Title:
容器内の所定の充填レベルを決定及び/又は監視する装置
Document Type and Number:
Japanese Patent JP2004526251
Kind Code:
A
Abstract:
A device for establishing and/or monitoring a predetermined fill level in a container is provided, which also operates stably in liquids with surface waves, which includes: a mechanical oscillatory structure placed at the height of the predetermined fill level, an electromechanical transducer, which in operation excites the oscillatory structure to resonance oscillations, and a receiver- and evaluation-unit, which serves for determining from the resonance oscillation whether the predetermined fill level has been reached, or not, in which a shape of the oscillatory structure is so constructed that the resonance frequency changes only slowly with immersion depth in the case of immersion in the region of the predetermined fill level.
Inventors:
Lopatin, Sergeya
Application Number:
JP2002577515A
Publication Date:
August 26, 2004
Filing Date:
March 16, 2002
Export Citation:
Assignee:
ENDRESS + HAUSER GMBH + CO.KG
International Classes:
G05D9/12; G01F23/296; (IPC1-7): G05D9/12
Attorney, Agent or Firm:
Yoshiyuki Osuga