velleman CS250 Metal Detector User Manual

velleman CS250 Metal Detector

Product Information

Product Usage Instructions

Introduction
To all residents of the European Union Important environmental information about this product.

Safety Instructions
Keep the device away from children and unauthorised users.

Caution: wearing headphones in public places may lead to hazardous situations as traffic noise or audible warning signals are subdued.

General Guidelines
Warranty. The dealer will not accept responsibility for any ensuing defects or problems. Damage.

Features
The CS250 features:

• Headphones jack
• Control buttons
• Volume/power switch
• DISC indicator
• Battery power indicator

Glossary
The following terms used throughout the manual are standard terminology among detectorists:

• Metal being eliminated: The detector will not emit a tone or light up an indicator when a specified object passes through the coil’s detection field.

• Detector discriminating: The detector emits different tones for different types of metal and eliminates certain metals. This is an important feature for professional detectorists
  as it allows them to ignore trash and undesirable objects.

• Notching: The elimination of an item or range of items within the metallic spectrum.

• Auto-notch range: The detector automatically eliminates trash metals and keeps the detection for most coins. The auto-notch range is preset and not adjustable.

• Relic: An object of interest because of its age or its association with the past. Relics can be made of iron, bronze, or other precious metals.

• Iron: A common, low-grade metal that is often an undesirable target in certain metal detecting applications. Examples include old cans, pipes, bolts, and nails. However, valuable relics can also be composed of iron.

• Buried object: The process of finding the exact location of a buried object, which can be challenging as long-buried metals can appear exactly like the surrounding soil.

• Pull-tab: Discarded pull-tabs from beverage cans are bothersome trash items. They can be eliminated from detection, but some valuable objects with a magnetic signature similar to pull-tabs will also be eliminated when discriminating out pull-tabs.

• Ground cancellation: The ability of a metal detector to cancel or ignore ground mineralization, eliminating false signals from severe ground conditions and only emitting a
  tone when a metal object is detected.

• Surface elimination: A detector’s ability to ignore all targets on or near the ground’s surface, which is useful in heavy trash areas.

Overview
Refer to the illustrations on page 2 of this manual.

1. Headphones jack
2. Control buttons
3. Volume/power switch
4. DISC indicator
5. Battery power indicator

Introduction

• To all residents of the European Union
• Important environmental information about this product
• This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialized company for recycling. This device should be returned to your distributor or to a local recycling service. Respect the local environmental rules.
• If in doubt, contact your local waste disposal authorities.
• Thank you for choosing Velleman! Please read the manual thoroughly before bringing this device into service. If the device was damaged in transit, do not install or use it and contact your dealer.

Safety Instructions

hazardous situations as traffic noise or audible warning signals are subdued.
**| NEVER TOUCH AMUNITION OR OTHER POTENTIALLY LETHAL OBJECTS. Clearly mark the finding location – have somebody guard the site when possible – and contact the local authorities at once.**

General Guidelines

Refer to the Velleman® Service and Quality Warranty on the last pages of this manual.

• Protect this device from shocks and abuse. Avoid brute force when operating the device.
• Protect the device against extreme heat, dust and moisture.
• Familiarise yourself with the functions of the device before actually using it.
• All modifications of the device are forbidden for safety reasons.
• Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
• Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not accept responsibility for any ensuing defects or problems.
• The warranty does not cover damage caused by salty environments.
• Always make sure to comply with local rules and regulations.
• If the device is not used for a long time, remove the batteries. Leaking batteries can cause serious damage.

Features

• water-resistant search coil
• large LCD display
• variable sensitivity
• variable numeric discrimination
• variable notch
• preset ground balance
• signal strength readout
• 3-tone audio
•  volume control
• low-battery indicator
• 3.5 mm headphone jack

Glossary

Following terms used throughout the manual are standard terminology among detectorists.

• Elimination
  Reference to a metal being “eliminated” means that the detector will not emit a tone, not light up an indicator when a specified object passes through the coil’s detection field.

• DISC – Discrimination
  When the detector emits different tones for different types of metal, and when the detector
  “eliminates” certain metals, we refer to this as the detector “discriminating” among different types of metals. Discrimination is an important feature for professional detectorists. Discrimination allows the user to ignore trash and otherwise undesirable objects.

• Notch
  Notching is the elimination of an item or range of items within the metallic spectrum. We “notch out” an object or objects selectively.

• Auto-notch
  It eliminates trash metals automatically and keep the detection for most coins. The auto-notch range is preset and not adjustable.

• Relic
  A relic is an object of interest because of its age or its association with the past. Many relics are made of iron, but can also be made of bronze or other precious metals.

• Iron
  Iron is a common, low-grade metal that is an undesirable target in certain metal detecting applications. Examples of such undesirable iron objects are old cans, pipes, bolts and nails. Sometimes, the desired target is made of iron. Property markers, for instance, contain iron. Valuable relics can also be composed of iron such as cannon balls, old armaments, and parts of old structures and vehicles.

• Ferrous
  Adjective for an object made of or containing iron.

• GND TRAC – Ground tracking
  The process of finding the exact location of a buried object. Long-buried metals can appear exactly like the surrounding soil and can therefore be very hard to isolate from the soil.

• Pull-tabs
  Discarded pull-tab from beverage cans are the most bothersome trash items for the treasure hunter. They come in many different shapes and sizes, and can be eliminated from detection. However, some other valuable objects have a magnetic signature similar to pull-tabs and will also be eliminated when discriminating out pull-tabs.

• GND BAL – Ground balance
  The ability of a metal detector to cancel or ignore ground mineralization, eliminating false signals from severe ground conditions and only emitting a tone when a metal object is detected.

• SURF ELIM – Surface elimination
  A detector’s ability to ignore all targets on or near the ground’s surface, which is useful in heavy trash areas.

Overview

Refer to the illustrations on page 2 of this manual.

Assembly

1. Insert the latch on top of the handle into the assembly hole on the bottom of the control box. Slightly push the control box in the direction of the arrow to secure the latch. Secure the control box with the screw.
2. Unscrew the fixing knob on the search coil and remove the knob connector. Place the washers into the groove of the lower stem. Then, insert the stem and align the holes on the search coil bracket and the stem. Push the connector through the holes and tighten the knob. See illustration [A] on page 3.
   a| lower stem
   ---|---
   b| connector
   c| washer
   d| groove
   e| search coil
   ---|---
   f| washer
   g| fixing knob
3. Press the silver button on the upper end of the lower stem and slide the lower stem into the upper stem. Adjust the stem to a length that you feel comfortable with when you stand upright with the detector in your hand, and the search coil is level with the ground with your arm relaxed at your side. Rotate the lock nut in a counter-clockwise direction to lock.
4. Wind the search coil’s cable around the stem. Insert the search coil’s plug into the jack on the control housing.
5. Do not over-tighten the search coil or use tools such as pliers to tighten it.
6. The search coil’s plug fits into the jack only one way. Do not force the plug and do not pull on the cable to avoid damage.

Adjusting the Armrest
The standard position of the armrest is comfortable for most people. Very large or short forearms can be accommodated by adjusting the armrest accordingly.
The armrest is adjustable in three positions. To adjust, remove the screw from the underside. Then, move the armrest to one of the alternate positions. Re- install the screw.

Batteries

• This metal detector uses 2x 9 V alkaline batteries (not included).
• Only use fresh batteries. Do not mix old and new batteries or different types of batteries.
• Replace the batteries with new ones when the battery icon is blinking.

Installation

Refer to illustration B on page 3 of this manual.

1. Switch off the metal detector.
2. Slide the battery cover in the direction of the arrow.
3. Take out the two battery connectors from the compartments.
4. Connect a battery to each connector. Mind the polarity.
5. Re-install the battery cover and close the compartment.

• Do not puncture or throw batteries in fire as they might explode.
• Do not attempt to recharge non-rechargeable batteries.
• Dispose of batteries in accordance with local regulations.
• Keep batteries away from children.
• Remove the batteries from the battery compartment when the metal detector is not in use.

Using Headphones

• It is recommended to use headphones with a volume control. Set the headphones’ volume to the minimum level, connect to the metal detector, put them on and adjust the volume to a reasonable level.
• Remember that extended exposure to high volume levels may lead to permanent hearing loss.
• Also, do not wear your headphones near high-traffic areas and pay attention to traffic.

Basic Operation

Code of Conduct

• Do not interfere with archaeological sites or ancient monuments. Join your local archaeological society if you are interested in ancient history.
• Do not leave a mess. Use a sharpened trowel or knife to cut a neat circle or triangle, extract the object and carefully replace the soil and the grass.
• Help keep your country tidy. Bottle tops, silver paper and tin cans belong in a waste bin. Rusty iron and other scrap should be collected and taken to a specialized company for further handling.
• Do not trespass: ask permission before venturing onto private property.
• Report all historical finds to the local museum or government and get expert help if you accidentally discover a site of archaeological interest.
• Be very careful if you discover any live ammunition or any lethal object such as an unexploded mine. Do not touch the object! Mark the site carefully and report the find at once to the local police.
• Do not leave gates open when crossing fields and do not damage crops or frighten animals.
• Try to get along with any other detectorist you may meet. There is much to be learnt from experienced users.
• Always obey local laws and regulations. Contact your local government for more information.

| It is illegal for anyone to use a metal detector on a scheduled ancient monument unless permission has been obtained from the Historic Buildings and Ancient Monument Commission for England or the Secretary of State for the Environment in Scotland and Wales.
---|---
| It is forbidden to use a metal detector in order to carry out excavations of monuments and objects, which may relate to prehistory, history, art and archaeology without prior administrative authorization issued in terms of the qualifications of the applicant and the nature and modalities of the excavators.

Switching On Your Metal Detector
Rotate the on-off/volume button in a clockwise direction to switch on your metal detector. The detector will run a self-test programme for about three seconds and switches automatically to the discrimination mode.

Indoor Testing
Switch on your metal detector and set the operating mode.

DISC
Press DISC and then + or – to set the discrimination value. Each range is optimized to detect a specific kind of metal.

It is recommended to select a lower range so as not to miss on a specific buried object.

NOTCH

• Press NOTCH and then + or – to select the target to be notched out.
• The cursor above the selected target will flash.
• Press NOTCH again and the selected target will disappear.
• Proceed as above to re-activate the target.

SENS

1. Press SENS and then + or – to set the sensitivity.
2. Place the detector on a plastic or wooden table. Remove all watches, rings and other jewellery or metal objects on your hands, wrists and arms.
3. Adjust the search coil so that the flat part faces upwards.
4.  Evenly sweep an iron nail 10 to 12 cm above the search coil. The detector will emit a low tone when detecting the sample, the target indicator pointing the corresponding symbol. The depth indicator displays the approximate corresponding value. Repeat the above test with a silver coin. Different metals generate different tones.

object
Zn| the target is probably a zinc alloy, copper or a medium-sized gold object
high| 1¢| the target is probably zinc or a large gold object
25¢| the target is probably brass or silver

Remark :

• In DISC or NOTCH mode, the detector sounds a medium or high tone when detecting highly oxidized iron.
• About 15 % of gold rings cause the detector to sound a medium tone.

Outdoor Testing and Practice

Pinpointing
Accurate pinpointing takes practice and is best accomplished by cross-sweeping the target area.

1. Once a buried target is located and indicated by a good tone response, continue sweeping the coil over the target in a narrowing side-to-side motion.
2. Take visual note of the place on the ground where the metal detector emits a tone.
3. Stop the coil directly over this spot on the ground.
4. Now move the coil a few times straight forward and straight back.
5. Again, take visual note of the spot on the ground where the metal detector emits a tone.
6. If needed, cross-sweep the target in an X-pattern at different angles to zero in on the exact spot.

Coil Movement

• When sweeping the coil, be careful to keep it level to the ground at about 1 to 1.5 cm from the surface. Never swing the coil like a pendulum. Doing so will cause false readings. When searching, sweep the coil from side to side.

• Swing the search coil slowly, overlapping each sweep as you move forward. It is important to sweep the coil at a consistent speed over the ground as you search.

• After identifying a target, the sweeping technique can help in identifying both the location and the nature of the target. If you encounter a weak signal, try moving the coil in short and rapid sweeps over the target zone.

• Most worthwhile objects will respond with a repeatable tone. If the signal does not repeat after sweeping the coil directly over the suspected target, it is more than likely trash.

• Crossing the target zone with multiple intersecting sweeps at multiple angles is another way to verify the repeatability of the signal and the potential of the buried object. To use this method, walk around the target area in a circle, sweeping the coil across the target repeatedly, every 30 to 40 degrees of the circle, about ten different angles as you walk completely around the target. If a high-tone target completely disappears from detection at a given angle, chances are that you are detecting oxidized

• ferrous metals rather than a silver or copper object. If the tone changes at different angles, you may have encountered multiple objects. If you are new to treasure hunting, you may want to dig all targets at first. With in-the-field practice, you will learn to better discern the nature of buried objects by the nature of the detector’s response.

• You may encounter some false signals as you proceed. False signals occur when the detector beeps but no metal target is present. They can be induced by EMI, oxidation or highly mineralized ground soils.

• If the detector beeps once but does not repeat the signal with several additional sweeps over the same spot, there is probably no target present.

• When searching trashy soils, it is best to scan small areas with slow and short sweeps. You will be surprised just how much trash and foil you will find in some areas. The trashiest areas have been frequented by most people and frequently hold the promise for finding the most lost valuables.

Ground Balancing
This metal detector features a preset ground balance.

Factors Affecting the Detection

• It is generally difficult to have accurate detecting results. Sometimes, the detecting may be restricted by some factors, such as
  • the angle of the buried object;
  • the depth of the buried object;
  • the oxidation level of the buried object;
  • the size of the buried object;
  • the electro-magnetic and electrical interference surrounding the buried object.
• In highly mineralized soils or wet sand, the detector will sound even if there is no metal object present. If this is the case, lower the sensitivity level and increase the discrimination value. In the meantime, increase the distance between the search coil and the surface.
• In an area where you suspect much trash, set the discrimination level to around 50: most nails and trashy metal will be eliminated.
• In any case, remember to keep metal objects away from the search coil.

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.

Troubleshooting

• Before turning the device in for repair, read this section as it might contain the solution for your problem.
• When problems occur, first check the batteries. Replace the batteries when necessary and ensure the connections are correct and secure.

The detector drifts out of tune

• The metal detector can be affected by changing temperatures e.g. when the device is taken out of storage and out into the field. Wait a while until the temperature of your metal detector has stabilised. The device may need as much as half an hour to acclimatise if the change in temperature is extreme.
• Sometimes batteries will cause the signal to drift. Replace them if this is the case.

Technical Specifications

Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulting from (incorrect) use of this device. For more info concerning this product and the latest version of this manual, please visit our website www.velleman.eu. The information in this manual is subject to change without prior notice.

RED Declaration of Conformity
Hereby, Velleman NV declares that the radio equipment type [CS250] is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address: www.velleman.eu.

© COPYRIGHT NOTICE
The copyright to this manual is owned by Velleman nv. All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise without the prior written consent of the copyright holder.

Velleman® Service and Quality Warranty

• Since its foundation in 1972, Velleman® acquired extensive experience in the electronics world and currently distributes its products in over 85 countries. All our products fulfil strict quality requirements and legal stipulations in the EU. In order to ensure the quality, our products regularly go through an extra quality check, both by an internal quality department and by specialized external organisations. If, all precautionary measures notwithstanding, problems should occur, please make appeal to our warranty (see guarantee conditions).
• General Warranty Conditions Concerning Consumer Products (for EU): All consumer products are subject to a 24-month warranty on production flaws  and defective material as from the original date of purchase.
• Velleman® can decide to replace an article with an equivalent article, or to refund the retail value totally or partially when the complaint is valid and a free repair or replacement of the article is impossible, or if the expenses are out of proportion.
• You will be delivered a replacing article or a refund at the value of 100% of the purchase price in case of a flaw occurred in the first year after the date of purchase and delivery, or a replacing article at 50% of the purchase price or a refund at the value of 50% of the retail value in case of a flaw occurred in the second year after the date of purchase and delivery.
• Not covered by warranty:
  • all direct or indirect damage caused after delivery to the article (e.g. by oxidation, shocks, falls, dust, dirt, humidity…), and by the article, as well as its contents (e.g. data loss), compensation for loss of profits;
  • consumable goods, parts or accessories that are subject to an aging process during normal use, such as batteries (rechargeable, non-rechargeable, built-in or replaceable), lamps, rubber parts, drive belts… (unlimited list);
  • flaws resulting from fire, water damage, lightning, accident, natural disaster,  etc.…;
  • flaws caused deliberately, negligently or resulting from improper handling, negligent maintenance, abusive use or use contrary to the manufacturer’s instructions;
  • damage caused by a commercial, professional or collective use of the article (the warranty validity will be reduced to six (6) months when the article is used professionally);
  • damage resulting from an inappropriate packing and shipping of the article;
  • all damage caused by modification, repair or alteration performed by a third party without written permission by Velleman®.
• Articles to be repaired must be delivered to your Velleman® dealer, solidly packed (preferably in the original packaging), and be completed with the original receipt of purchase and a clear flaw description.
• Hint: In order to save on cost and time, please reread the manual and check if the flaw is caused by obvious causes prior to presenting the article for repair. Note that returning a non-defective article can also involve handling costs.
• Repairs occurring after warranty expiration are subject to shipping costs.
• The above conditions are without prejudice to all commercial warranties. The above enumeration is subject to modification according to the article (see article’s manual).

References

• Velleman – Wholesaler and developer of electronics

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