Abstract: A coating production line system for coating work pieces comprises a coating powder, a coating apparatus, an inspection unit to measure the thickness of the applied coating, a conveyor unit to move the work pieces through the system, and a control unit to use thickness requirements and coating parameters to control the coating apparatus based on said coating parameters with a machine learning instance. A database comprises coating powder characteristics parameter as input vector for the machine learning instance for generating an output vector to control the coating apparatus being a first additional part vector. The control unit determines the coating quality based on a comparison between the thickness data acquired from the inspection unit and the retrieved thickness requirement data as second additional part vector. The first and second additional part vectors are fed back as additional parts to the next input vector for the machine learning instance.

Abstract: A ceramic heating resistor to be arranged in a tubular element of an electrical heating element for heating a fluid, preferably air, wherein the heating resistor can be produced by sintering a green body comprising at least one ceramic raw material. The heating resistor includes an electrically insulating component and an electrically conducting component, and the electrically insulating component forms a matrix in which the electrically conducting component is accommodated. An electrical heating element for heating a fluid, preferably air, including at least one tubular element, through which a fluid flows or can flow, and to a device for heating a fluid, preferably air, including at least one such heating element.

Abstract: A ceramic heating resistor to be arranged in a tubular element of an electrical heating element for heating a fluid, preferably air, wherein the heating resistor can be produced by sintering a green body comprising at least one ceramic raw material. The heating resistor includes an electrically insulating component and an electrically conducting component, and the electrically insulating component forms a matrix in which the electrically conducting component is accommodated. An electrical heating element for heating a fluid, preferably air, comprising including at least one tubular element, through which a fluid flows or can flow, and to a device for heating a fluid, preferably air, including at least one such heating element.