Nokta detectors Fors Tech - Manual (Page 28)

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
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.
In discrimination modes, positive hot rocks will give a typical metal sound again. Negative
hot rocks will not give any sound in these modes (except for occasional false signals).
Therefore, while searching in the field, you can decide by listening to the warning tones
emitted by the device. If you get a metal tone, it means that you have either detected a
metal or a positive hot rock. If you get a strong signal and a stable ID, you can determine
whether it is a hot rock or a metal by looking at the ID. Please keep in mind though weaker
signals tend to give different IDs and metals under rocks may produce different metal
signals. Consequently, digging up a target signal is the best option.
If you are using the discrimination modes and know the IDs of the hot rocks around you, you
can use ID masking to eliminate these rocks. However, this may not be sufficient to avoid all
rock signals. The device may still receive signals from rocks because soil and hot rocks
together will form a combined effect and generate a different ID than those of rocks.
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.
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General Search
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NOKTA DETECTORS
MAGNETIC MINERALIZATION LEVEL