The pyrometer is a fundamental instrument in the control of the thermal cycle of the kiln. Its main function is to convert temperature variations into numerical readings, allowing to adjust the heating curve, the holds (times at constant temperature) and the cooling process. Thanks to this precise control, the kiln's internal atmosphere can be adapted to the needs of the clay body and glazes used, whether it is an oxidizing, neutral or reducing atmosphere.
Throughout the thermal ascent, the pyrometer helps to avoid sudden temperature rises that could cause cracking or internal stresses in the pieces. Similarly, during cooling, proper monitoring reduces the risk of thermal shock. The use of the pyrometer in combination with other indicators, such as pyrometric cones or the color of the kiln interior, provides a complete picture of what is happening during firing, increasing the reproducibility of results and the final quality of the work.
Interesting Fact
The first pyrometers used in ceramics were mechanical devices with pyrometric cones, but today digital pyrometers allow more accurate temperature control. Some of today's digital pyrometers can be connected to computer systems, generating graphs and programmable alarms that help to optimize the kiln's energy efficiency and repeat firings with high precision.
Helpful Tip
Periodically check the pyrometer calibration if you detect significant deviations in the reading. Reliable temperature control is key to obtaining consistent results on your parts.
