrument. If the cable is
not secure, it can create microphonic noise that typically presents itself as
spikes in the data.
Furthermore, (for your own comfort and convenience) the sensor cable
extending from the sensor bottle to the instrument should not be left
dangling, because you could trip over it. Either tape the extra cable in a knot
or hold it in your hand.
Avoid shaking the sensor bottle while surveying, as this will also introduce
instrumental noise which is impossible to remove.
Sensor orientation
It is also very important to maintain a constant orientation of the sensor
while you are measuring and walking from station to station. In other words,
do not sway to and fro while walking during a WALKMAG survey.
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