Cleaning And Storage - Velleman CS130 Notice D'emploi

Search coil sweeping hints
Never sweep the search coil as if it were a pendulum. Raising the search coil while sweeping or
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at the end of a sweep will cause false readings.
Sweep slowly. Hurrying will cause you to miss targets.
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• It is better to sweep the search coil from side to side in a straight line and keep the search coil
parallel with the ground.
Pinpointing a target
Accurately pinpointing a target makes digging it up easier. Accurate pinpointing takes practice,
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and we suggest you practice finding and digging up small metal objects on your own property
before you search other locations.
• 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.
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When the detector detects a buried target, continue sweeping the
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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
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beeps.
Stop the search coil directly over this spot on the ground. Then move
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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
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beeps.
Repeat Steps 1-3 at a right-angle to the original search line, making
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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
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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
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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.
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Using headphones will increase batteries life-time.
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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
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not let water enter the control box. Rinse the search coil with fresh water after using in salt
water.
10/10/2014
CS130
7 © Velleman nv