The CellaCast PT 183 was specially developed for mobile temperature measurement of liquid metals. It is used to check the temperature at the automatic casting machine during plugging or ladle casting directly when filling the moulds. This is complicated by the fact that the position of the pouring stream can change depending on the outlet or the tilt angle of the ladle. The special feature of the CellaCast PT 183 is the rectangular measuring field. As long as the pouring stream is within the measuring field, a reliable measured value is determined. Furthermore, the CellaCast PT 183 can be used to determine the temperature when transferring the metal from the melting or holding furnace into the transport ladle or pouring ladle.