The metal detector is one of the most popular electronic instruments. It is widely used in different places to detect the presence of metal. The person who keeps metal while crossing the metal detector device then it will identify. The metal detector is mostly used to find the metal hidden within particular objects. The DFMD stands for Door Frame Metal Detector that helps to detect the person with weapons. The metal detector helps to identify the guns on different metals such as aluminum, zinc alloy, mixed alloy, stainless steel, and others. Here you can get complete details about this metal detector.
Door Frame Metal Detector – What Is It?
Door Frame Metal Detector is one of the most popular metal detectors on the market. It is located in the door to detect the metal which might hide on individuals body passing via this metal detector door. It is used for the security test to access the points in knife, prisons, and others at popular places such as airports, shopping mall, and others. It detects concealed metal weapons on the body of a person within a few seconds. It can detect the metal immediately and created the alarm.
The door frame metal detector is a simple way to identify the weapon on the person. It helps you save more time on checking the person. This type of detector is developed to detect Non-ferrous and ferrous metal. With the help of higher sensitivity, the sensor is mostly used in the gold jewelry manufacturing industry to protect against pilfering. You can also find the metal detector in the distribution facilities for protecting valuable assets.
Working principle of this metal detector
This metal detector contains an oscillator producing AC (alternative current) which passes through a coil and the coil create the magnetic field. When electrically conductive metal is close to loop, then the eddy currents are induced in the concealed metal which produces own magnetic field. One of the technical changes in the metal detectors was the induction-balance system development. It involves two coils which electrically evaluated that provide the best result. When the metals are established to their locality, then it becomes unbalanced. It has a phase-sensitive detection circuit which allows the people to boost the sensitivity for the particular metal group.
Types of door frame metal detector
The door frame metal detector can be classified into different types, such as a single-zone metal detector and multi-zone metal detector. Every sensor has unique features so you can use this detector based on your needs. The Multi-zone metal detector offers multi-zone detection to the users. If the persons walk through this detector with the weapon, then the single or multi-zone metal detector will locate the person quickly. One of the main difference between the Single zone and Multi-zone metal detector is that the single-zone sensor only detects in a single side. And multi-zone detector will identify the person in on both right and left side of the target person.