Mineral insulation thermocouples, commonly referred to as MgO (magnesium oxide) thermocouples, are used in many laboratory processes and applications. They are available in thermocouples J, K, T, E, N and a wide range of different diameters and sheath materials. Their nature is flexible and bendable, and their relatively high temperatures make MI thermocouples suitable for many measurement applications. Temperature makes it a popular option.

The complete set is thermocouple and thermowell because the thermocouple is inside the protective sheath, which means that corrosive fluids do not damage the sensor sheath, and if damaged, it is applied to the body of the thermocouple and the sensor can be easily replaced from the head or head during repairs. And there is no need to empty the tank or furnace. In times when the temperature, pressure and fluid flow are high, frequency weakness calculations must be performed for the thermowell, which is done according to ASME PTC19.3 standard and the dimensions are provided along with the map.