1
1 Introduction
1
Introduction
The
FerroTec FT 10
is a magnetometer used to locate concealed
ferromagnetic objects (steel, iron, cast iron).
There are two sensors in the magnetometer. These respond to
changes in the earth’s magnetic field caused by ferromagnetic
materials.
Changes to the earth’s magnetic field only reach full strength
days or even weeks after the object’s last movement. That is why
objects which have been in the ground for a long time are easier
to locate than objects that have been placed on the ground, for
example, for a trial detection.
Non-ferrous metals do not interfere with the detection process as
they are not ferromagnetic.
The magnetometer warns of live cables with a symbol on the
display.
Fig. 4:
Magnetic field lines of an object in the ground (cross section).
The two sensors (A and B) record different magnetic field lines
(signals). The magnetometer locates the object based on the
signal difference.
