Ground Balancing Technical Info - Teknetics G2 Owner's Manual

GROUND BALANCING -Technical Info
Fe O BARGRAPH
3 4
The Fe O 7-segment bargraph indicates the amount of ground mineralization,
3 4
independent of type, expressed as an equivalent volume concentration of
magnetite (Fe O
3
the most accurate readings if you pump the searchcoil up and down several times
over the ground. The presence of metal or "hot rocks" will cause the readings to be
inaccurate. If you stop moving the searchcoil, the bargraph will go blank.
INDICATION
7 Bars
2 to 6 Bars
1 Bar
none
Magnetic susceptibility is expressed in micro-cgs units. In a saltwater environment
in the absence of iron minerals, the bargraph indicates relative electrical conductivity.
In soils with greater than 10,000 micro-cgs units magnetic susceptibility, the
signal from the soil may saturate, or overload, the circuitry. This will not harm
the detector but the machine will not be usable in that condition. The solution
is to hold the searchcoil several inches above the soil surface so it is not "seeing
as much dirt." By listening and watching you will know how high you need to
hold the searchcoil in order to avoid overload.
The highest magnetic susceptibilities are usually found in soils developed over
igneous rocks, in alluvial black sand streaks on beaches, and in red clay soils
of humid climates.
The lowest magnetic susceptibilities are usually found in white beach sands of
tropical and subtropical regions, and soils developed over limestone.
24
). It updates every second. It is sensitive to motion and will give
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RELATIVE
MINERALIZATION
High
Medium
Very Low
--
% Fe O
3 4
over 1
.026 - 1.0
0.006 - .025
less than .006
SUSCEPTIBILITY
over 2500
61 - 2,500
15 - 60
less than 15