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Field procedure
•
Inform yourself about the area, where you are searching. Does it make sense to detect here? Are
there historical references which confirms your speculation? What type of soil is on this area? Are
there good conditions for data recording? Is it allowed to search at this place (e.g. private property)?
•
Your first measurement in an unknown area has to be large enough to get representative values. All
further control measurements should be adjusted individually.
•
What is the form of the object you search? If you are looking for an angular metal box, the identified
object in your graphic should have a form according to this.
•
To get better values concerning depth measurements, the object has to be in the center of the
graphic, which means it has to be framed by normal reference values (normal ground). If the object
is on the side of the graphic and not totally visible an estimated depth measurement is not possible
and also measurement of size and form are limited. In this case, repeat the scan and change the
position of your scan area, to receive an optimal position of the anomaly inside of the graphic.
•
There should not be more than one object in a scan. This will influence the depth measurement. It is
useful to scan partial areas over such targets.
•
You should do at least two controlled scans to be more sure about your results. This is also important
to recognize areas of mineralization.
•
Most important rule when dealing with mineralization.
REAL TARGETS DON'T MOVE!
If your target
moves then it is most likely mineralization.
8.2.1 Orientation of probe
During one measurement the probe should have always the same distance to the ground. Generally we
recommend a height of about 5 – 15 cm from the surface of the ground if possible.
In the event that you are going to go over stones, wood or high grass that is higher, start your scan with the
sensor higher right from the beginning. In circumstances like these, then perhaps you will need to start the
scan with the probe at a height of 2 feet (50 cm) and keep it at that level for the entire scan. It is important to
maintain the height, this will eradicate many errors. As a rule, do not change the height during a scan for it
may create unnecessary errors.
Another important aspect is the physical orientation of the probe. During the "Parallel" scan mode the
orientation of the probe does not change because you are always measuring in the same direction. Even in
the "Zig-Zag" scan mode the orientation of the probe must not be changed. That means you are not allowed
to turn yourself with the device and the probe at the end of the scanning path. Instead you should walk
backwards and continue scanning. Otherwise your obtained graphic includes red or blue stripes. These
stripes throughout a scan are commonly referred to as “Rotational Errors”.
OKM GmbH
Summary of Contents for Fusion
Page 1: ...Fusion Light User s Manual ...
Page 6: ......
Page 7: ...1 Introduction CHAPTER 1 Introduction ...
Page 12: ......
Page 13: ...2 Technical specifications CHAPTER 2 Technical specifications ...
Page 15: ...3 Scope of delivery CHAPTER 3 Scope of delivery ...