Electromagnetic flow meter having an earth ring with a ring plate part and a wall part formed along an outer periphery
AssigneeYokogawa Electric Corporation
InventorsHideaki Yamashita, Yoichi Imai, Yoshihiko Kuroki, Koji Omura
Life of this patent
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Abstract
An electromagnetic flow meter includes a measurement tube having a flange part, the flange part being configured to be coupled to a piping-side flange by a bolt fastening, a lining material configured to cover an inside of the measurement tube and an inner periphery area having a predetermined diameter of a coupling-side surface of the flange part, and an earth ring configured to be placed between the flange part and the piping-side flange. The earth ring has a ring plate part and a wall part formed along an outer periphery of the ring plate part.
Claims17
An electromagnetic flow meter comprising:
- a measurement tube having a flange part, the flange part being configured to be coupled to a piping-side flange by a bolt fastening;
- a lining material configured to cover an inside of the measurement tube and an inner periphery area having a predetermined diameter of a coupling-side surface of the flange part, and
- an earth ring configured to be placed between the flange part and the piping-side flange,
- wherein the earth ring has a ring plate part and a wall part formed along an outer periphery of the ring plate part
- wherein a thickness of the earth ring is changed on a surface thereof facing the lining material.
An electromagnetic flow meter comprising:
- a measurement tube having a flange part, the flange part being configured to be coupled to a piping-side flange by a bolt fastening;
- a lining material configured to cover an inside of the measurement tube and an inner periphery area having a predetermined diameter of a coupling-side surface of the flange part;
- an earth ring configured to be placed between the flange part and the piping-side flange, and
- an annular wall ring configured to be placed between the flange part and the earth ring and having an inner diameter greater than the predetermined diameter of the coupling-side surface of the flange part covered by the lining material,
- wherein the earth ring and the annular wall ring are separately-formed.
An electromagnetic flow meter comprising:
- a measurement tube having a flange part, the flange part being configured to be coupled to a piping-side flange by a bolt fastening;
- a lining material configured to cover an inside of the measurement tube and an inner periphery area having a predetermined diameter of a coupling-side surface of the flange part, and
- an earth ring configured to be placed between the flange part and the piping-side flange,
- wherein the flange part has a projection which is circumferentially formed on the coupling-side surface of the flange part to surround the lining material.
Dependencies are inferred from the claim text.