Product Code Database
A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.
Since the salinity affects both the electrical conductivity and the specific gravity of a solution, a salinometer often consist of an EC meter or hydrometer and some means of converting those readings to a salinity reading. A salinometer may be calibrated in either mho, a unit of electrical conductivity, (usually 0-22) or else directly calibrated for salt in 'grains per gallon' (0-0.5). A typical reading on-board ship would be 2 micromhos or 0.05 grains per gallon. A reading of twice this may trigger a warning light or alarm.
In some ships, extremely high quality distillate is required for use in water-tube boilers, where salt water would be disastrous. In these ships, a salinometer is also installed on the feed system where it would alert the engineer to any salt contamination. The salinometer may switch the evaporator's output from fresh-water to feed-water tanks automatically, depending on the water quality., pp. 212-213 The higher quality (lower salinity) is required for the boiler feedwater, not for drinking.
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