Method and apparatus for continuous measurement of the temperature of electroconductive melt and the thickness of refractory lining

Simultaneous measurements of the temperature are taken at different points in time along with discrete measurements of the thickness of the refractory lining of the melt vessel. The temperature are measured at two exactly fixed cross-sections spaced along a system of heat-conductive bodies, with each body having a diameter smaller than the diameter of wetting by the electroconductive melt of all the bodies, the temperature indicator being incorporated in the refractory lining. Two thermoelectric sensors are disposed at the sections at a preset distance from one another, which are beyond the consumable portion of the indicator, and a thickness indicator of the refractory lining which consists of a system of electroconductive bodies, each of which has an effective diameter smaller than the diameter of all the bodies being wetted by the respective melt, and disposed within the refractory lining and forming a preset number of numbered normally electrically open contacts which are closed as a result of the progressive wear of the refractory lining.