Fully sealed epoxy encapsulated thermocouple adopts integral resin sealing treatment on terminal and transition section, specially developed for corrosive gas-rich modified plastic and recycled plastic molding workshop where ordinary open-terminal thermocouple is easy to early fail, gradually becoming preferred customized accessory for new energy flame-retardant plastic dedicated hot runner from domestic and YUDO special series. Sealed resin layer completely wraps terminal metal part and wire core transition gap, effectively blocking acidic volatile gas, damp air and oil mist permeating into internal conductor connection position, fundamentally avoiding terminal oxidation rust and internal insulation damp breakdown which are common failure modes of open-terminal ordinary sensors under harsh chemical environment.
Compared with conventional exposed terminal product, encapsulated structure also improves anti-vibration performance; resin fixes internal wire position firmly to prevent core wire shake and partial breakage induced by long-term mold vibration, greatly lowering intermittent open-circuit fault probability. The only shortcoming is slightly higher finished cost and inconvenient on-site short-distance wire modification cutting, so unnecessary full-seal configuration for dry clean ordinary commodity workshop brings unreasonable cost waste.
Professional procurement divides thermocouple into open standard type for general environment and fully sealed encapsulated type for corrosive workshop according to production raw material attribute; production line dealing with PVC, halogen-containing flame retardant and waste recycled plastic uniformly specifies sealed encapsulated structure in purchasing technical clause. Long-term cost statistics prove sealed thermocouple reduces annual replacement frequency by more than two thirds in chemical pollution workshop and brings prominent comprehensive economic benefit for molding enterprises.
