The present invention relates to a casting element for a casting installation for transferring liquid metal comprising a plurality of casting elements in successive contact and forming a canal along which the metal can flow, the casting element comprising a tube, notably a ladle shroud, the axis of which corresponds to the axis of the canal. In combination these traits set \u2018Huitan\u2019 apart from all other existing varieties of Campsis known to the inventor. A sleeve is disposed within an annular space defined between an outer peripheral surface of the reduced-diameter portion and an inner peripheral surface of the cladding tube. The shift control valve actuated by the step motor controls the pressure to be supplied to the primary pulley. If the microphone is not connected to the microphone input jack, microphone input of the audio apparatus is automatically muted to reduce white noise. Preferably, linearizing the data includes adding a function that has a probability and magnitude distribution similar to quantification error of the data.