DBOB is a series of products that consists of low-maintenance items, while this particular electromechanical device is designed for continuous level or volume measurement for hoppers, tanks or silos. This device makes use of an internal motor, which drives a weight suspended by a tape designed of stainless steel. The unit reverses and the weight is drawn back into the upper stop position when reaching the destination, while the distance to which the weight descends is measured electronically, with the unwinding tape internal rotations.