We are pleased to announce the launch of our Tantalum Sheathed Tungsten Rhenium Thermocouple (W Re Thermocouple with Tantalum Tube), a special temperature sensor engineered for ultra high temperature vacuum and inert gas environments. It delivers stable long term performance up to 1700°C, making it the core high temperature sensing element for vacuum furnaces and inert atmosphere heat treatment systems.
This thermocouple features Type C WRe5 WRe26 tungsten rhenium alloy wires (positive: WRe5; negative: WRe26) housed in a high purity tantalum protection tube. Temperature measurement is achieved via the thermoelectric effect of W Re alloys. The standard wire diameter is Φ0.5 mm, with accuracy classes Class 1 (±0.5%t or ±4.0°C) / Class 2 (±1.0%t) to meet industrial precision requirements.
Key Features
Ultra high temperature resistance: Long term service up to 1700°C in vacuum/inert atmospheres; short term exposure to higher temperatures is permissible. Avoid prolonged use in oxidizing environments (air)-tantalum embrittles at high temperatures.
Dense tantalum sheath: Excellent high temperature gas tightness and low leakage rate, effectively isolating the thermocouple wires from furnace atmosphere to prevent oxidation and contamination.
High ductility & durability: Tantalum is more ductile than tungsten/molybdenum, resistant to vibration and installation stress. Suitable for thin wall or custom shapes and easy for sealed welding.
Typical Applications
High temperature vacuum annealing & sintering furnaces
Inert gas protected heat treatment furnaces
Metallurgy, aerospace, and R&D ultra high temperature test equipment
Our Tantalum Sheathed Tungsten Rhenium Thermocouple addresses the limitations of conventional W Re thermocouples (oxidation, short lifespan in vacuum). It is the trusted choice for 1700°C vacuum temperature measurement. Contact us for OEM/ODM customization and your dedicated high temperature sensing solution.