Product description: 
 The tungsten rhenium thermocouple is characterized by: hot electrode wire melting point (3300 ° C), vapor pressures, easily oxidized; good chemical stability in a non-oxidizing atmosphere. Electromotive force, high sensitivity, the most important, cheap. 

 Measuring the temperature above 1600 ℃, the use of non-contact method, but the method errors, such as contact with the law can accurately measure the true temperature. In the high-temperature thermocouples, the price of precious metal thermocouple is expensive and the highest temperature only below 1800 ℃, tungsten rhenium thermocouple high temperature upper limit, and good stability, therefore, tungsten rhenium thermocouples in metallurgy , building materials, aerospace, aviation and nuclear industries have been widely used. Rich resources of China's tungsten, tungsten rhenium thermocouples are cheap, can partially replace the precious metal thermocouples (platinum-rhodium thermocouple), it is promising in the field of high temperature test temperature materials. 
 Its maximum operating temperature can reach 2800 ° C, but higher than 2300 ° C, the data dispersion. Therefore, the use of temperature, preferably about 2000 ℃. 

 Tungsten rhenium thermocouple is easily oxidized, suitable for use in inert or dry hydrogen, or use it with oxygen dense protective isolation in order to use. Can not be used for the carbon-containing atmosphere (such as in the hydrocarbon-containing atmosphere, the temperature exceeds 1000 ° C corroded). Easy to generate stable carbides of tungsten or tungsten rhenium in carbon atmosphere, in such a way to reduce its sensitivity and lead to brittle fracture, in the case of hydrogen, accelerated carbonation. 
 Tungsten rhenium thermocouples antioxidant has been a subject of concern to the scholars, and committed to study and solve. Our company adopts the international advanced technology, has successfully developed a fabricated high temperature and high pressure tungsten rhenium thermocouples, the product temperature range of 0 ~ 1800 ° C, widely used in metallurgy, coking, chemical furnaces, heat treatment, glass and other industries, it has a high precision, low price, stable performance, free from the limitations of the work atmosphere, etc., is the ideal product to replace the platinum-rhodium thermocouple. I produced the tungsten rhenium thermocouples are widely used in many units, the performance reached the level of similar foreign products. The technical specifications are as follows: 
 1, sub-degree No.: W-Re3/25, W-Re5/26 
 2, temperature range: 0 ~ 1800 ℃ 
 3, temperature measurement accuracy: <± 1% t; 5MΩ 
 6, Size: 300,500,750,1000,1100 (mm) 
 Tungsten-rhenium molten steel fast thermocouple measurement of molten steel, the molten iron and other metals melt temperature and the design and manufacture, it has a small thermal response speed, high accuracy and low price. The technical indicators are as follows:  
 1, the maximum temperature temperature: 1800 ° C 
 2, the temperature measurement accuracy: ≤ 0.5% 

 Insulation resistance: ≥ 30 MΩ 
 4, measured as ratio: ≥ 98% 
 5, reaction time: <5 s 
 Currently my company production of tungsten rhenium thermocouples into three categories: 

 Restrictions on a class is used in fine ceramic protection tube ceramic tube specifications: diameter Ф8, Ф10 Ф12, Ф14, Ф16, length 300 ~ 1100mm, this type of thermocouple is not working atmosphere in any atmosphere long-term use temperature range is 0 to 1800 ° C 

 Other pure molybdenum protection tube molybdenum tube and tungsten tube specifications: diameter Ф6, Ф8, Ф10mm length of 500 ~ 700mm, only in this thermocouple vacuum, restore or inert gas to protect the environment and long-term work molybdenum tube is the best in temperatures below 1800 ℃ long-term use, short-term use temperature to 2000 ° C; 

 The second category is tungsten protective tube The tungsten tubes in 2100 ℃ under long-term work, but it is difficult to process resulting in its price is very expensive. 

 Please choose according to our parameters appropriate for your thermocouple.