Table of Contents
Advertisement
TEKNETICS
Comprehensive Operating Manual & Guide to Metal Detecting
SEARCH TECHNIQUES
Sweeping Searchcoil
(this does not
apply to Pinpointing with the trigger
switch) Keep the searchcoil in motion to
RIGHT
detect targets. Sweep the searchcoil
parallel to the ground; do not lift the
searchcoil at the end of the sweep.
When you have located a target and
continue sweeping back and forth for
verification, use broad, deliberate sweeps
across the target for the most accurate
target ID. Do not use short sweeps as
you might with other metal detectors.
WRONG
Shallow Targets
Shallow targets tend to give multiple
responses, with the last response being
the one that remains illuminated on the
visual display. This last response is usually sampled at the edge of the searchcoil and will
tend to be inaccurate. If you suspect a shallow target (within 2 to 3 inches of the searchcoil),
lift the searchcoil slightly, and slow down your sweep speed until you notice a single response
consistently in the same place.
Large shallow targets will cause signal overload, indicated by the siren sound. In these instances,
raise the searchcoil until the overload warning disappears, and sweep at this increased height.
Large Targets
If an overload warning is not confined to a small spot, you are probably overloading on a large
object, for example, a large iron pipe, reinforcing steel in concrete, or buried sheet metal. It is
usually not possible to locate objects, such as coins, in close proximity to large masses of metal.
Pinpointing With the Trigger Switch
When you turn the T
2
on, the ground cancellation setting is preset to give a positive response
on nearly all soils. This means that if you are pulling the pinpoint trigger, the audio tone will
get louder as you lower the searchcoil to the ground. But you do not want to hear the ground;
you just want to hear the target. So always Ground Cancel first.
After you have discovered a buried metal target using the ALL METAL or DISCRIMINATION
Modes, use the trigger switch to pinpoint its exact location.
Position the searchcoil an inch or two (2.5-5cm) above the ground, and to the side of the
target. Then pull the trigger. Now move the searchcoil slowly across the target, and the sound
will communicate the target's location. As you sweep from side to side, and hear no sound at
the ends of the sweep, the target is located in the middle of that zone, where the sound is
loudest and the audio pitch is highest. If the sound is loud over a wide area, the buried object
is large. Use the PinPoint feature to trace an outline of such large objects.
25
Advertisement
Table of Contents
