Tungsten Rhenium Thermocouple Mo Tube

I. Core Parameters

II. Product Features

Ultra-High Temperature Limit Measurement: Maximum temperature measurement up to 2200℃ under tungsten tube protection, far exceeding the high-temperature upper limit of ordinary thermocouples, suitable for extreme high-temperature scenarios.

Exclusive Advantages of Tungsten Tube: The protective tube is made of pure tungsten, featuring excellent high-temperature resistance and corrosion resistance, suitable for complex atmospheres such as vacuum and hydrogen.

Accurate & Stable Measurement: Adopts low-drift tungsten-rhenium alloy wire and HfO₂ (hafnium oxide) insulating material, achieving Class 0.5 measurement accuracy with strong data stability.

Flexible Structure Options: Supports single and duplex structures, which can be flexibly selected according to equipment temperature measurement needs, adapting to multi-channel monitoring scenarios.

High-Pressure Environment Adaptation: Customizable integrated high-pressure resistant device to meet temperature measurement needs in high-pressure vacuum environments, expanding the application range.

Reliable Sealing Performance: Sealed and assembled in vacuum or protective atmosphere, with built-in special insulating material to prevent gas leakage from affecting measurement accuracy.

III. Related Component Specifications

IV. Application Scenarios

Core Application Fields

Vacuum Furnace Industry: Ultra-high temperature monitoring of vacuum sintering furnaces, vacuum melting furnaces, and vacuum coating equipment;

Metallurgical Industry: Extreme high-temperature scenarios such as high-temperature alloy smelting, precious metal smelting, and powder metallurgy sintering;

Scientific Research Experiments: Extreme high-temperature environment simulation experiments in universities and research institutes (e.g., material high-temperature performance testing, nuclear fusion experimental devices);

Special Industry: Semiconductor chip manufacturing (high-temperature annealing process), glass fiber high-temperature wire drawing furnaces, and ceramic high-temperature sintering furnaces;

Aerospace: Temperature monitoring of spacecraft thermal protection system testing and rocket engine combustion chambers.

Typical Cooperative Customers

Industrial enterprises and research institutions including NAURA Technology, Hengjin Vacuum, Huaxiang Vacuum, New Metallurgy Hi-Tech Group, CISRI, Kirovgrad Hard Alloys Plant, ELKAT ELECTRONICS, and VALTEC.

V. Product Advantages

Leading High-Temperature Performance: 2200℃ limit temperature measurement capability, with stability under tungsten tube protection far superior to ordinary protective tube thermocouples, adapting to extreme working conditions.

High Material Cost-Effectiveness: Compared with precious metal thermocouples (e.g., Type B, Type R), the procurement cost is reduced by 40~60%, and the high-temperature resistance is better, showing outstanding comprehensive cost-effectiveness.

Strong Customization Capability: Supports customization of single/duplex structure, high-pressure resistant device, and length specifications. Sample delivery can be completed in 10 days at the fastest, adapting to special needs.

Profound Technical Precipitation: As one of the earliest domestic manufacturers engaged in the R&D of tungsten-rhenium thermocouples, the company has more than 10 industry-leading patents and participates in the formulation of multiple national standards.

High Market Recognition: The product's market share ranks among the top in China, winning titles such as "China Excellent Instrument Product" and "Chongqing Famous Brand Product".

Complete Certification & Compliance: Passed international and domestic certifications such as CE, SIL 2, and ISO 9001, which can be directly exported to major industrial countries around the world, with guaranteed compliance.

VI. Frequently Asked Questions (FAQs)

Q: Why can the product only be used in vacuum or inert gas atmosphere?

A: Tungsten material is prone to oxidation failure in oxidizing atmosphere above 800℃, and tungsten-rhenium alloy wire will also experience decreased measurement accuracy due to oxidation. Therefore, it must be used in vacuum, hydrogen, or inert gas atmosphere to avoid oxidative damage.

Q: How to choose between single type and duplex type?

A: The single type is suitable for single temperature measurement point needs, with a simple structure and lower cost; the duplex type can monitor the temperature of the same position or different positions simultaneously, adapting to multi-channel control systems with more reliable redundant design.

Q: Is the tungsten protective tube prone to embrittlement?

A: Pure tungsten material has certain anti-embritlement performance, and the use in vacuum/inert gas atmosphere can further avoid embrittlement. During use, severe impact should be avoided, and the thermocouple should be taken out after the temperature drops below 500℃ when shutting down to extend the service life.

Q: What are the special requirements for product calibration?

A: Calibration can only be performed in vacuum or inert gas atmosphere, with a maximum calibration temperature of 1700℃. The calibration standard refers to GB/T 29822-2013. It is recommended to contact the manufacturer or a professional third-party institution for calibration.

Q: What is the customization range of the high-pressure resistant device?

A: High-pressure resistant devices suitable for different pressure levels can be customized according to customer needs, which are usually adapted to high-pressure vacuum environments. Specific pressure parameters need to be communicated and confirmed with the manufacturer in advance to ensure adaptation to working conditions.

Q: What is the service life of the product?

A: The service life is ≥1000 hours in 2100℃ vacuum environment; ≥500 hours in 2200℃ extreme working conditions. The specific service life is affected by working temperature and atmosphere type, and proper use can extend the service life.

VII. Usage and Maintenance Instructions

During installation, ensure the tungsten protective tube is fully inserted into the measured area, and the insertion depth is not less than 15 times the diameter of the protective tube to avoid measurement errors.

Strictly use the product in the specified atmosphere, and prohibit long-term operation in oxidizing atmosphere (≥800℃) to prevent oxidation of the tungsten tube and thermocouple wire.

Distinguish positive and negative poles during wiring, and keep the junction box away from high-temperature areas (distance ≥30cm) to avoid overheating and aging of terminals, which may affect signal transmission.

Regularly (every 3 months) inspect the appearance and sealing performance of the protective tube. If cracks, damage, or seal failure occur, replace it in a timely manner.

During transportation and storage, cover both ends of the protective tube with protective caps to avoid collision damage; store in a dry and well-ventilated environment (humidity ≤60%RH) to prevent moisture.

Manual Welding

Automatic Welding

Insulation Testing

Laser Marking

Warehouse Managing

Thermocouple Assemble

Vacuum Leak Detection

Surface Polishing

Hot Tags: tungsten rhenium thermocouple mo tube, China tungsten rhenium thermocouple mo tube manufacturers, factory