Handheld Metal Detector MD-3003B1

What is a handheld metal detector

Handheld metal detector is a kind of metal detector, which is named because it is used by hand. It is mainly used for factory anti-theft, place security inspection and examination room anti cheating. Compared with security inspection door, hand-held metal detector is more accurate. Alarm through electromagnetic induction of metal objects. The alarm methods mainly include sound, light, vibration, or through headphones.
Hand held metal detectors are designed to detect metal objects carried by people or objects. It can detect weapons, explosives or small metal objects in people’s parcels, luggage, letters, fabrics, etc. The special appearance of its sensitive surface makes it easy to operate. It is superior to ring sensor hand detection. Ultra high sensitivity, special application. Such as prison, chip factory, archaeological research, hospital, etc.
The handheld metal detector (handheld metal detector, imported metal detector, body search hand detector) is used to check the specific location of metal carried by people, and can also be used with the metal detection door. When the “security door” alarms and finds metal objects, the accurate location of metal objects can be found with the handheld metal detector. The metal detector adopts a rectangular detection head, and the detection area is 12 cm long. When checking the human body, the inspection work is completed from top to bottom at one time.

Use method of handheld metal detector

Before use, first open the battery box cover on the back of the instrument and install the battery. The instrument uses a 9V laminated battery. Please note that the nominal voltage on the battery must be 9V, and other voltages must not be substituted.
The power consumption of the instrument is very low. Each newly installed battery can work for about 50 hours. When the battery energy drops to 10%, the instrument can no longer work normally. At this time, the horn will make an intermittent click, suggesting that we must replace the battery. When in use, the security inspector holds the handle with his hand, presses the start button with his thumb, and then releases it, the signal light of the instrument starts to flash, and the horn emits a very slight beep at the same time, indicating that the instrument enters the working state. The staff will scan back and forth on the surface of the inspected person (or object) with the turned on instrument. If there is a metal object, the instrument will make a sound. After the inspection, press the stop button to avoid wasting the power of the battery.
Physiological research on how to judge the size of metal objects shows that people’s hearing is relatively slow to the change of volume (logarithmic relationship) and sensitive to the change of tone (linear relationship). According to the above situation, the instrument uses the level of tone to judge the size of metal objects, which is different from other similar products, It enables us to distinguish metal objects of different sizes more correctly.
When the probe of the instrument sweeps through the human body (object), if it makes a low sound, and the sound will gradually disappear after the probe stays above the sound producing place, we can judge that it is a very small metal, such as belt buckle, zipper, etc. If the sound is very sharp, even if the probe stops, the sound is still continuous, it must be a large piece of metal, such as dagger, pistol, etc.

Application classification of handheld metal detectors

Public safety inspection

Such as airport security, prisons, courts, testing institutes, banks, hotels, large conferences, sports competitions, concerts and other public security.

Factory anti-theft

Many factory products contain metal components. In order to prevent the loss of enterprise products, security guards inspect employees at the door of important workshops.

Anti cheating in examination

In recent years, the college entrance examination, graduate examination, civil service examination and other examination rooms prevent candidates from carrying wireless headphones and other cheating tools. Each examination room will be equipped with some handheld detectors. At present, many provincial education systems in China are equipped with such products.

Technical characteristics of handheld metal detector

• Built in buzzer;
• Adjustable sensitivity;
• Optional earphones for listening to alarm;
• Power supply and alarm indicator;
• Insufficient battery voltage indicator;
• Continuous service life of battery: Ni MH battery: 50 hours;
• Alkaline battery: 150 hours;
• Operating temperature: – 15 – + 70 ° C;
• Relative humidity: 0-95%;
• The shell is black shockproof ABS;
• Weight: 0.365kg (including battery).