**Abstract:**
With the increasing automation in industries such as petrochemical, steel, paper, food, and pharmaceuticals, the demand for skilled field instrument maintenance technicians has never been higher. As production processes become more complex, the need for quick and accurate troubleshooting of instrumentation is critical to maintaining operational efficiency, ensuring safety, and maximizing profitability. This paper shares practical on-site maintenance experiences gained through real-world applications, aiming to provide valuable insights and guidance for instrument maintenance professionals. The content includes common issues encountered during maintenance, effective diagnostic techniques, and best practices for minimizing downtime. By sharing these experiences, the intention is to support technicians in improving their problem-solving skills and enhancing overall system reliability. The information presented here is based on hands-on work and real-case scenarios, making it a useful reference for both novice and experienced maintenance personnel in the field.
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Rongxin New Material (Jiangsu) Co., Ltd. , https://www.rongxinxcljs.com