초록

A liquid level detection apparatus includes an outer tube of substantially constant diameter. A magnetostrictive wire is supported within the outer tube. An electrical circuit is mounted within the outer tube and is electrically connected to a pickup coupled to the magnetostrictive wire.

대표청구항 ▼

[ What is claimed is:] [1.] A position detector apparatus having a magnetostrictive waveguide extending through a measurement field with at least one magnet moveable through the measurement field for providing disturbances in the magnetostrictive waveguide, the apparatus comprising:an outer magnetic

[ What is claimed is:] [1.] A position detector apparatus having a magnetostrictive waveguide extending through a measurement field with at least one magnet moveable through the measurement field for providing disturbances in the magnetostrictive waveguide, the apparatus comprising:an outer magnetic transmissive tube having a substantially linear sidewall extending between opposed first and second ends;a magnetostrictive wire fixedly mounted in and completely contained within the outer tube;pickup means, disposed in the outer tube and coupled to the magnetostrictive wire, for outputing signals propagating along the wire;circuit means, disposed completely within the outer tube, for coupling electrical signals to the magnetostrictive wire and the pickup means and for transmitting electric signals from the magnetostrictive wire and the pickup means.