The monitoring and the controlling of temperatures is one of the most important factors to guarantee the required product quality and profitability in induction hardening processes. For these applications pyrometry allows a separate and accurate measurement and documentation of each components temperature.

At progressive hardening processes the inductor moves along the workpiece. To guarantee repeatable and comparable measurement results, fibre optic pyrometers should be used.

For the optimisation of induction heating processes (heating speed and generator power), thermographic systems have proven reliable, because they are capable of measuring the complete workpiece during the heating process.