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WR口K series armoured thermocouple

Armored thermocouples have many advantages such as flexibility, high voltage resistance, fast thermal response time, and ruggedness.

Armored thermocouples have many advantages such as bending, high pressure resistance, fast thermal response time, and durability.It is the same as industrial assembled thermocouples.As a sensor for measuring temperature, it is usually used together with display instruments, recording instruments and electronic regulators. At the same time, it can also be used as a temperature sensing element for assembled thermocouples. It can directly measure the temperature of liquid, steam and gas medium and solid surface in the range of 0 ℃ -800 ℃ in various production processes. (C25N20, GH3030, GH30393YC-52 can also be provided as the outer protective tube material, the temperature range can be up to 0-1200 ℃

category Code Index number Outer diameter of casing mm Common temperature ℃ Maximum operating temperature ℃ Allowable deviation △ t
Measurement range ℃ Tolerance value
Platinum rhodium 10-platinum WRPK S ≥ø3 1100 1200 0-1200 ±1.5℃or±025%t
NiCr-CuNi WREK E ≥ø3 600 700 0-700 ±2.5℃±075% t
NiCr-NiSi WRNK K ≥ø3 800 900 0-9000 ±2.5℃±075% t
Copper-copper nickel WRCK T ≥ø3 350 400 200 Stated
-40~±350 ±075%
Iron-copper nickel WRFK J ≥ø3 500 600 0-6000 ±2.5℃±075% t
Note: 1 T is the absolute value of the temperature to be measured.
          2 T mark products should be ordered in consultation with our company,

◆ Thermal response time
When the temperature changes stepwise, the time required for the output of the thermocouple to change to 50% of the step change is called the thermal response time as T0.5.
The thermal response time of the installed thermocouple is not greater than the following table
Thermal response time T0.5s Shell type Insulated
Casing diameter (mm)
2.0 0.4 0.5
3.0 0.6 1.2
4.0 0.8 2.5
5.0 1.2 4.0
6.0 2.0 6.0
8.0 4.0 8.0

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