The maintenance of the sensor is a key link to ensure its long-term stable operation and accurate measurement. In daily maintenance, it is first necessary to regularly clean the surface of the sensor to remove impurities such as dust and oil, so as to prevent it from affecting the sensitivity and accuracy of the sensing element. Secondly, check whether the sensor connection line is firm and non-destructive to avoid signal transmission interruption or error. At the same time, according to the sensor type and use environment, timely calibration to ensure the accuracy of measurement data. In addition, it is necessary to pay attention to the operating environment of the sensor and avoid exposure to extreme temperatures, humidity or corrosive gases, which may accelerate the aging or damage of the sensor. Finally, the establishment of maintenance records, regular monitoring of sensor performance parameters, timely detection and treatment of potential problems, is an important measure to extend the service life of the sensor and improve production efficiency. To sum up, careful maintenance work is essential to ensure the reliable operation of the sensor.