Platinum rhodium thermocouple used in high temperature salt bath furnace release date: 2019 - 06 - 03 viewed: zero

Platinum rhodium thermocouple used in high temperature salt bath furnace, generally it is easy to damage, among them, the protection tube damage is the main reason of the damage of thermocouple. Currently used platinum rhodium thermocouple protection tube is two layers of high temperature resistant porcelain tube more, this kind of porcelain tube has the advantages of high melting point, corrosion resistance is strong. However, its low mechanical strength, large brittleness, play sharp changes of heat-resistant ability is poor, in high temperature salt bath furnace is easy to crack. The characteristics of platinum-rhodium thermocouple wire series platinum rhodium thermocouple wire, though expensive, is still widely used material of temperature measurement. Coworkers trying to cheap materials to replace both at home and abroad, over the years made a lot of effort, but the effect is not significant. Due to platinum rhodium thermocouple wire oxidation resistance, corrosion resistance, good chemical stability, and thermoelectric performance is stable, so in scientific research and production. Now, platinum, rhodium thermocouple has been widely applied.