| 摘要 |
<p>The bulk material, the instantaneous or time-integrated quantity is to be found, passes via an upper chute (2) to a lower chute (3) which defines the speed of the material. The lower chute (3) guides the material to a slide (4) with the same angle of inclination as the lower chute (3). The component of the weight of the material on the slide (4) acting perpendicularly to the direction of the slide (4) is determined by a first dynamometer (5). Downstream of the slide (4), the material falls upon a vertical plate (6) rigidly secured to a baffle plate (8) where its change of momentum generates a force detected by a second dynamometer (7). The second dynamometer (7) measures only the horizontal component of this change in momentum and, like the first dynamometer (5) is parallel guided or has a parallel guide. The two dynamometers (5, 7) are connected via lines (11, 12) to a computer (13) in which are stored the evaluation formula and any correction parameters. The two chutes (2, 3) and the dynamometers (5, 7) are supported by a frame (1). After being weighed, the material falls into a hopper (9).</p> |
