Magnetic Mineralization level ranges from 0-99 and is
displayed in the Magnetic Mineralization Indicator on the
right side of the main screen. This measurement can be
summarized as the amount of the magnetic property and
intensity of the ground. Simply, if you are working on a
ground with intense and magnetic minerals, this value will
Tough ground conditions occur especially if the conductivity and magnetic properties of
the ground are intense. Most of the time, correct operation of the device on such ground
is possible with accurate mode selection, proper ground balance, sensitivity and threshold
settings.
Stones and rocks or dips and holes in the ground affect the quality of searching and target
detection as much as the ground itself does.
Soil and rocks have two different properties just like the targets you are searching for. One
of them is the intensity and the other one is the conductivity - magnetic permeability ratio
and these two properties are independent from each other. In this manual, the
conductivity - magnetic permeability ratio will be referred to as ID in short. High magnetic
permeability, low conductivity results in low ID. Soil or rocks can be highly permeable and
have low or high IDs as well. If the conductivity increases relatively to magnetic
permeability then the ID will also increase.
Hot rocks are classified as negative or positive based on their ID being low or high in
comparison to the ID of the soil they are in. One or both of the types may be present in a
field. The negative and positive effects mentioned here will only be valid if ground
balancing is properly done on the existing ground. Otherwise, soil itself will not act
differently from hot rocks in terms of ID. In ''Ground Tracking'' however, conditions will
differ. Therefore, the effects of hot rocks in ''Ground Tracking'' will be discussed separately.
Here we are referring to a proper ground balance without ''Ground Tracking''.
Positive hot rocks act and sound just like metals. In the General Search mode, when you
sweep the search coil over them, they tend to give a short ''zip zip'' sound. If the signal is
strong enough, the device may also give an ID for these rocks. Negative hot rocks, on the
other hand, tend to give a longer ''boing'' sound when the search coil is swept over them.
The device will not give an ID for these rocks regardless of the signal strength.
HOT ROCKS and SEARCHING IN ROCKY AREAS
be high. If the ground has low magnetic intensity, this value will be small.
This measurement is important from two aspects. First, detection depth is low in areas with
high magnetic mineralization and the user should be aware of this fact. Second, magnetic
mineralization is a property also found in hot rocks and measuring its level will play an
important role for the device to eliminate false signals caused by hot rocks.
Target
ID
General Search
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Target
ID
General Search
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FORS / Page 26
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NOKTA DETECTORS
MAGNETIC MINERALIZATION LEVEL
