Method and system for determining a series of temperature values of a molten metal bath

A system for determining a series of at least two temperature values Tmes(n) and Tmes(n+1) of a molten metal bath comprising a device and a module and the module is adapted to interact with the device, wherein the device comprises an optical cored wire and a detector, the system configured to feed a leading tip of the optical cored wire below the surface of the molten metal bath,

• wherein the module comprises a storage unit, a processing unit and a controlling unit, wherein the storage unit comprises:
• (a1) a storage element for providing a set of data relating predicted temperature values Tpred of a molten metal bath to corresponding measurement profiles MP, each measurement profile being a sequence of steps carried out to obtain the temperature of the molten metal bath;
• (a2) a storage element for supplying a model F(t) describing the temperature development of the molten metal bath with time;
• and
• (a3) a storage element for defining a time step Δt;
• wherein the processing unit comprises:
• (b1) a processing element for selecting a future point in time t(n) and predicting a temperature Tpred of the molten metal bath for the future point in time t(n);
• (b2) a processing element for choosing a measurement profile MP corresponding to a predicted temperature Tpred from a provided set of data relating predicted temperature values Tpred to corresponding measurement profiles MP;
• and
• (b3) a processing element for calculating a predicted temperature Tpred of the molten metal bath based on a measured temperature value Tmes, the model F(t) and the time step Δt;
• and
• wherein the controlling unit comprises:
• (c1) a controlling element for applying a measurement profile MP at a point in time to obtain a measured temperature value Tmes.