CST Magna-Trak 102 User Manual

3
Theory of Operation
The Magna-Trak 102 locator finds ferromagnetic objects
by sensing the magnetic field radiated by the object. The lo-
cator contains two sensor coil assemblies that are precisely
spaced and electronically balanced to achieve a near magnetic
balanced operating condition. In a uniform magnetic field, such
as the earth’s field, the two sensor coils maintain a magnetic
balanced status, because both of the coils experience the same
magnetic lines of force. However, when a ferromagnetic object
is approached the field strength and angle of the magnetic lines
upon each sensor is different. This difference, although minute,
is enough to offset the critical balance and produce an audible
indicating signal.
When no ferromagnetic objects are present, the speaker
emits a steady low frequency tone. As the object is approached,
the audio frequency increases until the center of the object is
directly beneath the locator’s lower tip. The frequency peaks
and then decreases as the object is passed. The peak indi-
cates the exact location of the object.
Nonferrous objects do not effect the locator. Objects made
of brass, aluminum, copper, etc. are ignored.
Sensor coils unbalanced by iron stake’s magnetic field.

CST Magna-Trak 102 Specifications

General

Brand	CST
Model	Magna-Trak 102
Category	Metal Detector
Language	English