How to Install and Maintain Hot Runner Thermocouples?

Correct installation and regular maintenance are key to extending the service life of hot runner thermocouples and ensuring temperature accuracy. During installation, the probe must reach sufficient depth and maintain close contact with the heating element. Cables should be routed smoothly without sharp bending or stretching to prevent internal wire breakage. Protective sleeves or clips help reduce abrasion from mold movement. After installation, check for tight connections, correct polarity, and good insulation. Maintenance includes regular calibration every three to six months to eliminate temperature drift. Terminals should be kept clean and free of oxidation or carbon deposits. Cables and probes must be inspected for wear, corrosion, or damage. During mold changes, protect thermocouples from impact or extrusion. Proper maintenance reduces failure rates, improves accuracy, and lowers long‑term operational costs. This article introduces standard installation procedures, safe operating rules, routine inspection items, and periodic maintenance plans, forming a complete management system to ensure stable and reliable thermocouple performance.