WRE5/26 ultra-high temperature tungsten rhenium thermocouple

1、 Overview：
High temperature tungsten rhenium thermocouple is a high-temperature resistant thermocouple. It has the advantages of good linear relationship between temperature and potential, reliable thermal stability, and low price. With Xian

Equipped with display instruments, it can directly measure the temperature of liquid, steam, and gas media. It can partially replace platinum rhodium thermocouples as a high-tech metallurgical tool

Structural engineering of high-temperature electronic thermoelectric systems and space vehicles, as well as ultra-high temperature measurement tools for nuclear reactors.

Tungsten rhenium thermocouples can be used in vacuum, reducing, and inert atmospheres within the temperature range of 0-2300 ℃. Tungsten rhenium couples with special protective tubes can also be used for a long time in an oxidizing atmosphere at 1600 ℃.

2、 Temperature tolerance of tungsten rhenium thermocouple:
Temperature range of 1300~1700 ℃ with a tolerance of 0.5% ∣ t ∣
0~2300 ℃ tolerance 1% ∣ t ∣
3、 Room temperature insulation resistance: The tungsten rhenium thermocouple operates at an ambient air temperature of 20 ± 15 ℃ and a relative humidity of no more than 85%, with the thermoelectric electrode and external protection

The resistance between pipes should be greater than 100M Ω. m.

4、 External protection tube of WRe 3/WRe25 thermocouple:

(l) Silicon carbide tubes (Sic) can be used in oxidizing atmospheres below 1600 ℃
(2) Molybdenum disilicide tube (Mosi2) is used in air below 1600 ℃ and certain corrosive atmospheres
(3) Molybdenum tubes (Mo) are used in vacuum below 2300C
(4) Tantalum tube (Ta) is used in vacuum below 2300C