Metal detectors are used in different areas of our production and life, and it is a necessary means to prevent metal foreign objects from being mixed into products. To detect whether there is metal around, we can also use metal detectors to help us detect, this instrument once detected metal, will activate the alarm.
6 points for the normal operation of metal detectors:
1, remove the watch, ring and other jewelry worn on the body, and then put the detector on a wooden or plastic table.
2. Adjust the Angle of the detection disk so that its disk surface is parallel to the ceiling. Do not test metal detectors on the floor of a building. Because most buildings have metals in the floor, they can interfere with the object being tested or completely confuse the signal.
3. Move the sample of the material you want to test about 5 cm away from the probe disk. Note: The disk cannot detect stationary objects because you are not using the detector for search scanning at this time, so you must move the test object.
4. Find a metal-free area outside.
5, want to detect the sample on the ground, if the use of precious metals such as gold to test, the placement area is marked for easy to find later. Do not place the sample on high vegetation or tree protection.
6, hold the detector, so that the detection disk is parallel to the ground 2.5-5 cm, the metal detector slowly moves the detection disk above the sample area for side-to-side (moving left and right) search.
In addition, food in the raw materials and processing process, will be mixed with some foreign substances, these substances will cause harm to the consumer's body and even life-threatening. The main methods of detecting foreign matter in food include X-ray detection, metal detection, visual inspection, electronic scanning and so on. Metal detection is one of the most common methods. The use of metal detectors is ultimately to improve product quality, maintain corporate image and protect consumer interests.
Metal detector, as a typical instrument to control metal foreign bodies, is a metal detection device on food packaging and material transmission lines, which can effectively identify metal hazardous substances mixed in food and materials, and remove metal substances in an appropriate way.
If the newly welded metal detector does not work properly, first check whether the components and wiring welding on the circuit board are wrong, and then measure whether the battery voltage and power supply circuit are normal, the stable voltage of the voltage regulator VD1 is between 5.5 and 6.5V, and the polarity of VD2 is not reversed. Do not weld the first stage and head and tail ends of the oscillating coil in the probe disc incorrectly.