By: Richard Armen
Submitted: 2010-04-21 22:17:37 | Word Count: 562
Handheld metal detectors have a wide variety of uses. Typically used to detect concealed weapons or other metal objects on a person, the most frequently visible use of handheld metal detectors is by law enforcement, airport security, schools, and other security settings. It is also used for a range of other uses, such as detecting nails in a piece of wood. If you are thinking about purchasing a handheld metal detector, make sure that it has all of the features that you need for the intended use.
First, invest in a scanner that is sensitive enough for your needs. For security purposes, a detector that will find medium sized weapons from a distance of nine inches or more is usually recommended. With this setting, you can scan the individual or the bag from a comfortable distance. If the metal detector is too weak, you d need to scan the detector over the person s body from a much closer distance. Also consider the size of the metal objects typically uncovered during the use for which you intend the handheld metal detector; the device you choose should be able to find this size of object easily from a comfortable distance.
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In addition to its sensitivity, another factor that can affect the metal detector s usability is the size of the scanning surface. A larger scanning surface will allow for fewer passes over the object or person, allowing each scan to be performed faster and more efficiently. This is an essential feature for those who plan to use handheld metal detectors to scan crowds entering a building or event.
On the other hand, a large detecting surface should be balanced with a lightweight unit. Because the user must hold the handheld scanner while it is in use, a lightweight device can reduce fatigue and make it more comfortable to use a handheld metal detector for long sessions. Still, the device must be rugged, as it is most often used in security situations, often outdoors, where it must stand up to frequent use. The ideal metal detector has a large surface area, yet has been designed to be both as lightweight and as rugged as possible.
Many people don t realize that a scanner has to be returned regularly. This process ensures that the metal detector is picking up the right signals and emitting the detection alarm at the right time. This process is a type of tuning, and some handheld metal detectors will do it automatically while in use, while others must be manually returned. If you forget to manually return one of these detectors, your scans may not be accurate.
Another important feature to consider is whether the batteries in the device can be changed without tools. Being able to change the batteries quickly while on the go makes it much easier to use the device for long periods of time. Many of today s scanners also include a display showing the battery life, so that you can change the batteries promptly.
A high quality, handheld metal detector is designed to alert you about a concealed weapon or other metal objects. These devices typically emit both a beeping signal and a visual signal, such as a flashing light. Make sure that you invest in a quality scanner with all of the features explained above so that you can perform scans effectively and efficiently.
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