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:
May. 19, 1987
Filed:
Oct. 11, 1985
Rudolph H Hausler, Des Peres, MO (US);
Allen L Savage, St. Louis, MO (US);
Jack B Harrell, Jr, Friendswood, TX (US);
Petrolite Corporation, St. Louis, MO (US);
Abstract
A system, method and probe for monitoring the corrosion rate of different metals in identical corrosive fluids and under identical conditions, such metals being employed as electrodes other than reference electrodes in a probe having also a reference electrode. The preferred probe comprises a probe body holding at least four electrodes, where one is placed in the center and the others around it in a circle. The center electrode is preferably used as a permanent reference electrode. Each electrode on the circle can then be connected in turn to a channel on a multistation PAIR meter as test and auxiliary electrodes, whereby the corrosion rate on each of them can be monitored in turn. This arrangement greatly enhances the utility of the multistation PAIR meter and with only two entry ports in a system, all channels can serve to answer specific questions on specific electrodes or metals. The novel probe can also be used with a one channel PAIR meter employed with a multi-station manual switch. In an alternative electrode arrangement, the center electrode is used as a permanent auxiliary electrode while the system itself is used as a reference electrode and a plurality of test electrodes are employed.