Abstract: The aim of the invention is to provide a dosing device for improved measuring accuracy during the continuous gravimetric dosing of bulk material, in particular combustibles in pulverulent form. To achieve this, two dosing rotors (3, 33) are arranged on the same axis, one above the other, with intermediate or discharge openings (7, 37) being arranged in an offset manner.

Abstract: Disclosed is a device for the continuous gravimetric metering and pneumatic conveying of pourable material which is conveyed across a given distance by a metering rotor (1) which is arranged in a pressure-proof manner in a housing (2) and is provided with conveying pockets (1a). Said housing (2) comprises a charging station and a discharging station for the pourable material, which are connected to the inlet/outlet (4, 5) of a pneumatic conveyor system. The housing (2) is connected to a force metering device which detects the momentary load generated on the metering rotor (1) by the conveyed material. The inlet and outlet of the pneumatic conveyor system are connected to the bottom of the housing (2). In order to build the inventive device in a compact manner while reducing the assembly requirements and improving flow guidance, the flow from the inlet (4) to the outlet (5) is deflected within the upper area of the housing (2).

Abstract: A chain conveyor for gravimetrically measuring/dosing materials, especially bulk materials. The conveyor includes a housing/trough in which at least two chain conveyors with strip-shaped driving elements attached thereto rotate, wherein a measuring bridge that is supported on at least one force measuring device is arranged between the inlet and an outlet hole. The driving elements are mounted with multiple articulations on the conveyor chains, more particularly, said driving elements are inserted with positive-fit by lateral hinge bolts in the chain links located on the upper edge and configured to be placed flatly in the measuring bridge.

Abstract: The aim of the invention is to provide a dosing device for improved measuring accuracy during the continuous gravimetric dosing of bulk material, in particular combustibles in pulverulent form. To achieve this, two dosing rotors (3, 33) are arranged on the same axis, one above the other, with intermediate or discharge openings (7, 37) being arranged in an offset manner.

Abstract: The invention aims at improving the measuring accuracy and simplifying the construction of a chain conveyor for gravimetrically measuring/dosing materials, especially bulk materials. Said conveyor comprises a housing/trough in which at least two chain conveyors with strip-shaped driving elements attached thereto rotate, wherein a measuring bridge that is supported on at least one force measuring device is arranged between the inlet and an outlet hole. According to the invention, the driving elements are mounted with multiple articulations on the conveyor chains, more particularly, said driving elements are inserted with positive-fit by lateral hinge bolts in the chain links located on the upper edge and are configured to be placed flatly in the measuring bridge.

Abstract: A chain conveyor is provided having a more precise measuring/metering capacity and simpler construction. At least one measuring section, preferably a measuring bridge, is located between the inlet opening and outlet opening of the housing, and is supported by at least one force measuring device. The conveyor chain is guided along the measuring bridge on guiding elements which are fixed at the sides. The measuring bridge may be arranged with flexible intermediate elements such that the bridge is decoupled, resulting in the chain forces being compensated as the force measuring device is impinged upon.

Abstract: In order to improve the metering accuracy, especially with a strongly fluctuating feed material supply, a method and an apparatus for continuous, gravimetric metering and mass flow determination of flowable materials are proposed, wherein the output of the metering device (8) is regulated with a time offset to match the set-point flow rate in dependence on the instantaneous mass flow determined at the flowmeter (4).

Abstract: In order to provide a method of gravimetric metering of bulk materials with a calibration facility thus achieving higher weighing accuracy there is proposed a method wherein the pressure in the weighing container is measured and the weighing signal is only transferred from the weighing electronics to be registered when a limit pressure value is attained, especially atmospheric pressure.

Abstract: An apparatus is disclosed for measuring force components exerted by a flowing medium such as air in a wind tunnel upon an object to be measured. The object is rigidly attached to an object carrier movable in a first direction in a first bearing guide member. A first measuring force device connects between the object carrier and the first bearing guide member to restrain movement of the object carrier in the first direction. A second bearing guide member in the first bearing guide member is movable in a plane perpendicular to the first direction with second and third measuring force devices being connected between the first and second bearing guide members to restrain movement of the object carrier in the plane. A third bearing guide member may also be provided on which the second bearing guide member is movable to permit a pivoting movement of the second bearing guide member. All of the bearing guide members are preferably constructed as hydrostatic bearings.