Product Description 
 First, an overview 
 Tungsten-rhenium thermocouples are temperature thermocouple. It has the potential of a linear relationship between temperature, thermal stability, reliable, low cost advantages. Complete with display instrument for direct measurement of liquid, steam and gases such as temperature. It can partly replace platinum-rhodium thermocouple metallurgical industry as a high-tech, high-temperature electronic structure of thermoelectric systems engineering and space vehicles, nuclear reactors, ultra high temperature measurement tools. 
 Tungsten-rhenium thermocouples thermoelectric power on temperature relations ZBN05003-88 indexing table, the same ASTME696-84 standard. In a vacuum, reduction, inert atmosphere, at 0 ~ 2300 ℃ range. The use of special protection tube can even tungsten rhenium in 1600 ℃ under oxidizing atmosphere and long-term use, its low price compared with platinum-rhodium thermocouple. 

 Second, the tungsten rhenium thermocouple temperature tolerance 
 1300 ~ 1700 ℃ temperature tolerance of 0.5% | t | 
 0 ~ 2300 ℃ Tolerance 1% | t | 
 Third, the insulation resistance at room temperature: W-Re thermocouple in the ambient air temperature of 20 persons 15 ℃, relative humidity less than 85%, hot electrode and the insulation resistance between the outer protection tube should be greater than 100MΩ.m. 
 Four, WRe 3/WRe25 the outer protection tube thermocouple 
 (L) silicon carbide tube (Sic) at 1600 ℃ in oxidizing atmosphere using the following 
 (2) molybdenum disilicide tube (Mosi2) at 1600 ℃ under air and some corrosive atmospheres (supply agreement) 
 (3) molybdenum tube (Mo) at 2300 C in vacuum using the following (supply agreement) 
 (4) Tantalum tube (Ta) in the 2300C uses the following vacuum (supply agreement) 
 Fifth, No. W-Re thermocouple with indexing 
 WRe3-WRe25, WRe5-WRe26 

 Electric Instrument Co., Ltd. Jiangsu Huanya specializing in the production of tungsten-rhenium thermocouples antioxidant, the ideal temperature range is 0 ~ 1500 ℃, its structure is double or triple (not used) protection tube, double tube structure to protect the outer protection Pure corundum tube of special tube, inner tube to protect the MoSi tube, the three outer casing tube of recrystallized silicon carbide protection tubes or special pure corundum tube, middle tube and inner tube with the double protection of the same tube, tube filler high-temperature insulation material (available at 1800 ℃ in the following long-term use), vacuum sealed and then the cold side (300 ℃ sealant in the following long-term use), to ensure that no residual oxygen tube, the product is suitable for vacuum, inert gas reduction, etc. used (0 ~ 1650 ℃), the ideal temperature for the oxidation atmosphere, 0 ~ 1500 ℃. 

 Main indicators 

 Product Name Model No. ASTM dividing number of sub-degree temperature range ℃ Tolerance with atmosphere 
 Tungsten-rhenium thermocouples antioxidant WRW-1500 type WRe3/25 D 0 ~ 1650 ± 0.5% | t | oxidation, vacuum, inert gas reduction, etc. 
 WRe5/26 C 0 ~ 1650 ± 0.5% | t | 

 Product Specifications 

 Model structure protection tube diameter (mm) Protection tube material 
 Within and outside the outside in 
 WRW-1500 type double-tube 166 special MoSi pure alumina tube tube 
 Three-tube 25166 extra virgin extra virgin corundum corundum tube tube tube molybdenum disilicide 
 Three-tube 30166 recrystallized silicon carbide tube exceptionally pure MoSi corundum tube tube 
 Note: Please refer to the principle antioxidant antioxidant characteristics of W-Re thermocouple. 
 About Tungsten rhenium thermocouples used 
 1, the classification of W-Re thermocouple. Included in the national standards of China's tungsten rhenium thermocouple, there are two: 
 A, W-Re 5-- W-Re 26, it's the name of ingredients for the tungsten-positive 95%, 5% rhenium, tungsten anode with nominal composition of 74%, 26% rhenium. Indexing number WRe5-WRe26, abbreviated: W-Re5/26. 
 B, W-Re 3 - W-Re 25, it's positive for the nominal composition 97% tungsten, rhenium 3%, negative nominal composition of 75% tungsten, rhenium 25%. Indexing number WRe3-WRe25, abbreviated: W-Re3/25. 
 2, W-Re thermocouple use. Currently more than 1600 ℃ temperature measurement, the use of non-contact method, however, the methods of error is greater, such as using contact law can accurately measure the true temperature. In the high temperature thermocouple, the precious metal thermocouples are expensive and only the maximum temperature 1800 ℃ below the upper limit of W-Re thermocouple is not only a high temperature, good stability, therefore, in the metallurgy of tungsten rhenium thermocouple , building materials, aerospace, aviation and nuclear industries have been widely used. China's resource-rich tungsten, tungsten-rhenium thermocouples are cheap, can partially replace precious metal thermocouples, it is the field of high-temperature test promising temperature materials. 
 3, temperature. It is the highest temperature can reach 2800 ℃, but, above 2300 ℃, the data dispersion. Therefore, the use temperature, preferably about 2000 ℃. 
  4, using the atmosphere. Tungsten-rhenium thermocouples easily oxidized, for hydrogen in an inert or dry use, or dense protective tube can be used to cut off the oxygen. Carbon-containing atmosphere can not be used (such as hydrocarbons in the atmosphere with the use of temperature above 1000 ℃ that is subject to corrosion). Tungsten or tungsten-rhenium easily generated in the atmosphere of carbon stable carbides, which reduce their sensitivity and cause brittle fracture, where the presence of hydrogen, will accelerate the carbonation. 
  5, tungsten rhenium thermocouple antioxidant. The product temperature range of 0 ~ 1800 ℃, widely used in metallurgy, coking, chemical industry furnace, heat treatment, glass and other industries, it has a high precision, low prices, stable performance, the work atmosphere free from restrictions, etc., instead of platinum-rhodium thermocouple is ideal. Performance indicators are as follows: 
 1, sub-degree numbers: 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) 
 Specified at present I have produced three types of W-Re thermocouple, one is the use of fine ceramic protection tube, the other is pure molybdenum protective tube, and then a class is tungsten protection tube. Ceramic tube specifications: diameter Ф8, Ф10, Ф12, Ф14, Ф16, length 300 ~ 1100mm, the thermocouple is not working atmosphere of these restrictions can be any atmosphere in the long-term use temperature range is 0 ~ 1800 ℃'s; molybdenum and tungsten tube tube specifications: diameter Ф6, Ф8, Ф10mm, length 500 ~ 700mm, such thermocouples only in a vacuum, or inert gas to restore long-term protection of the environment, work, preferably molybdenum tube below the temperature at 1800 ℃ under the long-term use, short-term use temperatures up to 2000 ℃; The tungsten tube in 2100 ℃ under the long-term work, but difficult to processing resulted in the price is very expensive. According to our preferences for your TC. 


 Contact: 13901423890 

 Contact: Mr. Chen 

 QQ: 1186013563 E-mail: 1186013563@qq.com 

 Company: Jiangsu Plaza Premium Electric Instrument Co., Ltd. / Shanghai Kaitai Instrument Co., Ltd. 

 Website: www.cnhuanya.com / www.shktai.com