One of the most important components of the metal detector is the search coil, which to a
great extend determines its sensitivity.
When the metal detector is carried, for example in a rucksack or a traveling bag, an exceptional care
should be taken to avoid the bending of the coil cable near the nozzle at the base of the search coil,
because that may result in tearing the cable connecting cores and damaging of the search coil and
the metal detector.
When necessary, the search coil and the box of the electronic block, can be cleaned with wet
cloth. Do not use detergents, as they may damage the plastic parts or the inscription on the
front panel, back panel and on the lid of the electronic block.
The electronic block and the search coil are very sensitive towards sudden environmental
temperature alterations. When there is a sudden temperature change, the user should wait
usually 20-30 minutes before switching on the metal detector.
The power on of non air-conditioned and non tempered metal detector can cause its damage.
Signs of non tempering are: frustration, inability to regulate or evenness of the sound
threshold; a general lack of sound. In the presence of at least one of these signs, to prevent
injury, it is necessary metal detector immediately be power off and left off a few minutes to
temper and/or air conditioning (in high humidity, the transition from warm to cold and vice
versa).
While working with the metal detector, the search coil should be protected from damage (hit).
The usage of the metal detector during rain may result its damage.
The metal detector could be safely and properly used, if there is morning dew (because of the
watertight search coil). An extensive care should be taken, if the detector is put on the ground,
especially on a wet grass, as the water should not be allowed to get inside the box of the
electronic block (as in connector PHONES). The electronic block is not watertight and a serious
damage would be caused to the metal detector, if water gets inside it.
At mineralized terrains, terrains with moist, wet or clay soil, it is possible the metal detector to
has the hole effect.
The hole effect is expressed by the detection from the metal detector of false signal such as from
metal object, in a search over the blank, usually freshly dug hole.
The hole effect is due to the dependence of the metal detector from the balance to the ground, and
consequently of the drastic difference between the earthly balance over the hole (excavated section
from the terrain) and on the side of the hole (not excavated section from the terrain).
When working with the metal detector on a particular terrain, the user balance the metal
detector to it, and to the ground, the metal detector does not issue false signals caused by the
ground. When on this terrain be excavated hole, it has a different ground balance compared to
the balance of the terrain to which the metal detector is set, ie to hole the metal detector is
not balanced. For this, when search over her and in her, the metal detector can issue false
signals.
The greater difference in the ground balance between the terrain and the hole, the stronger is the
false signal. For this, the hole effect usually occurs visible only on mineralized terrains, terrains with
moist, wet or clay soil.
The hole effect is increased, when in the deep the hole covers different in composition and
mineralization ground layers, to which, accordingly, the metal detector has a different ground
balance.
In practice, the user recourse to search over hole, when he is detected a signal, dug a hole and
examined the excavated soil from the hole, for the presence of the detected metal object. In
the case where the metal object is not in the excavated soil, should that user have not dug it,
because it is of greater depth, or because it is dig in the wrong place. For this, in practice is
evident the need, the user to search over already excavated hole to center again the signal, ie
to decide whether to continue to dig in the same place in depth, or somewhere sideways.
To reduce and eliminate the hole effect are apply the following methods:
- search over the hole with a slow and careful swings of the search coil. If the swings are fast, the
hole effect will manifest itself dramatically;
- in advance for specific terrain, the user to dig a hole, to balance the metal detector to it and to
remember these settings. Accordingly, in every hole which he should check, to set of the metal
BLISSTOOL LTC64X
- User Guide (version EN201405101504)
Page 39 of 42
