The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1986
Filed:
Jan. 28, 1986
Andrew Garner, Pointe Claire, CA;
Douglas L Singbeil, Pointe Claire, CA;
Pulp and Paper Research Institute of Canada, Pointe Claire, CA;
Abstract
A monitor assembly is provided herein for monitoring the effectiveness of anodic protection of a carbon steel vessel containing a corrosive liquor, e.g. pulp digesters. The monitor has two identical carbon steel coupons mounted on a mount rod, one coupon being in electrical connection with the anodically protected vessel, the other being out of electrical connection with such vessel. A reference electrode is mounted on the same mount rod in such a way that the reference electrode, but not the mount rod, is wetted by the liquid contents of the carbon steel vessel. In this novel combination of elements, the mount rod, the metal components of a sealing gland and a metal spacer disc are made of any metal with sufficient mechanical and chemical stability to withstand the corrosive environment of the liquid contents of the carbon steel vessel and the mechanical stress. An electrically non-conductive sleeve and electrically non-conductive spacer elements are formed of any electrically non-conductive material having sufficient mechanical and chemical stability to withstand the corrosive environment of the liquid contents of the carbon steel vessel and the mechanical stress. The reference electrode is formed from any metal which provides a stable potential when exposed to the liquid contents of the carbon steel vessel.