Is there any good way to measure the temperature of a high-temperature electric furnace?

The temperature measurement of a high-temperature electric furnace is a complicated process. The temperature measuring ring is designed according to the heat accumulation of the entire firing process, that is, the combined effect of radiant heat, heat conduction, convection heat and different holding time. It can not only measure the rated temperature of the burned product, but also truly reflect the heating state of the product during the heating process of the high-temperature electric furnace. It can be said that the temperature measuring ring plays an important role in the temperature measurement of the high-temperature electric furnace.