In one embodiment, a technique determines whether configured logical bandwidth allotments for logical channels are supported by maximum available physical bandwidths of physical channels assigned to those logical channels. The method includes preparing a sensor assembly including a housing, an air cover, an insulation porcelain, and a sensor element, pressing the air cover against the housing to fit an end of the air cover on an end of the housing to form an overlap thereof, and welding the air cover to the housing over the overlap. The composition of the invention makes it possible to improve the appearance of the skin, immediately as well as in the longer term, and to mask the imperfections andor signs of ageing of the skin while maintaining a natural appearance of the skin.