Abstract: A method and pneumatic spreading machine control/regulate a metering element. A transfer chamber downstream of the metering element transfers metered material to a conveying line for spreading. A blower charges the conveying line with an air stream. Spreading elements are downstream of the conveying line. Calibration includes actuating metering elements, charged with a particular type and of material, over a predetermined test duration with a predetermined operating parameter. A mass of material metered during calibration is gravimetrically detected downstream of the metering element and upstream of the transfer chamber or in the transfer chamber, following which the material is transferred to the conveying line and dispensed. A functional relationship between the operating parameter of the dosing element and the actual mass flow of material for spreading, metered by means of the metering element, is calculated.

Abstract: A method and pneumatic spreading machine control/regulate a metering element. A transfer chamber downstream of the metering element transfers metered material to a conveying line for spreading. A blower charges the conveying line with an air stream. Spreading elements are downstream of the conveying line. Calibration includes actuating metering elements, charged with a particular type and of material, over a predetermined test duration with a predetermined operating parameter. A mass of material metered during calibration is gravimetrically detected downstream of the metering element and upstream of the transfer chamber or in the transfer chamber, following which the material is transferred to the conveying line and dispensed. A functional relationship between the operating parameter of the dosing element and the actual mass flow of material for spreading, metered by means of the metering element, is calculated.

Abstract: Method for controlling a device for changing the spreading ring sector of a disc spreader including a controllable metering device, a distributor disc arranged underneath the metering device and provided with thrower blades, and the device for changing the spreading ring sector of the granular material on the ground. Functional dependencies of a setting parameter of the device for changing the spreading ring sector on a throwing parameter are stored in a database of a control unit assigned to the device for adjusting the spreading ring sector, and a set point value of the throwing parameter or of the setting parameter corresponding thereto is input in the control unit. An actual value of the throwing parameter is determined using a sensor, arranged near to the circumference of the distributor disc, and the actual value of the throwing parameter is compared with the set point value thereof in the control unit.

Abstract: Method for controlling a device for changing the spreading ring sector of a disc spreader including a controllable metering device, a distributor disc arranged underneath the metering device and provided with thrower blades, and the device for changing the spreading ring sector of the granular material on the ground. Functional dependencies of a setting parameter of the device for changing the spreading ring sector on a throwing parameter are stored in a database of a control unit assigned to the device for adjusting the spreading ring sector, and a set point value of the throwing parameter or of the setting parameter corresponding thereto is input in the control unit. An actual value of the throwing parameter is determined using a sensor, arranged near to the circumference of the distributor disc, and the actual value of the throwing parameter is compared with the set point value thereof in the control unit.