Abstract: A threshing unit for combine harvesters has a cylinder, an assigned concave, at least one drum situated downstream of the cylinder, redirecting a threshed crop material out of a threshing region, and conveying it further in a direction of a remaining-grain separating device, wherein threshing slats of the cylinder and slats of at least one downstream drum are situated at a distance from one another in a circumferential region of the cylinder, and wherein peripheral speeds of the cylinder and the drum are synchronized with one another such that in a turning and scraping region the slats of the cylinder and the drum are always positioned opposite each other, or in a leading position that slightly deviates from the position opposite each other, or in a trailing position which slightly deviates from the position opposite each other.

Abstract: A threshing unit for combine harvesters has a cylinder, an assigned concave, at least one drum situated downstream of the cylinder, redirecting a threshed crop material out of a threshing region, and conveying it further in a direction of a remaining-grain separating device, wherein threshing slats of the cylinder and slats of at least one downstream drum are situated at a distance from one another in a circumferential region of the cylinder, and wherein peripheral speeds of the cylinder and the drum are synchronized with one another such that in a turning and scraping region the slats of the cylinder and the drum are always positioned opposite each other, or in a leading position that slightly deviates from the position opposite each other, or in a trailing position which slightly deviates from the position opposite each other.

Abstract: A measuring device has a sensor for registering at least one parameter selected from the group consisting of at least one ingredient, at least one property, and both, of a material being investigated by the sensor, the sensor including at least one illumination source which directs at least one light beam toward the material to be investigated, at least one reference object for calibrating the measuring device, and an illumination source configured so that a portion of a light beam from the illumination source is redirected toward the reference object.

Abstract: A measuring device has a sensor for registering at least one parameter selected from the group consisting of at least one ingredient, at least one property, and both, of a material being investigated by the sensor, the sensor including at least one illumination source which directs at least one light beam toward the material to be investigated, at least one reference object for calibrating the measuring device, and an illumination source configured so that a portion of a light beam from the illumination source is redirected toward the reference object.