One of the most important inventions in the world of security is definitely security metal detectors. They can be the first line of defense in identifying and isolation threats at the entrance of a location. Of course, in order to use them effectively, it is also essential to be able to understand how they work. This way, you can make sure that you are able to use these detectors effectively to have the peace of mind that you deserve.
Basically, all security metal detectors emit an electromagnetic pulse at different intervals which passes though the field localized in the scanner. Basically, these pulses can be 100 pulses per second or more depending upon the type of detector which is being used. As these pulses die out, they can interact with the outer electrons of various objects and this interaction will be greatest when these electromagnetic pulse fields are passing through metallic objects. Basically, as per the principles found by James Maxwell, these interactions will induce an electric current, which also in turn generates a new electromagnetic field. This electromagnetic field will be picked up by the metal security scanner and a DC circuit will change this field into an electric current which in turn is transformed into an audio sound. Hence, when this audio sound is heard by the security personnel, then the necessary action can be taken.Of course, depending upon the strength of the electric current which has been generated, the sound can be greater as well. Thus, the security personnel will have an idea whether the metallic object is large or small. In fact, the newer devices also have a Led monitor which shows the strength of the field created. Thus, the electronic signature for a metallic coin will be very different then the electronic signature of a gun.
Based upon this information, if a further analysis is ready, then a hand heldmetal detector can be used to scan the person’s body in more detail. Thus, by understanding the physics of metal detectors, it is possible to recognize credible threats and then to take the necessary action to combat these credible threats. Of course, it is also essential to make sure that you work with a high quality device, so that you can make sure that the process is reliable and that your security is at a maximum level.