Tungsten-rhenium 5-- W-Re 26 thermocouple 
 Product Code: 002010091502 
 Model: W-Re5/26 
 Product Note: Thermocouple order by agreement 
 Category: → W-Re thermocouple thermocouple 

 1, the classification of W-Re thermocouple. Included in the national standards of China's tungsten rhenium thermocouples in two ways: 
  A, tungsten-rhenium 5-- tungsten rhenium 26, its nominal composition containing tungsten cathode 95%, 5% rhenium, tungsten anode with nominal composition of 74%, 26% rhenium. Indexing number WRe5-WRe26, abbreviated: W-Re5/26. 
   B, W-Re 3 - tungsten rhenium 25, its nominal composition containing tungsten cathode 97%, 3% rhenium, tungsten anode with nominal composition of 75%, 25% rhenium. Indexing number WRe3-WRe25, abbreviated: W-Re3/25. 
  2, tungsten-rhenium thermocouples used. More than the current measured temperature of 1600 ℃, the use of non-contact method, however, the methods of error is greater, such as using contact rule can accurately measure the true temperature. In the high-temperature thermocouples, the expensive precious metal thermocouples and the maximum temperature at 1800 ℃ only the following, and tungsten-rhenium thermocouples not only the high temperature limit, and good stability, therefore, in the metallurgy of tungsten rhenium thermocouples , 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, with the temperature. It is the highest temperature can reach 2800 ℃, but, above 2300 ℃, the data dispersion. Therefore, the use of 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 isolation in order to use it with oxygen. Carbon content of the atmosphere can not be used (as in the atmosphere with the use of hydrocarbons, the temperature is affected by corrosion than 1000 ℃). Tungsten or tungsten-rhenium in carbon-containing atmosphere, easy to form stable carbides, resulting in lower sensitivity and cause brittle fracture, where the presence of hydrogen, will accelerate the carbonation. 
  5, tungsten rhenium thermocouples antioxidant. The product temperature range of 0 ~ 1800 ℃, widely used in metallurgy, coking, chemical furnaces, heat treatment, glass and other industries, it has a high precision, low price, stable performance, the work atmosphere free from restrictions, etc., instead of platinum-rhodium thermocouple is ideal. Performance indicators 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) 
 I particularly note the current produced by W-Re thermocouples divided into three types, one is the use of fine ceramic protection tube, and the other is pure molybdenum protection tube, and then a class is the tungsten protection tube. Ceramic tube specifications: diameter Ф8, Ф10, Ф12, Ф14, Ф16, length 300 ~ 1100mm, these thermocouples are not limited to the work atmosphere and long-term use in any atmosphere, temperature range is 0 to 1800 ℃ of; molybdenum and tungsten tube tube specifications: diameter Ф6, Ф8, Ф10mm, length 500 ~ 700mm, this can only be in a vacuum thermocouple, restore or inert gas protection of the environment and long-term work, preferably molybdenum tube at temperatures below 1800 ℃ under long-term use, short-term use temperatures up to 2000 ℃; The tungsten tube is able to work at 2100 ℃ under long-term, it is difficult to process resulting in the price is very expensive. Please choose our parameters to your thermocouple.