Based on your previous focus on the installation, debugging, and accuracy control of LVDT sensors in hot runner scenarios, this type of composite temperature sensor that directly contacts the molten material has the following core characteristics and application points:
Structural Characteristics: Integrates a thermocouple/platinum resistance thermometer and a temperature probe, directly inserted into the hot runner to contact the molten material. The temperature response speed is 3-5 times faster than non-contact sensors, and the temperature measurement accuracy can reach ±0.5℃.
Adaptability Advantages: Can acquire the actual temperature of the molten material in real time, avoiding the temperature difference deviation between the hot runner wall temperature and the internal molten material, accurately matching the stringent temperature control requirements of injection molding processes.
Installation Precautions: The probe insertion depth into the runner should be controlled within 3-5mm. Too long an insertion depth will interfere with melt flow, while too short an insertion depth will cause temperature measurement lag. Ensure proper sealing to prevent melt leakage.
Maintenance Points: Regularly disassemble and clean the probe surface to remove carbon residue, avoiding prolonged contact with high-temperature molten material that could cause aging and drift of the temperature sensing element. Calibrate the temperature measurement accuracy every 6 months.
These types of sensors can significantly improve the temperature control stability of hot runners, making them suitable for high-precision injection molding production scenarios.
