Bounty Hunter Time Ranger El manual del propietario descargar pdf (Pagina 7)

5. Shallow Water Hunting-- All First Texas Products searchcoils are

waterproof, allowing you to search in shallow water. However, if

you're searching around water, please be careful not to get the

electronics housing wet. Because water is electrically

conductive, mimicking the effects of metal, searching in the wet

zone of beaches usually requires sensitivity to be reduced. If it's

salt water, discrimination is usually necessary to avoid false

signals. Avoid salt spray, as it will work its way into the control

housing and damage the electronics-- such damage is not covered

under warranty.

HOW METAL DETECTORS WORK

Most metal detectors for finding buried objects are of the "VLF

Induction Balance" type. Here's how they work.

The searchcoil (also called "search head" or "loop") on the end of the

rod ("stem") contains two electrical induction coils which are like

antennas. The larger (outer) coil transmits a rapidly alternating

magnetic field, "illuminating" the region surrounding the searchcoil.

If metal is present, its electrical conductivity distorts the magnetic

field. If iron metal is present, its magnetism also distorts the

magnetic field, but in a different way, allowing the metal detector to

distinguish between ferrous and nonferrous metals.

The smaller (inner) coil is a receiving antenna which detects changes

in the magnetic field caused by the presence of metal. The

electronic circuit amplifies this weak signal, analyzes it to determine

what kind of change is occurring as the searchcoil is swept past the

metal object, and then conveys the information to the user in the

form of an audio tone and (usually) a visual display of some type.

The iron minerals which are present in most soils also distort the

magnetic field, often obscuring the weaker signals from small or

deeper objects. This can cause the object to go undetected, or to be

misidentified if it is detected. Much of the technology that goes into

modern metal detectors is devoted to the task of eliminating the

unwanted signals from iron minerals in the soil, while not losing the

signals from metals. The technology in the new improved Time

Ranger™ embodies the knowledge and experience of two of the best

known engineers in the metal detection industry.

1 2 3 4 5 6 7 8 9 10 11 12 ... 40 41

Sin comentarios

Bounty Hunter Time Ranger El manual del propietario Pagina 7