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A grain flow measuring system for a flow rate of grain moving along a generally vertical grain flow path. The weight of grain conveyed along the flow path is measured when the grain impinges baffle elements, thereby generating a force corresponding to the grain weight. The force is transmitted to on

A grain flow measuring system for a flow rate of grain moving along a generally vertical grain flow path. The weight of grain conveyed along the flow path is measured when the grain impinges baffle elements, thereby generating a force corresponding to the grain weight. The force is transmitted to one or more load cells.

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1. An apparatus for weighing material being conveyed on a generally vertical flow path, comprising:a flow conditioning portion comprising a flow conditioning baffle assembly; anda flow measuring portion generally downstream in the flow path from the flow conditioning portion and comprising first and

1. An apparatus for weighing material being conveyed on a generally vertical flow path, comprising:a flow conditioning portion comprising a flow conditioning baffle assembly; anda flow measuring portion generally downstream in the flow path from the flow conditioning portion and comprising first and second flow measuring baffle sets and at least one load cell in mechanical communication with the first and second flow measuring baffle sets, the second flow measuring baffle set generally downstream in the flow path from the first flow measuring baffle set, each first and second flow measuring baffle set including a multiplicity of respective generally parallel first and second flow measuring baffle elements, the first and second flow measuring baffle elements disposed such that the material being conveyed in the flow path impinges the flow measuring baffle elements, thereby imparting a force on the flow measuring baffle elements, the force corresponding to a weight of the material being conveyed in the flow path and mechanically communicated to the at least one load cell. 2. The apparatus of claim 1, the flow conditioning portion further comprising a screen assembly disposed substantially upstream in the flow path from the flow conditioning baffle assembly. 3. The apparatus of claim 2, the screen assembly comprising a multiplicity of substantially parallel bars. 4. The apparatus of claim 2, the flow conditioning portion further comprising a structure for conducting a stream of air from the screen assembly. 5. The apparatus of claim 1, the flow conditioning baffle assembly including first, second, and third baffles. 6. The apparatus of claim 5, in which the first baffle of the flow conditioning baffle assembly is disposed upstream in the flow path relative to the second and third baffles. 7. The apparatus of claim 5, in which the first, second, and third baffles are generally V-shaped in cross-section. 8. The apparatus of claim 1, the flow measuring portion further comprising a third flow measuring baffle set having a multiplicity of generally parallel third flow measuring baffle elements. 9. The apparatus of claim 8, in which the first flow measuring baffle elements are generally perpendicular to the second flow measuring baffle elements. 10. The apparatus of claim 8, in which the first flow measuring baffle elements are generally parallel to the third flow measuring baffle elements. 11. The apparatus of claim 1, the flow measuring portion comprising a plurality of load cells. 12. The apparatus of claim 1, the flow measuring portion further comprising a scale basket accommodating the first and second flow measuring baffle sets. 13. The apparatus of claim 12, the scale basket in mechanical communication to said at least one load cell. 14. The apparatus of claim 12, the flow measuring portion further comprising a scale body accommodating the scale basket. 15. The apparatus of claim 14, in which the at least one load cell is mounted to the scale body. 16. The apparatus of claim 1, further comprising a flow control assembly disposed generally upstream in the flow path from the flow conditioning portion. 17. The apparatus of claim 16, the flow control assembly comprising a flow control frame, a pneumatic air cylinder, and a slide, the pneumatic air cylinder in mechanical communication with the slide, the slide accommodated in the flow control frame. 18. The apparatus of claim 16, the flow control assembly comprising a flow control frame, a manual adjusting rod, and a slide, the manual adjusting rod in mechanical communication with the slide, the slide accommodated in the flow control frame. 19. A system for weighing grain being conveyed in a generally vertical flow path, comprising:an inlet assembly;an evacuation assembly downstream in the flow path from the inlet assembly and comprising a first evacuation assembly baffle set; anda scale assembly downstream in the flow path from the evacuation assembly and comprising first and secon d scale assembly baffle sets and a plurality of load cells in mechanical communication with the first and second scale assembly baffle sets, the first scale assembly baffle set comprising a multiplicity of generally parallel first baffle set elements, the second scale assembly baffle set comprising a multiplicity of generally parallel second baffle set elements, the first baffle set elements generally perpendicular to the second baffle set elements,the grain sequentially conveyed through the inlet assembly, the evacuation assembly, and the scale assembly, the grain impinging the first and second baffle set elements, thereby generating a force substantially proportional to an amount of grain being conveyed through said system, the force mechanically communicated to the plurality of load cells. 20. The system of claim 19, the inlet assembly including a tapered structure and a flow control assembly, the tapered structure generally upstream in the flow path relative to the flow control assembly. 21. The system of claim 20, the inlet assembly further comprising a frame accommodating at least a portion of the flow control assembly. 22. The system of claim 21, the flow control assembly comprising a slide disposed in the frame. 23. The system of claim 22, in which the slide is pneumatically or manually activated. 24. The system of claim 19, the evacuation assembly comprising a frame and a screen assembly accommodated in the frame. 25. The system of claim 24, the screen assembly including a multiplicity of substantially parallel bars. 26. The system of claim 24, the frame including structure for conducting an air stream from the evacuation assembly frame. 27. The system of claim 24, the evacuation assembly further comprising second and third assembly baffle sets. 28. The system of claim 27, in which the first evacuation assembly baffle set is disposed generally upstream in the flow path from the second and third evacuation assembly baffle sets. 29. The system of claim 19, further comprising a third scale assembly baffle set having a multiplicity of generally parallel third baffle set elements, the third baffle set elements generally parallel to the first baffle set elements. 30. The system of claim 29, further comprising a scale basket accommodating the first, second, and third baffle sets and in mechanical communication with the plurality of load cells. 31. The system of claim 30, further comprising a scale body accommodating the scale basket and attached to the plurality of load cells. 32. A method of weighing material being conveyed in a generally vertical flow path, comprising conveying the material through a scale assembly, the scale assembly comprising first and second baffle sets, the first baffle set having a multiplicity of generally parallel first baffle set elements, the second baffle set having a multiplicity of generally parallel second baffle set elements, the material impinging said first and second baffle set elements while being conveyed through said scale assembly and thereby generating a force corresponding to the weight of material being conveyed, said force being communicated to a plurality of load cells. 33. The method of claim 32, further comprising conveying the material through an evacuation assembly before said material is conveyed through the scale assembly. 34. The method of claim 33, in which an air stream removes particulates from the material as the material is conveyed through said evacuation assembly. 35. The method of claim 33, in which the material impinges a plurality of evacuation assembly baffles as the material is conveyed through said evacuation assembly. 36. The method of claim 33, in which the material is conveyed through a screen while being conveyed through said evacuation assembly. 37. The method of claim 33, in which the material is metered by an inlet assembly before being conveyed through said evacuation assembly. 38. The method of claim 37, in which the material is metered by a pneumatic ally or manually actuated flow control assembly.