Patent ID: 11898893
Assignee: ABB SCHWEIZ AG
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 5:
6. A non-invasive measurement method, comprising:
a) mounting a base material to a wall of a vessel containing a liquid, the base material comprising a planar portion and an angular shaped portion, the angular shaped portion comprising a plurality of outer faces, a first face of the plurality of outer faces of the angular shaped portion being connected to a first face of the planar portion, a second face of the planar portion opposite to the first face of the planar portion being mounted to the wall of the vessel,
wherein the plurality of outer faces of the angular shaped portion comprises a plurality of second faces,
wherein a first one of the plurality of second faces is contiguous and angled to the first face of the plurality of outer faces of the angular shaped portion at an angle less than an angle of 90 degrees internal to the base material, and is angled to a second one of the plurality of second faces at an angle greater than an angle of 90 degrees internal to the base material,
wherein a third one of the plurality of second faces is contiguous and angled to the first face of the plurality of outer faces of the angular shaped portion at an angle less than an angle of 90 degrees internal to the base material, and is angled to a fourth one of the plurality of second faces at an angle greater than an angle of 90 degrees internal to the base material,
wherein a first piezoelectric element is mounted to the first one of the plurality of second faces,
wherein a third piezoelectric element is mounted to the third one of the plurality of second faces,
wherein a fourth piezoelectric element is mounted to the fourth one of the plurality of second faces, and
wherein a second piezoelectric element is mounted to the first face of the planar portion of the base material at a position adjacent to the angular shaped portion of the base material; and

b) activating the first piezoelectric element the second piezoelectric element, the third piezoelectric element, and the fourth piezoelectric element.