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:
Apr. 20, 1993
Filed:
Aug. 28, 1990
Masanori Sakai, Hitachi, JP;
Katsumi Mabuchi, Hitachi, JP;
Toshiaki Arato, Katsuta, JP;
Takuya Takahashi, Hitachi, JP;
Masakiyo Izumiya, Mito, JP;
Isao Masaoka, Hitachi, JP;
Yoshitaka Kojima, Hitachi, JP;
Masahisa Inagaki, Hitachi, JP;
Katsumi Ohsumi, Hitachi, JP;
Makoto Hayashi, Hitachi, JP;
Fumio Sato, Hitachi, JP;
Masateru Suwa, Tohkai, JP;
Kimihiko Akahori, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A plant operational status monitoring supervisory system comprising; means for extracting information directly relating to water quality of an objective portion consecutively for a period of time by means of an electrochemical water quality sensor installed in an objective portion to monitor in-situ in a plant; means for evaluating water quality based on thus extracted information; means for comparing an obtained water quality evaluation result with a reference value for a predetermined plant operation procedure; and means for displaying or storing necessary portion out of said comparison results; is disclosed. An electrochemical reference electrode used in this system being provided with an electrolyte layer containing ion of the electrode member; a porous ceramic layer surrounding the same without permeating liquid; and electrode member electrochemically contacting with said elec-trolyte layer; and a terminal electrically contacting with said electrode member; and further having a long life in high temperature water, various status of high temperature water in objective portions and that of nearby constituent members in a plant are possible to be monitored online by means of this reference electrode. Further, because monitored data are processed by means of a neural network, the higher precision level of monitoring has been achieved.