Title:
少なくとも一つの物理的パラメータを測定及び/又は監視し、振動励起及び振動検出のためにピエゾドライブを有する装置
Document Type and Number:
Japanese Patent JP4242841
Kind Code:
B2
Abstract:
A device for determining and/or monitoring at least one physical parameter of a medium, having at least one mechanically oscillatable unit and at least one drive-/receive unit. The drive-/receive unit excites the oscillatable unit to oscillate, or, it receives the oscillations of the oscillatable unit, as the case may be. The invention includes that in the drive-/receive unit at least one piezo-drive is provided, which has at least one exterior surface. The exterior surface is composed of at least two segments of different polarization, wherein the directions of polarization are directed essentially opposite to one another. The mechanically oscillatable unit is directly or indirectly connected with the exterior surface, so that the mechanically oscillatable unit is excited to a movement, or so that the movement of the mechanically oscillatable unit is received. The movement always has at least two different force components.
Inventors:
Lopatin, Sergeya
Application Number:
JP2004561243A
Publication Date:
March 25, 2009
Filing Date:
December 08, 2003
Export Citation:
Assignee:
ENDRESS + HAUSER GMBH + CO.KG
International Classes:
G01F23/22; G01F23/296; H01L41/09
Domestic Patent References:
| JP10339657A | ||||
| JP2000131118A | ||||
| JP2163982A | ||||
| JP61210879A | ||||
| JP11153472A | ||||
| JP10339655A | ||||
| JP10339656A |
Foreign References:
| WO2001086236A1 | ||||
| EP0875739A1 |
Attorney, Agent or Firm:
Yoshiyuki Osuga