What to Look for in a Portable Metal Detector

Written By Chouhab on jeudi 22 janvier 2009 | 11:45

By Ann Triune

Like a regular metal detectors, a portable metal detector is made to find metal objects. However, the portable one is designed specifically for more personalized use such as searching for metal or weapons carried by people, clothes, bags, or other objects.

These types of metal detectors have sensitive surfaces and special shapes that make them easier to operate. These can be used at home to detect metal, live wires, or wood stud location. They can also be used as body scanners.

There are two types of portable metal detectors. There are hand held devices and walk-through metal detectors. Hand held metal detectors are light and easy to carry, with a small pouch or a wrist strap. Walk-through metal detectors come in small bags. They are foldable and easy to set-up and can be functional within five minutes.

A list of the technical features in a portable metal detector includes the following:

- 9V battery power supply - Adjustable sensitivity - Battery life in continuous operation is maximum of 50 hours with NiMH batteries, and 150 hours with alkaline batteries - Built-in buzzer with high-intensity pulsed acoustic alarm - Indicator lamps for power on, alarm, and low battery charge - Operating temperature of 5 to 140 degrees Fahrenheit (-15 to 60 degrees Celsius) - Relative humidity at 0 to 95 percent - Shock-resistant - Three-position switch with visible or with audible and visible alarms - Vibration function to enable silent work - Weighs 1 lb (0.4 kg), more or less

The indicator light will flash if the metal detector battery is low or has insufficient voltage. Models with rechargeable batteries take four to six hours to charge. Fortunately, portable metal detectors do not consume too much energy when in use, so you do not need to charge everyday.

Note that not all metal detectors not designed to detect metal implants or objects inside the body. Furthermore, they cannot locate the exact location of the metal in the body. More sensitive metal detectors are made for that purpose.

Green LED light commonly indicates that the device is on, amber LED indicated low battery, and red LED indicates alarm. Some models beep along with the alarm. The metal detector also cannot determine if the object is magnetic or not. All it can do is alert you to the presence of metal.

Check that the portable metal detector conforms to the international standards applicable for electrical safety, EC regulations, and EMC. This will make sure that the device has been tested to work properly and is guaranteed to be free of defects. If something does go wrong with the metal detector, it will be easier to replace.

A portable metal detector can be of personal or business use, so operators do not need special training. They are not meant to invade privacy, but to ensure safety and protection in security-sensitive places such as airports, banks, bars, businesses, courtrooms, malls, schools, and other public areas.

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