What Are the Main Hot Runner Thermocouple Products and Their Applications?

Hot runner thermocouples are classified by structure, temperature range, and material, tailored to diverse injection molding needs. Standard threaded thermocouples (M6/M8/M10) are the most common, with replaceable sheaths and universal connectors, suitable for general automotive interiors, home appliances, and packaging molds. Miniature thermocouples (diameter 1.0–2.0mm) are designed for micro-injection molding, such as electronic component housings and medical catheter parts, with fast response and minimal space occupation. High-temperature resistant thermocouples use Inconel 600 or ceramic sheaths, supporting continuous operation at 1200°C, ideal for processing LCP, PPS, and PEEK materials in aerospace and high-performance engineering plastics. Waterproof and corrosion-resistant thermocouples feature PTFE insulation and anti-corrosion coatings, suitable for food contact and medical-grade molds requiring strict hygiene standards. Multi-point thermocouples integrate multiple measuring points in one probe, enabling simultaneous monitoring of manifold and nozzle temperatures, improving efficiency in large multi-cavity molds. Hot runner thermocouple accessories include compensation wires, high-temperature connectors, and calibration tools, ensuring seamless system integration and maintenance. Product selection should prioritize matching the material's processing temperature, mold structure, and environmental conditions to balance performance and cost. For example, multi-point thermocouples are essential for large automotive bumper molds, where uniform temperature distribution across multiple nozzles prevents weld lines and ensures consistent part quality. Meanwhile, miniature thermocouples are indispensable for micro-connectors in the electronics industry, where space constraints demand compact, high-precision temperature sensing solutions.