WRNK Series

Typical Representation: WRNK-191 (Armor Type), suitable for industrial temperature measurement applications, featuring vibration resistance and high-pressure tolerance.

Structure: Typically consists of nickel-chromium-nickel-silicon (KP/KN) thermocouple wire, a protective sheath, and a terminal box, with wire diameter ranging from 1.2 to 4.0 mm.

130 High-Temperature Series

Insertion Depth Specifications: 250mm, 300mm, 400mm, etc., priced between 35~69 yuan, suitable for quenching furnaces, box-type electric furnaces, and other high-temperature environments.

Material Selection: For long-term temperature measurement above 1000℃, use 2520 high-temperature steel or 310 stainless steel protective tube. ??3

Other Categorization Criteria

Armored or Non-Armored?: The armored models (e.g., WRNK) are more suitable for complex working conditions, while non-armored models are commonly used for routine temperature measurement.

Uniformity of graduation number?: All K-type thermocouples comply with the NiCr-NiSi (KP/KN) material standard, with the positive and negative pole compositions being Ni=90:10 and Ni=97:3 respectively.