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Security metal detector test and installation method is introduced, come and collect!


Release time:

2023-01-19

The test and installation method of the security metal detector The metal detector circuit has no adjustment part except for the sensitivity adjustment potentiometer. As long as the welding is correct, the circuit can work normally. When the whole machine is static, that is, when a speaker does not produce sound, the total current density is about 10mA. When it is detected that different metal speakers can produce Chinese sound, the working current of the whole machine rises to 20mA, and a new laminated battery can work for 20~30 hours.

What is the test and installation method of the security metal detector? Let's take a look.

The test and installation method of the security metal detector The metal detector circuit has no adjustment part except for the sensitivity adjustment potentiometer. As long as the welding is correct, the circuit can work normally. When the whole machine is static, that is, when a speaker does not produce sound, the total current density is about 10mA. When it is detected that different metal speakers can produce Chinese sound, the working current of the whole machine rises to 20mA, and a new laminated battery can work for 20~30 hours.

安检金属探测器

If the newly welded metal detector cannot work normally, first check whether the components and wiring on the circuit board are welded incorrectly, and then measure whether the battery voltage and power supply circuit are normal. The stable voltage of the zener diode VD1 is between 5.5 and 6.5V, and the polarity of VD2 should not be reversed. Do not weld the wrong end of the oscillating coil and the end of the oscillating coil on the detection plate.

Before the metal passing detector can be used, the length of the detection rod needs to be adjusted. As long as the black glue is loosened, the rubber through sleeve is pushed and pulled to a suitable length, and then the rubber through tube is rotated to tighten the cable line, and the handle is in the upper end direction upward, and the black glue is tightened to lock the rubber through sleeve. In this way, when you hold the handle of the detector, your thumb is next to the sensitivity adjustment potentiometer.

When adjusting the sensitivity of the metal detector, the detection disc (oscillation coil) should be away from metal, including paper with aluminum foil, then turn the sensitivity fine potentiometer knob (FINE TUNING) to turn on the power switch, and turn it to the half position, then adjust the coarse potentiometer knob (TUNING) to stop the audio sound of the speaker, and then fine adjust the potentiometer to stop the sound of the speaker. At this time, the sensitivity of the metal detector is high. When using a metal detector to detect metal, as long as the detector plate is close to any metal, the speaker will make a sound, and when it leaves a certain position, the sound will automatically stop.

How does the security metal detector detect? Let's take a look.

1. The metal detector must be preheated 30 minutes in advance before the security inspection starts; 2. All products must be tested for metal; 3. The product must pass the metal detection in the direction and manner of calibration; 4. Alarm product handling; 5. After the detector gives an alarm, repeat the detection in the same direction and the same manner for 3 times. If it fails to give an alarm for 3 times, it can pass; if it gives an alarm for 1 time, it cannot enter the next process; 6. Products that fail to pass the metal detection shall be clearly marked, and metal detection shall be carried out again immediately after completion. If there is no alarm in both directions, it can be judged as qualified products; if there is still an alarm, it is judged as the presence of metal impurities, and it shall be immediately marked with eye-catching marks and isolated for treatment; 7. The quality inspector is responsible for thawing and checking the metal of the products judged to have metal impurities; 8. The quality inspector is responsible for pasting the metal fragments on the gold exploration record sheet and identifying its source; 9. Once metal impurities are found in the product, the detection time, product, metal type and quantity should be recorded in the gold exploration record sheet; 10. The quality controller reports to the HACCP team to carry out CCP correction actions and fill in relevant records.


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