User manual C-SCOPE PROMET3

[. . . ] OPERATING INSTRUCfIONS [;)ffi@ZJ[3L1~ CONTENTS: 1 INTRODUCTION 2 ASSEMBLING YOUR PROMET 3 2·3 BATTERIES GETTING STARTED WITH YOUR PROMET 3 4 CONTROLS: On/Off Tune 4 Sensitivity 4 Ground Exclude 5 Retune Status 5 Auto Tune 5 Battery Check 5 Meter/Audio Discriminate 6 OPERATING YOUR PROMET 3: Pinpointing 7 7 Detection Range Target Size and Depth 7 The Right Approach 8 METAL DETECTING AND THE LAW 9 10 CODE OF CONDUCT 10 · 11 CARE AND MAINTENANCE 11 FURTHER INFORMATION INTRODUCTION The C-Scope PROMET 3 is the culmination of many years of research by both electronic engineers and metal detector enthusiasts to produce a detector with high performance, that both a novice or experienced user can harness to the full, simply and effectively. To protect your investment complete the enclosed guarantee card and return the reply paid portion to C-Scope. This is particularly important in order to obtain the free second year parts guarantee. In the event that your detector should ever require to be serviced, this package will be most suitable for postal protection. [. . . ] To overcome these problems simply raise the search head and re-scan until a clear signal of rejection or acceptance is obtained. OPERATING YOUR PROMET 3 To test for the type of signal you will get, take a coin or metal object and with the detector set up on a table tuned as previously described, move the metal object towards and across the search head. You will note that the volume will increase quickly as the metal object passes across the search head, with the loudest sound occuring when the search head is immediately centred over the metal object. As the object passes beyond the search head the sound will quickly fade. 6 Since the detectors employ a Total Response search head the object can be detected across the full width, back to front, of the search head. Maximum sensitivity occuring down the middle of the search head. Pinpointing (i) The strongest signal will always be received when the object is directly beneath the centre of the head (see X in Diagram 1). To pinpoint the find, stop the search head when you are directly over the target object, then move the search head through 90" and sweep again, thus forming a cross with the two sweeps. (ii) To 'focus' the target signal further raise the search head, retuning if necessary, and pass the search head over the object until only a faint signal is heard. The faint signal will then be occurring at point X under the centre of the head. More accurate pinpointing, particularly of deeply buried objects can be achieved by finding the centre of the target object as described above and fixing its position in the 'minds eye'. Turning your detector through 90" and sweeping across the target again will give a second reading, accurately determining the centre of the object. Digging carefully at point X will reveal the find. With little practice, size, shape and depth of an article may be estimated in this way before digging. DIAGRAM 1 Detection Range Detection ranges 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 ground conditions are well compacted soils and coins can be found at the greatest depths if the object has been buried for some time and the coin has interacted with the salts in the ground, thereby appearing larger to the detector. The worst conditions for detecting are on loosely compacted or freshly dug ground or when the object has only recently been buried. In these conditions detection range will be reduced. 90% of all artefacts are found within 6" of the surface. Adverse soil conditions can reduce depth of detection by more than half. 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. This technique is learned from careful analysis of the audio signals coming from the detector. Each time a signal is heard, listen for any peculiar characteristics it may have, determine over how large an area you get a detector signal, and try to "outline" the object before you dig. Listen for the sharpness or dullness of the signals and determine the magnitude of strength of the signal. A coin for example will have a sharp signal, a nail a fuzzy signal. After digging up the object, compare the object size, shape, depth and position in the grouno with signal information you received before digging. [. . . ] If you discover any live ammunition or any lethal object such as an unexploded bomb or mine, do not touch it. Mark the site carefully and report the find to the local police and landowner. Report all unusual historical finds to the landowner. Familiarise yourself with the law relating to archaeological sites. [. . . ]