Before they decide to choose a metal detector

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Before they decide to choose a metal detector

 

For any novice searcher is properly selected metal detector may be the key to successful search metal objects . However, without proper experience to find the right device – a big problem , since the market offers a large number of devices that have different characteristics and intended for various purposes . So what should you look for when choosing a metal detector ?

 

Definition of the problem

 

The first thing to do when choosing a metal detector is to determine the goals and match them to the available budget . Before purchasing the device is important to understand whether you search for serious work or just a hobby. You also need to know in which areas ( under the ground or under water ) and depths will be looking for items . For example, if the search will be made of metal pipes at shallow depths to carry out repair work – suitable metal of budgetary discharge . If the purpose is to detect precious metals or you frequently work at great depths or under water – to the choice should be approached more thoroughly and choose the more expensive detector . Metal detectors are divided into several groups.

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Soil metal detectors

 

As a rule , common ground metal detectors are located in the lower price range , that is , they have not often require high . This so-called ” economy class metal detectors .” Such devices are a good choice for a beginner , they are not abundant array of professional and novice difficult to understand functions. Typically, such devices are used for the search by not more than two frequencies . Often this type of metal detectors can work at relatively shallow depths . For example, for standard coins is 5-15 cm , bowl or ax – up to 30 cm , more dimensional objects – within 70-80 cm Despite the small depth of search , the bulk of devices from this subgroup has the necessary features needed to find items eg static mode.

 

Semi metal detectors

 

This class of metal detectors is different in that they have more features . Often additional functionality includes the principle of multi-frequency radiation , the output of the visual information on the screen , balancing device depending on the type of soil . Ability to customize the device according to the soil allows you to search objects at great depths. Also, these devices will help to identify as black metal found (magnetic) or color . Often detectors in this category may help with sufficient accuracy to determine what kind of non-ferrous metal found. Typically, the metal detectors in this category are sold together with interchangeable coils , which can help in the search , depending on the intended purpose . This group of devices can detect coins at a depth of 5-20 cm , bowl or ax – 40-50 cm, more dimensional objects – 100 – 130cm .

 

Professional metal detectors

 

This class of metal detectors designed for those who is looking for professional and sets the often very specific tasks. In the arsenal of metal detectors in this category include features such as multi-frequency detection principle objects , identification of the type and inductance metal discrimination differential sound is multi- search and many others. The same data metal detectors include the latest technologies , such as data processing microprocessor , which allows more clearly identify the detected object .

Before they decide to choose a metal detector

Typically, these devices provide the operator with their fine-tuning that facilitate the search for and identification of the type of metal . These metal detectors can help accurately determine ferrous metal even if it is located close to black. In devices of this category uses a digital alarm, both visual and audio. Just devices have the ability to automatically analyze readings that will help you understand what kind of object was detected and how deep it is. In most cases, all incoming data is analyzed by the microprocessor.

If all this is to generalize , the metal in this category is in fact a computer to search for objects . Of course, the depth of research devices varies depending on the size of the object : for small coins – 15-25 cm, for coins with a larger diameter – 30-45 cm , household items – 50-85 cm, bulky items – up to two meters. Of course, these metal detectors are located in the upper price range , and their price can reach several tens of thousands of dollars .

There is another classification , depending on the metal detectors in an environment in which they will operate , and in the search for certain metals.

 

search for gold

Types settings metal detectors on the ground ground metal detection Metal detectors to search for gold metal detectors for gold

As a rule , these metal detectors are included in the group of professional . Since the objects of gold is usually very small , these devices have increased sensitivity . Distinguish frequency grains of gold from other metal objects close to very difficult – and it is a priority of this subgroup of metal detectors . Based on this – the ability to detect other types of metals implemented in the best way . Despite the fact that manufacturers are specially tuned detector to find gold items , if necessary , you can also work successfully with other metals. The disadvantage is the relatively high price .

 

Underwater search

Underwater metal detectors and search for treasures under water

Underwater search involves complete immersion of the device under water. Based on this, all of the machine completely isolated from the ingress of moisture. These devices do not have a display , all information comes through the headphones , which can cause some discomfort, but is the only acceptable solution to work under the water surface . This detector allows you to search metals at the bottom of reservoirs , filtering out interference from water masses . Configure the device can be for fresh water or salt water , as well as to search in coastal areas.

 

deep search

 

This group of metal detectors designed to search metal objects , usually large and located deep underground. Mainly used for the search of pipelines and other large metal structures at depths of no more than six meters. In this type of metal detectors have a significant disadvantage – they are designed to search for large objects , they can not find small objects like coins at a depth of several centimeters.

Detector deep FX 3000 search of coins

Detector deep FX 3000 search of coins

However, accumulation of coins in the form of treasure such a device can detect . In these devices is practically no possibility to discriminate the subject , that is , to see what we found will have to do the excavation . Deep metal (or locators ) are widely used by engineers when dealing with underground structures . Just these metal detectors are used to search in areas of hostilities ended . Deep metal will calculate the exact depth of the object , where it is and some other features .

 

design of the device

 

An important factor to consider when choosing a metal detector – this design. After all, you have to work with the device for a long time , and this gives rise to specific requirements for weight and dimensions of the object . Various manufacturers produce many devices of all shapes and sizes, so when choosing should hold in your hand you are interested in a model to assess whether it is suitable for you. Consider also what materials made ​​himself a metal detector and charger used if high-impact materials . Make way regulated rod length , whether the armrest .

 

The size of the search coil

Description of the principles of search coils Mono for metal detectors

Special attention should be paid to the size of the search coil . Some mistakenly believe that the reel is, the more extensive area can be examined and error in the definition of the subject will be reduced . This is incorrect. Typically , coils of small diameter ( 7.5 inch ) better able to cope with the ground during operation , wherein the search objects placed close to each other, larger than the coil. If in such an environment, use a large coil , the signals will overlap , making it difficult to search – fall discriminating properties of the device , there is an unstable signal in the headphones. So when selecting the size of the coil should be kept in mind in what you often have ground work .

 

functionality

 

Note the number of functions for devices on the market . It may be that the function will vary considerably , despite the fact that the devices are in the same price range. Pick up the device so that its functions were required in your work , which you need to have a vision of relief features of places where you search . Conversely, some not too desired function can dramatically increase the price , buy a more expensive unit in this case would be a waste of money.