Condition Monitoring Excellence
This test is used to determine the water content in petroleum products by automatic coulometric Karl Fischer titration, using an oven.
Water contamination in hydraulic fluids or oils is a significant problem. Water produces both emulsions that increase the viscosity and decrease the load bearing ability of the oil. Under load, water can heat and cause either cavitation or Hydrogen embrittlement. All are major causes of increased wear, rusting and sludge build-up, and, when combined with combustion gases in engine oils can form strong corrosive acids. Using coulometric Karl Fischer titration, oil water levels are measured down to parts per million concentrations. The acceptable limit is set by the engine manufacturer. Some specialist oils are designed to form stable emulsions with high water content.
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