1、 Daily cleaning and anti fouling

1. surface cleaning
   • Regularly wipe the sensor surface with a clean soft cloth to avoid dust, oil stains, metal shavings, etc. covering the sensing surface. For stubborn stains, a cotton swab can be dipped in a small amount of deionized water or distilled water and gently wiped, but it is necessary to ensure that moisture does not penetrate the interior to prevent short circuits.
   • exampleIf the sensor is used in a metal processing workshop, it is necessary to clean the metal debris attached to the sensing surface daily to prevent signal interference.
2. Internal cleaning (requires professional operation)
   • If dust or impurities enter the interior of the sensor (such as long-term exposure to a dusty environment), it is necessary to contact the manufacturer or professional personnel to disassemble and clean it to avoid damage caused by self disassembly.

2、 Regular inspection and fastening

1. Connection check
   • Cables and connectorsCheck power lines, signal lines, and communication cables for looseness, damage, or oxidation every week. If poor connection is found, tighten or replace the cable.
   • Installation stabilityCheck if the connection between the sensor body and the base is tight to avoid looseness caused by vibration. If the sensor is installed on equipment with high vibration (such as punching machines), shock-absorbing gaskets need to be added.
2. Appearance and structural inspection
   • Check the sensor housing monthly for signs of cracks, deformation, or corrosion. If damage is found, it should be immediately stopped and replaced to prevent damage to internal components.
   • exampleSensors used in humid environments should be replaced promptly and moisture-proof measures should be strengthened if the casing rusts.

3、 Regular calibration and verification

1. calibration cycle
   • It is recommended to calibrate every 3-6 months, with specific cycles adjusted according to usage frequency and environmental conditions. If the sensor is used in high-precision control scenarios (such as precision machining), the calibration cycle needs to be shortened to 1-2 months.
2. calibration method
   • Use standard equipment (such as calibrators) or samples for full range calibration to ensure that the measurement results are consistent with the standard values. After calibration, verification testing is required, such as comparing with known measurement results or conducting practical application tests, to confirm the reliability of the sensor performance.
   • exampleIf the sensor is used to measure the position of a metal object, a standard metal block can be used to simulate the measured object during calibration to verify the accuracy of the output signal.

4、 Environmental Control and Protection

1. Temperature and Humidity
   • temperature rangeEnsure that the sensor operates in an environment between -25 ℃ and+70 ℃ (as specified in the product manual) to avoid component aging caused by high temperatures or icing damage caused by low temperatures.
   • humidity controlIn humid environments (such as coastal areas or rainy seasons), use moisture-proof covers or sealed enclosures to prevent moisture from entering. If the sensor is damp inside, it needs to be dried with a desiccant or the manufacturer should be contacted for treatment.
2. Corrosion and dust prevention
   • Avoid sensors from coming into contact with corrosive gases (such as in chemical plants and electroplating workshops). If it is unavoidable, choose corrosion-resistant sensors or add protective coatings.
   • In dusty environments such as cement plants and mines, regularly clean the dust around sensors and use dust covers to reduce pollution.
3. Anti electromagnetic interference
   • Keep the sensor away from strong electromagnetic sources (such as transformers, high-frequency welding machines). If it cannot be avoided, use shielded cables or metal enclosures to reduce interference.
   • exampleIf the sensor and the frequency converter share the same power supply, a filter needs to be added to prevent harmonic interference.

5、 Maintenance records and troubleshooting

1. Establish and maintain archives
   • Record the date, operation content, and results of each cleaning, inspection, and calibration to facilitate tracking of sensor status and early detection of potential issues.
   • exampleThe maintenance record may include "On December 26, 2025, clean the sensing surface, check that the cable connection is normal, and calibrate with an error of ± 0.1%".
2. Fault handling
   • Abnormal measurement dataCheck if the connecting cables and power supply are normal, and recalibrate the sensor. If the problem persists, it may be due to internal component damage and the manufacturer needs to be contacted for repair.
   • The sensor is not workingCheck if the power, signal, and communication cables are connected correctly, and restart the system. If it still cannot start, it may be a motherboard malfunction and the sensor needs to be replaced.

6、 Long term storage and pre use inspection

1. Long-term storage
   • If the sensor is not used for a long time, it should be stored in a cool, dry, and ventilated room, avoiding direct sunlight and high temperature environments. Regularly (e.g. every 3 months) conduct power on inspections to prevent components from getting damp or aging.
2. Pre activation check
   • Before reactivation, a comprehensive inspection of the sensor's appearance, connecting cables, and performance is required to ensure that there is no damage and accurate measurement before putting it into use.