For customers who use thermocouples, they should know what the role of thermocouples is, and what are their main classifications and performance indicators. In order to adapt to different complex environments, there are already dozens of types of thermocouples, all of which are based on different Among these products, platinum-rhodium thermocouple and tungsten thermocouple are the two thermocouple products with the best performance. These two thermocouples have their own advantages. Let's take a look Simply compare the different advantages of these two products: platinum-rhodium thermocouple platinum-rhodium thermocouple is a relatively traditional temperature measurement thermocouple, its use time is also very long, and its maturity is relatively high. With stable thermoelectric function and strong oxidation resistance, it is suitable for continuous use in oxidative and lazy gas environments. The long-term use temperature is above 1500℃, and the short-term use temperature is above 1900℃. The quality of platinum-rhodium thermocouples is reliable and the inspection is guaranteed. Platinum-rhodium is a traditional temperature measuring element with stable thermoelectric performance and strong oxidation resistance. The long-term operating temperature is 1600 °C and the short-term operating temperature is 1800 °C. The platinum-rhodium thermocouple uses the high-purity platinum-rhodium alloy wire in the 99 corundum protective sleeve, which has high temperature resistance, accurate temperature measurement and high precision. Tungsten-rhenium thermocouple Tungsten-rhenium thermocouple is a high temperature thermocouple. It has the advantages of good temperature-potential linear relationship, reliable thermal stability, and low price. Matching with the display surface, it can directly measure the temperature of liquid, steam and gas medium. It can partially replace platinum-rhodium thermocouple as a high-tech metallurgical industry, high-temperature electronic thermoelectric architecture engineering and space vehicles, and ultra-high temperature measurement tools for nuclear reactors. The relationship between the thermoelectric potential of the tungsten-rhenium thermocouple and the temperature conforms to the ZBN05003-88 graduation table, which is equivalent to the ASTME696-84 standard. In vacuum, reduction, and lazy atmosphere, it can be used in the range of 0 ~ 2300 ℃. Tungsten-rhenium couples with special protection tubes can also be used for a long time in an oxidizing atmosphere at 1600 °C, and their price is lower than that of platinum-rhodium thermocouples. Through the above detailed introduction, the customers who have read this article in detail will have a deeper understanding of platinum-rhodium thermocouple and tungsten-rhenium thermocouple, and look forward to your order! !
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