Assembled thermocouple

    1、Insulation resistance: when the ambient temperature is 25 ± 10 ℃ and the humidity is ≤ 80%, the insulation resistance shall be ≥ 100M Ω. m

    2、Insertion depth：100～3500mm

    3、Time constant: protective tube ф 16、  ф 20 ≤ 90s, tapered pipe ≤ 180s

（3）Model, characteristics and scope of application