Nordelektro A/S of Copenhagen is marketing a patented water surveyor monitor system developed by engineer B. Dollerup Jensen. The system is specially designed to give continuous and accurate information on the exact water content, down to 0.1 percent, in lubricating oil and heavy fuel oil systems. The Danish firm is represented in the United States by American United Marine Corporation.

Water content is easily readable on a digital instrument, and a light indicates when a pre-set limit in the area of 0.1 to 4.9 percent is exceeded.

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