G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 23/28 (2006.01)
Patent
CA 2310764
The invention proposes a method for continuous level measurement on containers, according to which a sequence of a~ mode Lamb wave pulses is initiated in the container wall (1) by means of a Lamb wave excitor (6) arranged on it, and the propagation time difference (.DELTA.T) between the propagation time (T2) of these a~ mode Lamb wave pulses between the Lamb wave excitor (6) and a Lamb wave receiver (7) (which is arranged at a distance from it on the container wall (1)) for the current level in the container (4), and the propagation time (T1) when the container (4) is empty, is determined, and this is used to derive the current level, which is directly proportional to this propagation time difference (.DELTA.T). Since a~ mode Lamb waves which are initiated in a container wall experience a change in their propagation time between two defined points when a different medium comes into contact with the container wall, the method according to the invention allows continuous monitoring of the level on containers, to be precise with high accuracy.
Getman Igor
Lopatin Sergej
Endress + Hauser Gmbh + Co.
Smart & Biggar
LandOfFree
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