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US 4,782,709 AGranted
Electromagnetic flowmeter
AssigneeYamatake-Honeywell Co., Ltd.
InventorsTsutomu Goto, Yoshiro Tanaka, Sakae Ishikawa
Life of this patent
Estimating the term…
Abstract
In an electromagnetic flowmeter using a ceramic pipe as a measuring pipe, an electrode inserted in the ceramic pipe includes a ceramic core rod and a conductive portion of a refractory metal. The conductive portion covers a fluid contact end face of the core rod and extends along the longitudinal direction of the core rod. The other end of the conductive portion faces an outer surface of the ceramic pipe, and is opposite the fluid contact end face.
Claims22
An electromagnetic flowmeter comprising:
- a ceramic main member having a hollow interior and an electrode aperture;
- and
- an electrode directly secured within said electrode aperture and forming a shrink-fitted fluid tight seal therewith, said electrode comprising a ceramic core member having a first end exposed to said hollow interior and a second end and a conductive member fabricated from a refractory metal, said conductive member covering substantially all of said first end of said core member and extending toward said second end of said core member.
Dependencies are inferred from the claim text.