Platinum rhodium thermocouple protection casing problem?

Platinum rhodium thermocouple protection casing problem? Platinum rhodium thermocouple used in hot air stove, corundum protection tube often easily broken, what do you have high temperature resistant metal casing can take the place of corundum tube?

to look at a working temperature and atmosphere in furnace, thermal shock, such as temperature not to exceed 1300 c, can consider to use hartz alloy; Heat pipe is higher than the temperature, corundum tube and the crack, the reason may is as follows: thermal shock; High wind speed; Vibration is big.

if you must use the metal casing to replace fused alumina tube, it is recommended to use the following three types of casing: 1. Use 3 wc52 material; 2. Use molybdenum tube; 3. Use tungsten tube; These can take the place of corundum tube, and no any impact.