Vessel for bulk materials

Details Vessel for bulk materials Vessel for bulk materials

1985-08-21

1987-06-30

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

141 95, G01F 2328

Patent

active

046760989

ABSTRACT:
A vessel for bulk materials is described whose level can be continuously determined from outside during the filling or emptying process. To this end, at least one AE (acoustic emission) transducer is mounted at each of the levels of the vessel which determine full or empty states. An acoustic waveguide is provided between the two AE transducers defining full and empty states. Preferably, however, the vessel wall serves as an acoustic waveguide. The AE transducers are connected with an electronic signal processing unit which determines the movement of the bulk material by localization from the difference between the arrival times of the signals generated by friction noises of the bulk material at the acoustic waveguide, which are detected by the two AE transducers.

REFERENCES:
patent: 2668365 (1954-02-01), Hogin
patent: 2990543 (1961-06-01), Rod
patent: 3079596 (1963-02-01), Atkinson
patent: 3930405 (1976-01-01), Renken, Jr.
patent: 4144766 (1979-03-01), Wehrmeister
patent: 4194199 (1980-03-01), Sheperd et al.

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