Accession Number : ADD010627

Title :   In-Situ Leach Measuring System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Seligman,P F ; Neumeister,J W

Report Date : 01 Mar 1983

Pagination or Media Count : 7

Abstract : A device and method for measuring the antifouling coating leach rates on ships' hulls uses a spherical segment shaped shell that circulates water over a coated area. A pump connected in closed circuit with the shell assures proper flow rate, A second pump creates a partial vacuum and holds the shell on the coated surface. A combination of nozzles and outlet fittings assures that the coating is exposed to a circulating flow of water. A portion of the circulated water is passed through a cupric ion electrode sensor which provides signals representative of the dissolved copper in water over time and, hence, the leach rate of the coating. (Author)

Descriptors :   *Patents, *Antifouling coatings, *Ship hulls, *Leaching, *Measuring instruments, Water flow, Dissolving, Copper, Concentration(Composition), Measurement, Ion selective electrodes, Detectors, Fouling organisms, Cleaning, Pumps, Nozzles

Subject Categories : Coatings, Colorants and Finishes
      Marine Engineering
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE