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Instruction Manual

1. ENER ee 7 6 Detector response to discrete objects 0 cece eee eee 8 7 Technical specifications 000 SEEDEDE SEERE eee eens 11 8 Spare parts and accessories cece eee eee 12 9 Maintenance osc ic KEN ECKER dE EN Mee iinei eee ee Cede ER NK SR 12 10 Related equipment 0 cece eee eee eee eee eee eens 13 elcometer Thank you for your purchase of this Elcometer Protovale 520 Deep Cover Metal Detector Welcome to Elcometer Elcometer are world leaders in the design manufacture and supply of inspection equipment for concrete and coatings Our concrete inspection products include a comprehensive range of concrete and civil engineering inspection equipment Our coatings products cover all aspects of coating inspection from development through application to post application inspection The Elcometer Protovale 520 Deep Cover Metal Detector is a world beating product With the purchase of this instrument you now have access to the worldwide service and support network of Elcometer For more information visit our website at www elcometer com 1 ABOUT YOUR METAL DETECTOR The Elcometer Protovale 520 is a high powered detector for detection of metal at greater depths than other instruments Originally designed to locate water mains pipes and cables the Elcometer P520 is also the perfect choice for location work in cluttered areas and at depths where other metal detectors simply do not work 1 1 FEATURES e Deep seek
2. Elcometer The warranty will be invalidated if the instrument has been opened Contact details can be found on the outside cover of these instructions or on the Elcometer website www elcometer com elcometer 10 RELATED EQUIPMENT Elcometer produces a wide range of metal detectors and concrete and coatings inspection equipment Users of the Elcometer Protovale 520 Deep Cover Metal Detector may also benefit from the following Elcometer products e Elcometer Rebar Locators e Elcometer Timber Metal Detectors e Elcometer Concrete Covermeters For further information contact Elcometer your Elcometer supplier or visit www elcometer com 13
3. Elcometer Protovale 520 Deep Cover Metal Detector Operating Instructions elcometer This product meets the emc directive 89 336 EEC amended 92 31 EEC and 93 38 EEC The C Elcometer Protovale 520 Deep Cover Metal Detector has been tested in accordance with EU regulations governing Electromagnetic Compliance and it meets the required directives Note Performance may be affected if the unit is operated within a radio frequency electromagnetic field strength greater than 3V m elcometer and Protovale are registered trademarks of Elcometer Limited All other trademarks acknowledged Elcometer Limited England 2009 All rights reserved No part of this document may be reproduced transmitted transcribed stored in a retrieval system or otherwise or translated into any other language in any form or by means electronic mechanical magnetic optical manual or otherwise without the prior written permission of Elcometer Limited A copy of this Instruction Manual is available for download on our Website via www elcometer com downloads Doc No TMA 0284 Issue 03 Part No 18698 elcometer CONTENTS Section Page 1 About your Metal Detechor enes eee ene eee eee 2 2 GOING SAMO sits EEG LERET DEERE EES 4 3 Using the instrument ev sn oe ied KINNEN EEN dE died ENEE ENN BER 6 4 Strong signals and target pinpointing 0 cece eee eee 7 5 Exiraneous melal ss scajecaaceieie Kid acne areca tas RENE KAN ache Oe dean ie ease
4. ecome slightly warm to the touch The unit will be fully charged in 10 to 12 hours or over night A partially discharged battery can be topped up by charging for as long as the period of discharge Due to the design of the charger supplied no harm can come from overcharging so if in doubt leave on charge over night It is recommended that the batteries are not left for long periods without charging as this can damage the batteries e if the instrument is used on a daily basis charge the batteries at the end of each day e if the instrument is used infrequently charge once a month Note Nickel Cadmium batteries must be disposed of carefully to avoid environmental contamination Please consult your local Environmental Authority for information on disposal in your region Do not dispose of any batteries in fire elcometer 2 2 CONNECTING THE SEARCH HEAD Screw the TNC plug of the search head into the socket marked coil on the front panel of the control unit taking care not to cross the threads 2 3 SWITCHING ON Switch the machine on by turning the control marked GAIN clockwise from the OFF position until it just clicks on The machine is now working and set to minimum sensitivity 2 4 BATTERY TEST Press the button marked BATT ZERO a meter reading of 7 or over within the green arc indicates that the batteries contain sufficient charge If the meter reading is less than 7 the batteries sh
5. fore resuming searching If the signal is still too strong try raising the search coil away from the object 5 EXTRANEOUS METAL Although the user may be searching for just one specific object the instrument will react to all metal that is within its detection range This may yield a number of confusing extra responses and indeed an object which is nearer or larger than the target may well mask its presence The user should therefore carefully appraise the environment for suitability of application bearing in mind extraneous metal Signals from objects such as structural metal piles and girders ferroconcrete fencing and railings and pipelines and conduit will be received over long distances Short range signals can come from finger rings watches metal toe caps even wooden benches and trestles containing screws Note Always remember to keep the control unit well away from the search head otherwise the control unit will be detected also elcometer 6 DETECTOR RESPONSE TO DISCRETE OBJECTS 6 1 OBJECT ORIENTATION Non magnetic non ferrous objects give the greatest signal when they present the largest area thus a sheet of metal gives the greatest signal when face on and the least when edge on For magnetic ferrous objects e g iron or steel the signal is magnified by its length to diameter ratio this means that the greatest signal will often be received when the object is being looked at end on T
6. he location of a single piece of metal in an environment that is cluttered with extraneous metal will be difficult if not impossible 7 TECHNICAL SPECIFICATIONS Control unit dimensions 233 mm x 180 mm x 100 mm 9 2 x 7 x 4 Search Head Diameter 22 cm 8 7 Weight 850 g 1 87 Ib Power Supply Internal rechargeable cells APPROXIMATE DETECTION RANGE Gate hook 61 cm 24 Barbed wire length 400 mm 15 7 36 cm 14 Staple length 40 mm 1 6 33 cm 13 Nail length 75 mm 3 33 cm 13 Nail length 125 mm 5 34 cm 13 4 elcometer 11 elcometer 8 SPARE PARTS AND ACCESSORIES The following replacement items are available from Elcometer or your local supplier Description Sales Part No 200 mm 8 Search Head TW520197B Replacement mains charger UK 240 V TW999060C Replacement mains charger EU 220 V TW999060F Replacement mains charger US 110 V TW999060G 9 MAINTENANCE The Elcometer Protovale 520 Deep Cover Metal Detector is designed to give many years reliable service under normal operating and storage conditions No special maintenance is necessary though the unit should be wiped clean of dirt and moisture after use To prevent damage to the search head plug and socket keep the threads clean and free from mud and grit The instrument does not contain any user serviceable components In the unlikely event of a fault the instrument should be returned to your local Elcometer supplier or directly to
7. hese comments apply when the object lies on the axis of the coil Le on the line through its centre either above or below which is where most objects but not all give the greatest response min elcometer 6 2 EDGE EFFECTS In some cases an object with a poor response under the centre Non ferrous of the coil due to its unfavourable orientation will give a stronger d signal when under the edge of the coil In some cases therefore a difficult object will appear as two sharp responses exactly one coil diameter apart with the true position halfway in between this is particularly true of small iron nails max min Ferrous min max min A special case is a long iron bar when the response at the ends is greater than that over the middle medium max elcometer 6 3 WIDTH OF RESPONSE Mentally plotting the strength of response against position as the object is scanned across can give yet more information about the object d a fy o A K a B PR s c S Pi D S 2 gt gt gt gt gt movement A A close object gives sharp responses as it crosses the edges of the coils B Distant objects give a more gradual decrease off centre C Extended objects have a sharp response at their edges and a flatter response across their centre And two profiles you should NOT get D Signal too strong object too large or too close reduce sensitivity E Scanning too fast slow down T
8. ing and accurate can locate a 100 mm 4 metal water main at 1 2 m 46 and will locate valves even when the frame and cover are missing e Analogue meter shows the signal strength allowing you to identify the orientation of the metal object e Stable and reliable results the instrument does not need constant zeroing or recalibration e Loudspeaker volume control and socket for headphones for noisy environments elcometer 1 2 WHAT THE BOX CONTAINS Elcometer Protovale 520 Deep Cover Metal Detector Search head Leather carry case Charger Operating instructions The instrument is packed in a cardboard and foam package Please ensure that this packaging is disposed of in an environmentally sensitive manner Consult your local Environmental Authority for further guidance To maximise the benefits of your new instrument please take some time to read these Operating Instructions Do not hesitate to contact Elcometer or your Elcometer supplier if you have any questions elcometer 2 GETTING STARTED 2 1 CHARGING BATTERIES The Elcometer Protovale 520 Deep Cover Metal Detector is powered by internal rechargeable batteries A fully charged unit will give 9 or 10 hours of operation 1 Make sure the instrument is switched to the OFF CHG position 2 Insert the coaxial plug of the charger into the CHARGE socket on the bottom panel of instrument and plug charger into mains outlet After about half an hour the charger will normally b
9. ould be charged see Charging batteries on page 4 2 5 USING HEADPHONES In noisy environments it may be easier to hear the signal if headphones are used Connect your headphones not supplied to the 3 5 mm jack socket fitted on the left hand side of the case To switch off the sound to the speaker use the switch marked SPEAKER MUTE ON this will mute the sound from the speaker but has no effect on the output from the headphone socket elcometer 3 USING THE INSTRUMENT 1 Holding the search head well away from any metal rotate the GAIN control fully clockwise and then rotate the zero control until the meter is set to zero The instrument is now set to maximum sensitivity The unit will produce a faint tick over sound 2 Hold the search head above the ground and sweep the instrument back and forth When metal is detected the meter deflects progressively to the right and the audible tone simultaneously increases its ticking note past a low frequency buzz and progresses through a tone of increasing pitch up to a high whistle If the search coil is scanned rapidly over an object there is a slight time lag in the onset of indication and also in its dying away so that the maximum signal appears just past the true position If the coil is moved more slowly the lag is not noticeable and precise location is then possible The most efficient way to establish quickly the presence of metal is to operate the Elcometer P520 at maximum sensitivi
10. ty GAIN control rotated fully clockwise however having established the presence of metal the sensitivity can be progressively reduced by turning the GAIN control anticlockwise to enable accurate pin pointing of the metal object to within 5 cm to 8 cm If a steady background signal from distant metal is present rotate the zero control anticlockwise to reset the instrument to zero The most sensitive point of the search head is its centre 3 When you have finished detecting remember to switch the unit off and if necessary recharge the batteries elcometer 4 STRONG SIGNALS AND TARGET PINPOINTING Whereas the signal from an object at its maximum detection distance is weak the signal from the same object very close to the coil is between one hundred and one thousand times stronger and will cause the circuits to overload Whilst no damage is caused this produces two effects the unit will tend to give a saturation signal over a wide area surrounding the object and even when the coil is moved well away the indication will persist for a finite time until the circuits recover from the overload To minimise this progressively turn the GAIN control anticlockwise Accurate pin pointing may also be helped by moving the search coil into the region of strong signal and adjusting the zero control anticlockwise to subtract the edges of the response If this is done remember to re zero the instrument away from metal to restore full sensitivity be

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