Skip to Content
Find More Like This
Return to Search

Flexible high-temperature pH probe

United States Patent

April 22, 2003
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A flexible pH probe device is provided for use in hot water and other high temperature environments up to about F. The pH probe includes a flexible, inert tubular probe member, an oxygen anion conducting, solid state electrolyte plug located at the distal end of the tubular member, oxide powder disposed at the distal end of the tubular member; a metal wire extending along the tubular member and having a distal end in contact with the oxide powder so as to form therewith an internal reference electrode; and a compression fitting forming a pressure boundary seal around a portion of the tubular member remote from the distal end thereof. Preferably, the tubular member is made of polytetrafluoroethylene, and the solid state electrolyte plug is made of stabilized zirconia. The flexibility of the probe member enables placement of the electrode into the area of interest, including around corners, into confined areas and the like.
Bielawski; John C. (Scotia, NY), Outwater; John O. (Cambridge, MA), Halbfinger; George P. (Schenectady, NY)
The United States of America as represented by the Department of Energy (Washington, DC)
09/ 828,209
April 9, 2001
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention under a contract number DE-AC12-76SN00052 with the Department of Energy.