| 摘要 |
The invention relates to a load cell, preferably for an aseptic platform scale, which is embodied rod-shaped and includes a force introduction element (1) and a force output element (2) and a force measuring element arranged axially therebetween. In that regard, the force measuring element comprises a bending beam (3), of which the internally located measuring spring parts (12) with the strain gages applied thereon are hermetically tightly enclosed by welded metal parts (4, 5, 6). In that regard, the force introduction element (1), the force measuring element (3) and the force output element (2) are embodied substantially rotationally symmetrically and rounded-off along a longitudinal axis (9), whereby the force measuring element comprises a flexurally stiff pipe sleeve (4) with the bending beam (3) arranged therein. Thereby, the ends of the bending beam (3) are connected with flexurally soft ring elements (5, 6) which are oriented perpendicularly to the longitudinal axis (9), and which are welded with the pipe sleeve (4) at their radial edge area. The invention is characterized in that an overload protection (15) is integrated within the bending beam (3) and/or at least the end face (17) of the force introduction element (1) comprises an O-ring seal (32, 33) and a centering arrangement (35, 36). |
