High Temperature Thermocouple

  • High temperature thermocouple
High temperature thermocouple

High temperature thermocouple

  • High temperature thermocouple
  • Product description: In some special occasions, such as chemical plants, smelters, power plants, cement plants, etc., ordinary thermocouples are extremely vulnerable. Therefore, High temperature thermocouple must be used
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In some special occasions, such as chemical plants, smelters, power plants, cement plants, etc., ordinary thermocouples are extremely vulnerable. Therefore, High temperature thermocouple must be used in these cases. The thermocouple is especially suitable for the temperature of the vulcanized bed, coal mill outlet, primary, secondary wind coal and cement industry. High temperature thermocouples are suitable for high temperature applications in various production processes and are widely used in the oil industry, smelting glass and ceramic industry for temperature measurement.
High temperature thermocouple classification:
1, platinum-iridium thermocouple, also known as high-temperature precious metal thermocouple, platinum rhodium has a single platinum rhodium (platinum rhodium 10 - platinum rhodium) and double platinum rhodium (platinum rhodium 30 - platinum rhodium 6), they are used as temperature measuring sensors, usually It is used with temperature transmitters, regulators and display instruments to form a process control system to directly measure or control the temperature of fluids, vapors and gaseous media and solid surfaces in the range of 0-1700 °C in various production processes. Platinum rhodium thermocouple, reliable quality, detection is guaranteed, platinum rhodium is a traditional temperature measuring element, with stable thermoelectric performance, strong oxidation resistance, long-term use temperature of 1600 ° C, short-term use temperature of 1800 ° C. The casing adopts a corundum protective sleeve, and the inner core is a high-purity platinum-ruthenium alloy wire, so that the temperature is high, the temperature is accurate, and the precision is high.
2, K-type thermocouple can directly measure the liquid vapor and gas medium and solid surface temperature range from 0 °C to 1300 °C in various production. K-type thermocouples are the most expensive metal thermocouples currently on the market, and their usage is the sum of other thermocouples. Wide temperature range, with high temperature casing, up to 1300 degrees. However, the K-type thermocouple is the most expensive metal thermocouple currently used, and its amount is the sum of other thermocouples.
3, tungsten-rhodium thermocouple is a high temperature thermocouple. It has the advantages of good temperature-potential linear relationship, reliable thermal stability and low price. It is matched with the display instrument and can directly measure the temperature of liquid, steam and gas medium. It can partially replace platinum-iridium thermocouples as high-temperature metallurgical industry, high-temperature electronic thermoelectric system structural engineering and space vehicle, and ultra-high temperature measurement tools for nuclear reactors. It can be used in the range of 0 to 2300 ° C in a vacuum, reduction or inert atmosphere.

The main consideration of high temperature thermocouples is that the performance of the protection tubes is degraded in high temperature environments. Therefore, there are few protective tube materials that can be used above 1000 degrees. The high temperature thermocouple protection sleeves are shown in the figure below, more than 1000°c. The protective sleeve is divided into a nickel-based alloy material and a ceramic material.

High temperature thermocouple

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