Title:
SEMI-PERMANENT REFERENCE ELECTRODE
Document Type and Number:
WIPO Patent Application WO2004097906
Kind Code:
A3
Abstract:
A semi-permanent reference electrode (100) for use in monitoring and measuring metals in field applications, such as cathodic protection. This electrode (100) has an outer electrode body (105) with a cap (109) and porous plug (106). The outer electrode body (105) is filled with a fill solution (107) which is a saturated salt solution formed from a solid salt. The solid salt is hygroscopic with a low deliquescence point. An opening (110) is provided in the cap to allow moisture into the outer electrode body (105) to combine with the fill solution (107) to maintain the saturated salt solution in the field. This saturated salt solution must maintain a constant pH for use in the semi-permanent reference electrode (100). A wire (108) is used within the outer electrode body which connects to a voltmeter. This voltmeter measures the potential difference between the reference electrode (100) and the field component of interest, which can include pipelines, storage tanks and bridges.
Inventors:
DUNN DARRELL S
BROSSIA CHRISTOPHER SEAN
BROSSIA CHRISTOPHER SEAN
Application Number:
PCT/US2004/009393
Publication Date:
January 06, 2005
Filing Date:
March 19, 2004
Export Citation:
Assignee:
SOUTHWEST RES INST (US)
International Classes:
G01N17/02; G01N27/30; G01N27/31; G01N27/403; H01L; (IPC1-7): G01N17/02; G01N27/31; G01N27/403
Foreign References:
| CH680022A5 | 1992-05-29 | |||
| US4080565A | 1978-03-21 | |||
| US6193865B1 | 2001-02-27 |
Other References:
OEHME F.: "Liquid electrolyte sensors: potentiometry, amperometry, and conductometry", SENSOR-A COMPREHENSIVE SURVEY, PART I, 1991, pages 251 - 254
SOKALSKI ET AL., ELECTROANALYSIS, vol. 11, no. 9, 1999, pages 632 - 636
DATABASE CAPLUS
SOKALSKI ET AL., ELECTROANALYSIS, vol. 11, no. 9, 1999, pages 632 - 636
DATABASE CAPLUS
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