Cleaning And Storage - Velleman CS130 Notice D'emploi

• Sometimes, targets are difficult to accurately locate due to the sweep direction. Try changing
your sweep direction to pinpoint a target.
• Follow these steps to pinpoint a target.
• When the detector detects a buried target, continue sweeping the
search coil over the target in a narrowing side-to-side motion.
• Make a visual note of the exact spot on the ground where the detector
beeps.
• Stop the search coil directly over this spot on the ground. Then move
the search coil straight forward away from you and straight back
toward you a couple of times.
• Make a visual note of the exact spot on the ground where the detector
beeps.
• Repeat Steps 1-3 at a right-angle to the original search line, making
an "X" pattern. The target will be directly below the "X" at the point of the loudest response.
Notes:
• If trash in an area is so heavy that you get false signals, slow your sweep and use shorter
sweeps.
• Recently buried coins might not respond the same as coins buried for a long period of time
because of oxidation.
• Some nails, nuts, bolts, and other iron objects (such as old bottle caps) oxidise and create a
"halo" effect. A halo effect is caused by a mixture of natural elements in the ground and the
oxidation created by different metals. Because of the metal mixtures, target signals might not be
in a "fixed" position. This effect makes these objects very hard to detect accurately.
Detection range
• The detection range will vary depending on the size of the object, the length of time an object
has been buried and the type of ground the object is buried in. The best soil is compact soil,
where you can locate coins at great depth, especially if they have interacted with the salts in the
ground, which makes them appear larger to the detector. The worst conditions for detecting are
in loose soil or freshly dug ground or when the object has only recently been buried. Ninety
percent of all objects are found within 6" of the surface. Adverse soil conditions can reduce the
detection range by as much as 50%.
Determining the target size and depth
• An operator who is familiar with his instrument will be able to do an excellent job of determining
object size, shape and depth before he digs. He does this through careful analysis of the audio
signals coming from the detector. You should always listen for the specific characteristics of a
signal. Determine over how large an area the contact generates a signal to try and "outline" the
object before you dig. Listen for the sharpness or dullness of the signal and determine the
strength of the signal. A coin generates a sharp signal, while the signal for a nail is vague.
Batteries
• Always carry a spare set of batteries when going out on a fieldtrip.
• Using headphones will increase batteries life-time.
11.

Cleaning and storage

• The life of your detector is shortened by neglect or careless use. Wipe the housing with a damp
cloth and then wipe it dry carefully if you have used the detector in a hostile environment (salty
water, sand, etc.).
• Do not clean the detector with solvents or detergents.
• The search coil is waterproof and can be submerged in either fresh or salt water. However, do
not let water enter the control box. Rinse the search coil with fresh water after using in salt
water.
Salt damage
• Salty air can penetrate the control box in case of frequent use in a salty environment. Parts of
the electronic circuitry may corrode. You can protect your metal detector by covering the control
box with polythene. The warranty does not cover damage caused by salty environments.
Storage
• Store the detector in a dry and warm environment under normal humidity conditions.
• Remove the batteries to prevent them from leaking if the metal detector is to be stored for long
periods.
03/05/2011
CS130
8
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