G - Physics – 01 – F
Patent
G - Physics
01
F
73/67
G01F 23/04 (2006.01) G01F 23/22 (2006.01) G01F 23/296 (2006.01)
Patent
CA 1293390
ABSTRACT A level control instrument (1) for controlling and/or indi- cating the filling level for liquid, powdered, granular, especially light-weight bulk material in a container, has one rod-shaped vibrator (2) and, belonging to it, a vibration- exciting and measuring system (8). The vibrator is a rod (2) configured as bending vibrator which is damped by bulk or liquid goods. The damping is controlled by the vibration measuring system, In order to prevent that vibrating energy is transmitted to the container wall (11) the rod (2) con- figured as bending vibrator has two supports (3, 4) with distance (L 3, L 4) to the free ends (5, 7) of the rod (2), the one free end (5) extending into the filling room (6) for bulk goods or the like. If the two supports (3, 4) are at or near to the points where the vibration nodes appear when the rod is excited to bending vibrations it is practi- cally impossible that vibration energy is transferred to the container wall, which makes it possible that this instrument has a high measuring sensitivity especially also for light- weight bulk materials.
536713
Borden Ladner Gervais Llp
Hermann Eberhard F.
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