During the use of metal detection machines (also known as metal detectors ), common faults and sensitivity adjustment methods are important aspects that users need to understand. Here are detailed answers to these two points:
1, Common faults of metal detection machines
1). Sensitivity issue
Phenomenon: Excessive sensitivity may lead to false alarms, that is, alarms in the absence of metal impurities; Insufficient sensitivity may lead to missed detection, that is, the inability to detect the metal impurities that should be detected.
Reason: It may be due to improper sensitivity settings or external interference (such as electromagnetic interference, vibration, etc.) on the detection equipment.
Solution: Gradually adjust the sensitivity settings according to the product type and production requirements until the optimal state is achieved that can accurately detect without generating false alarms. At the same time, check and reduce external interference sources.
2). Power issues
Phenomenon: Insufficient battery power may cause an alarm or continuous vibration after startup, or the vibration motor may not stop.
Reason: The battery level is lower than the operating voltage.
Solution: Charge or replace the battery immediately to ensure that the battery is fully charged.
3). Equipment malfunction
Phenomenon: Conveyor belt deviation, detection head blockage, abnormal display screen, control module malfunction, etc.
Reason: The internal components of the equipment are aging or damaged, or external factors (such as dust, dirt, impurities, etc.) affect the performance of the equipment.
Solution: Regularly inspect and maintain equipment, clean dust and dirt, and replace aging or damaged components. For complex faults such as control modules, it is recommended to contact the manufacturer for repair or replacement.
4). Environmental interference
Phenomenon: Electromagnetic interference, vibration, and other environmental factors may cause unstable equipment operation, resulting in false alarms or missed detections.
Reason: There are strong electromagnetic fields, vibration sources, etc. around the equipment.
Solution: Place the device away from electromagnetic interference and vibration sources, or take shielding measures to reduce interference.
2, Sensitivity adjustment method for metal detection machine
1). Preparation stage
Ensure that the equipment is preheated and in normal working condition.
Prepare a series of metal standard objects of known size and type for calibration and testing.
2). Preliminary setup
Adjust the metal detector to the highest sensitivity setting and test its ability to detect metal samples.
Place a non-metallic sample on the conveyor belt to ensure that the equipment does not react to the non-metallic sample at the highest sensitivity.
3). Gradually adjust
If the device can accurately detect metal samples at the highest sensitivity but also generates false alarms for non-metallic samples, gradually reduce the sensitivity setting until the optimal state that can accurately detect without generating false alarms is found.
If the device still cannot detect the metal impurities that should be detected at the highest sensitivity, gradually increase the sensitivity setting and check whether the internal components of the device are aging or damaged.
4). Consider product type and production requirements
Select appropriate detection sensitivity based on product type and production requirements. The sensitivity of different products to metal impurities varies, so adjustments need to be made according to the actual situation.
5). Regular inspection and maintenance
Regularly check the sensitivity and stability of the equipment to ensure that it is in optimal working condition.
Clean and maintain the surfaces of equipment sensors and detectors to reduce the impact of dust and dirt on equipment performance.
Through the above methods, users can effectively solve common faults encountered during the use of metal detection machines and adjust the sensitivity of the equipment reasonably to ensure product quality and production safety.
Matters needing attention
Environmental interference: Check and reduce electromagnetic interference and vibration in the environment to ensure that the performance of the metal detector is not affected.
Conveyor speed: Set the appropriate conveyor speed according to the product type and production requirements to ensure production efficiency and accuracy of the metal detection machine.
Regular calibration: Regularly perform calibration procedures to ensure the continuous and stable performance of the metal detection machine. The frequency of calibration should be determined based on the usage of the equipment and the manufacturer's recommendations.
