Selection of temperature measuring instruments

This of yours can only be a thermocouple... or infrared…

If an insert-type sensor is required to use an ultra-high temperature thermocouple, the selection of the thermometer sleeve is very important; it depends not only on temperature but also on the pressure of the medium. Traditional materials such as silicon carbide and corundum may not be able to handle such high temperatures as you mentioned. Reference protective tube material: Tantalum – melts at 3000 °C, suitable for inert gas environments, excellent heat cycle resistance ； Can operate at both high and low temperatures; suitable for stone mill furnaces; not suitable for oxidizing environments. Molybdenum (metal): melts at 2600 °C; suitable for inert gas environments; good heat cycle performance ； It can operate at both high and low temperatures; it is suitable for stone mill furnaces but not for oxidizing environments. It is still recommended to use an infrared thermometer, which, by adjusting the probe wavelength, can measure temperatures as high as over 4000 degrees.

The poster should clarify the conditions under which the temperature is measured, as well as relevant parameters such as the medium used for measurement, the maximum temperature, and the normal operating temperature. Only in this way can the suggestions given help to truly solve the problem and assist other sailors as well! Changhui Instruments yunrun.com.cn

Putting aside the operating conditions, it is recommended to use a Type C thermocouple, though it oxidizes quite quickly.