Electrode with electrode surface for magnetically inductive flow meter

• US 20070220991A1
• Filed: 12/21/2006
• Published: 09/27/2007
• Est. Priority Date: 12/23/2005
• Status: Active Grant

• Current Assignee: ABB Patent GmbH (ABB Limited)
• Original Assignee: ABB Patent GmbH (ABB Limited)
• Inventors: Schwiderski, Hans-Werner, Keese, Dieter
• Granted Patent: US 7,509,877 B2
• Time in Patent Office: Days
• US Class Current: 73/861.120
• CPC Class Codes: G01F 1/584 constructions of electrodes, accessories therefor

Abstract

The invention relates to a special electrode surface for electrodes of a flow measuring device. In order to provide more measurement reliability for abrasive substances to be measured, for example in multiphase substances to be measured, according to the invention the size of the active electrode surface (3) is optimized independently of the size of the electrode (2) to be sealed in by means of a coating (4) so that an electrically nonconductive coating leaves free only the electrically active surface (3).

Claims

1. An electrode having an electrode surface for flow measuring devices, particularly inductive flow measuring devices, wherein the size of the active electrode surface (3) is optimized independently of the size of the electrode (2) to be sealed in by means of a coating (4) so that an electrically nonconductive coating leaves free only the electrically active surface (3).

2. The electrode as claimed in claim 1, wherein the remaining surface of the electrode (2) is coated with an electrically nonconductive layer comprising inorganic or organic plastics, or ceramic, or nitrates.