As the name suggests, a metal detector is a device which is used to detect the presence of metal and metallic materials and is used in a wide variety of different situations, perhaps on the beach to safely detect and remove non bio-degradable waste such as aluminium cans.
Metal detectors have became a standard feature in airports so as to detect and prevent the free movement of weapons and it is a sad reflection of the world and times we live in that schools are increasingly using them as well. The sensors that are included in metal detectors are exceptionally sensitive which means that they are capable of detecting metal through a number of different materials such as soil, fabric, wood and other non-metallic based substances.
Metal detectors all work in pretty much the same way, through use of electromagnetism, all metal detectors come with a battery which powers the transmitter which then emits the magnetic field. This magnetic field is then used when a metallic item is passed through the aura of the metal detector, the metal becomes magnetized and thus is detected by the sensors.
This electromagnetic signal is then received and transmitted direct to the electronic box and metal detectors come equipped with a speaker to help amplify the sound so that the user can know immediately that there is a metallic item.
It should be noted that there are a number of different metal detectors, each of which are used to detect more effectively a different metal, some metal detectors are sued for gold, others silver. Generally though, general-purpose ,metal detectors are more than sufficient for average use and such specialised metal detectors are only required for use in niche areas.
Like any other mechanical object, metal detectors will break down in time and will require some degree of maintenance and repair, which is relatively simply to achieve even for those who are not especially technically apt. The most common issue that interferes with the effective use of a metal detector is the amount of dirt and other fine particles that accumulate at the bottom of the detector, and these must be cleaned. To clean the main unit of metal detectors, hot water less than 40 degrees centigrade can be used, simply wipe off the excess dirt from the surface with a soft, non-abrasive cloth.
The conveyor belts also require a degree of maintenance, and are also rather easily fixed, neutral detergent and a plastic brush with soft bristles can be applied for the purpose, there is no need for specialized cleaning agents or solutions.
It may sound like a statement of the painfully obvious, but too many people purchase a metal detector, and do not bother to read the manual that comes with it, this is essential for the effective and proper use of the detector. This will allow you to more easily pinpoint any potential problems that may arise, and will also allow you to familiarize yourself with best practices so as to avoid any damaging conduct.
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