Tungsten Rhenium Thermocouple
Tungsten-rhenium thermocouple is a kind of temperature testing products especially developed for vacuum furnace’s characteristics of with no oxidation atmosphere, high temperature, high sealing requirements; adopting special materials and sealing measures after specific treatment, which ensures that the thermocouple’s pressure rise rate (leakage rate) is less than the overall pressure rise rate of vacuum furnace.
Products Description
Tungsten-rhenium thermocouple is currently the most high temperature resistant metal thermocouple, which could reach 2300C, is the mainly used thermocouple under environment of vacuum, reduction and high temperature. It is with characteristics of good linear thermoelectric, high thermoelectric potential rate, high using temperature, low price. In particular, the development and application of high temperature oxidation resistant tube makes the tungsten-rhenium thermocouple almost cover all application fields and available to replace precious metal thermocouple in most occasions. The commonly used tungsten-rhenium thermocouple has WRE5-WRE26 (Mark C) and WRE3-WRE25 (Mark D), with accuracy of 1.0% t and 0.5% t. The vacuum furnace with using temperature below 1200C could use K, N type thermocouple; and using temperature below 1600C with particularly high precision requirements could use S, R, B type thermocouple, but precious metal thermocouple should not be used in the vacuum environment for a long time.
Products Parameter
Thermocouples specially for vacuum furnace commonly used tungsten-rhenium series' mark C or D as temperature measuring element; high temperature resistance of tantalum (Ta), molybdenum (Mo), tungsten and corundum and high temperature alloy as protection tube; corundum, beryllium oxide, nitrogen boron, hafnium oxide as insulation material, processing and become, only apply to under the condition of vacuum, inert, reducing atmosphere vacuum furnace, cannot be used for oxidizing atmosphere.
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Material of protection tube |
Diameter of protection tube |
Insulation material |
Highest temperature measuring |
Applicable environment |
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High temperature alloy |
φ4mm, φ6mm |
Magnesium oxide (MgO) |
1300 Degrees Celsius |
Vacuum, Inert air |
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Corundum |
φ8mm, φ12mm, φ16mm |
Aluminium oxide ( AlO) |
1600 Degrees Celsius |
Vacuum, Inert air |
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Molybdenum (Mark S/R/B) |
φ6mm, φ8mm |
Aluminium oxide ( AlO) |
1600 Degrees Celsius |
Vacuum, Inert air |
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Molybdenum (Mark C/D) |
φ4mm, φ6mm, φ8mm |
Aluminium oxide ( AlO) |
1600 Degrees Celsius |
Vacuum, Inert air, Hydrogen |
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Tantalum |
φ4mm, φ6mm, φ8mm |
Beryllium oxide (BeO) |
1800 Degrees Celsius |
Vacuum, Inert air |
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Tungsten |
φ6mm, φ8mm |
Boron nitride (BN) |
2000 Degrees Celsius |
Vacuum, Inert air, Hydrogen |
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Tungsten |
φ6mm, φ8mm |
Hafnium oxide (HfO) |
2000 Degrees Celsius |
Vacuum, Inert air, Hydrogen |
Products Pictures
Company information
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Chongqing Haichen Instrument Co., Ltd. was established in June 2000. After years of independent research and development, Haichen now possesses strong production capacity, larger production scale, advanced testing equipment, professional technical team.
Haichen mainly specializes in manufacturing temperature sensors (thermocouple, thermal resistance, bimetallic thermometer, etc.), (signal)isolators, safety barriers, vibration meter and other instruments and meters; also undertakes selection and design, installation and commissioning work for automatic complete sets of instruments and meters.
With the goal of "quality is the life of the enterprise, users are our God", Haichen strictly checks the quality of products, to provide customers with high quality products and first-rate services. |
Company certificates
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Packing and shipping
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 packing for small ones packing for bigger ones packing in cases |
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We could choose delivery by Express (DHL/FedEx/TNT/ARAMEX), by Air, by Sea; Products with storage, delivery in 1-2 workdays; Products custom-made, delivery in 7~60 workdays, it is according to quantity. |
FAQ
Q: Are you trading company or manufacturer?
A: We are factory.
Q: Can you manufacture products according to my design? What information should be provided?
A: Yes, please provide mark, temperature range, size information, material requirement, or detailed drawing.
Q: Do you provide samples? Is it free or charge?
A: Yes, small quantity for trial order is acceptable. But it's not free. Customer has to pay the freight cost.
Q: What is term of delivery?
A: Usually it is EX-WORKS, if need freight cost, please inform quantity and address in advance.
If large quantity and volume, we could quote FOB price.
Q: What is term of payment?
A: Payment less than or equal to 10000USD, 100% T/T in advance.
Payment more than 10000USD, 50% T/T in advance, balance before delivery.
Q: How could I pay?
1. Trade assurance on Alibaba
2. Western Union no bank charge
3. Payoneer is also a choice
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