| The main part of metal detectors is the control | | | | use of dangerous items such as handguns or |
| box, shaft, and search coil. Control box which has | | | | knives is the hand held metal detector. They are |
| speaker, batteries, and microprocessor | | | | hand held security metal detectors and walk |
| coordinates all activities. To protect the food | | | | through metal detectors. Walk over or hand held |
| source many companies use metal detectors to | | | | models of metal detectors are normally used in |
| check for metal contaminates in the food, and | | | | airports. |
| some drug companies use the metal detectors to | | | | Best rated walk through metal detectors have |
| check for the same thing in drugs. | | | | high target selection, low rate of false alarm, |
| Besides metal detection, a walk-through metal | | | | consistent detection, and a two way directional |
| detector includes and interface for an operator | | | | system. Cheap metal detectors are available in |
| and a control unit plus environmental tolerance, | | | | hand held, waterproof, and walk through models. |
| electro magnetic compatibility, and the assurance | | | | Walk through metal detectors offer quick and |
| of quality control. The control box is the brain of a | | | | effective processing. |
| metal detector. The magnetized metallic objects | | | | Underwater metal detectors can cost around |
| under the ground send a signal to the control box. | | | | $400-$600. Underwater metal detectors are |
| Metal detectors that are used in mining need to | | | | widely used to locate metallic objects under |
| be compact because of the space restrictions so | | | | water. Underwater construction companies use |
| the control unit and the search coil are integrated | | | | underwater metal detectors for pipeline or cable |
| into a single unit. | | | | locating functions. Some of the underwater metal |
| This disk comes off the shaft at an angle, which | | | | detectors can adjust the search depth. |
| allows it to be held parallel to the ground. Hand | | | | Advanced security metal detectors use low |
| held detectors come in various types, | | | | radiation x-rays for screening. Many metal |
| professional, commercial, all-purpose, gold metal, | | | | detectors have microprocessor technology to |
| beach and metal that is a relic. Many people use | | | | check for coarse grained food in cornflakes, |
| metal detectors to comb the beach for | | | | popcorn and noodles. Advanced gold detectors |
| treasures, people are looking for coins, or any | | | | can also resist dust and moisture. Some of the |
| other type of metals that might produce a wealth | | | | advanced gold metal detectors have three modes |
| of income. If you are walking along a beach you | | | | for speed tracking. |
| might come across many people with their | | | | Usually, the price of a metal detector starts from |
| instruments looking for these treasures. Since 911 | | | | $65. Some sites offer price discounts. |
| security has gotten tougher and many airports | | | | Most sites provide a price list for metal detectors. |
| and schools have turned to metal detectors, as | | | | The price of metal detectors may vary, based on |
| well and government buildings, hand held metal | | | | features and functions. If you are just starting |
| detectors are often an important part of security | | | | out it is a good idea to purchase an inexpensive |
| procedures. | | | | model before sinking the dollars into the hobby. |
| A great method of locating and preventing the | | | | |