Free and emulsified water can cause contamination in critical fluids, resulting in additive depletion, oxidization, bacterial growth, component wear and corrosion. Before signs of water contamination occur (cloudy appearance of the oil), it is also possible for bearings to lose up to 75 percent of their potential service life. Water causes damage even in its dissolved state, attacking the base stock, additive package and machine. Additionally, water carries organisms that can potentially disable critical hydraulic systems.
Measuring Water Content in Oil
Above this saturation point, any additional water will sit in the oil as water droplets, or it will form an emulsion. This free water can be detrimental to systems, for instance:
Free water can react with the oil's additive package, rendering the oil unsuitable for the application.
Emulsion can reduce the film thickness in bearings and other moving parts, which accelerates wear.
Free water can settle in machine sumps, pistons and filter housings, resulting in corrosion.
As maintenance costs increase and production capacity and equipment efficiency are maximized, remote online sensor technologies are being recognized as the new cost-effective form of analysis. The ANALEXrs range of online sensors are designed to provide plant engineers and maintenance managers with real time, continuously monitored testing and analysis data for critical plants and equipment. The ANALEXrs moisture sensor, which forms part of this range of online sensors, goes beyond the normal water screening tests to indicate the actual dryness of the oil. Providing percent relative humidity (RH) and temperature values, monitoring can now occur in real time. Personnel can ensure oil is always below the saturation point before free and emulsified water forms. The sensor monitors one of the root causes of the machine and lubricant failure, water.
Integration Made Easy
The ANALEXrs moisture sensor measures the oil's percent relative humidity (RH), resulting from the dissolved water within the lubricant, using a combination of proven thin film capacitance sensors combined with smart algorithms to provide a temperature and percent RH value. Using internal processing power, the self-diagnostic sensor does not require handheld units to analyze or display results, which can be reported using standard displays or PCs. Whether verifying the health of a machine or an alert of changing moisture ingression rates, the moisture sensor provides instant information, which compliments existing laboratory programs.
How the Sensor Works
It is suitable for use with diesel engines, gas turbines, gearboxes, compressors, generators and other lubricant-filled equipment. These sensors help to increase productivity, reduce costs and improve profitability.
ANALEXrs equipment can be fitted on any machine with a circulating lubricating system, and where atmospheric, process or coolant issues are a concern. Industries that benefit from the ANALEXrs equipment include:
power generation (steam, nuclear and wind turbine)
pulp and paper
Moisture sensors from Kittiwake form part of a range of new online sensors for condition monitoring and maintenance experts. The ANALEXrs range of online sensors include total ferrous wear debris (PPM), particle content (ferrous and nonferrous) and oil condition (oil quality units).About Kittiwake