Water monitoring for Engine fuel or Lubrication, Turbines, Thrusters, Azipods, Gears, Separators, Vacuum Oil Dehydrators, Basket Type Oil Centrifuges, High Speed Purifiers and various Filtration Systems and Stabilizers

Online Sensor Measures any Water in Lubricating Oils and Hydraulic Fluids and makes it possible to correlate with laboratory tests.
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It is almost certain that some amount of water is present in hydraulic and lubrication systems. Because of its destructive potential, hydraulic and lubrication systems are best operated with no free or emulsified water present. Water normally enters a system through external influences; the most common sources are moisture from the surrounding air entering through reservoir openings and breathers, condensation, “splash” from process water, system wash down water and contaminated new oil. Water contamination accelerates the aging process resulting in oxidation, hydrolysis, additive depletion, reduced lubricant film strength, corrosion and damaged components. Most of these expensive problems can be avoided by monitoring and controlling the operating fluid’s water content. When oil is delivered , it has to meet certain standards. One of them as an example is below (ASTM D1744) which will report the water contamination in the oil as a ppm value.

SAE Grade	SAE J300
Fuel Dilution (Diesel only)	D3524
Viscosity @ 100° C	ASTM D445
Total Base Number	ASTM DZ846/4739
Water contamination	D1744
Glycol contamination	D2982
Total Acid Number	ASTM D974 & D664
Soot percent by weight	Equivalent to ASTM E1131 (TGA)

Monitoring parts per million or Percent Water

The only acceptable and practical method for monitoring water in oil is to report water concentration as the current standards would report it and example being *ASTM tests. The EASZ-1 water in oil monitor is an online monitoring instrument that reports total water content in your oil at any temperature. The unit is loop powered and temperature compensated so that temperature fluctuations will not affect the dielectric measurements of the instrument. A large volume of oil passes through the compete cell area of the EASZ-1 and since the electronics have a response time of approximately one second, it is possible to know how much water is in your oil, every second of the day , 24 hours a day. It is important to measure total water in an oil process, whether it be dissolved water in oil or free water. The sensor must be robust and able to withstand measurements under free water conditions as well as dissolved water/oil conditions and not drift over time. The EASZ-1 is therefore the perfect instrument to measure water in oil whether synthetic or mineral. The units can be site re-calibrate if necessary against oils of known water content by Karl Fischer methods *ASTM tests or by bone dry oil.

Examples of ASTM tests

ASTM D1744, a volumetric method, is reliable and precise, but there can be reproducibility problems at low water concentrations (200 ppm or less). Soaps, salts from wear debris and sulfur-based additives react with the Karl Fischer and can give a false positive. In fact, a new, clean, dry antiwear (AW) or extreme pressure (EP) oil may give a reading of as much as 200 to 300 ppm.

ASTM D6304, a coulometric titration method (Figure 6), is more reliable than D1744 at low water concentrations and is less prone to interference effects, although again, AW and EP additized oils can show as much as 100 ppm of water.

The most reliable method is ASTM D6304. The oil sample is heated under a vacuum so that any water present in the sample evaporates. Water vapors are condensed and dissolved into toluene, which is then titrated. Because the additives and other interfering contaminants remain in the oil, the condensed water in the toluene is a true indication of water present in the sample.

Specifications for EESIFLO’s online fast response water in oil monitor.

FEATURES/BENEFITS

TOTAL water Measurement
Immediate Response to a change of state
Temperature Compensation
Excellent long term stability and drift free
Recalibrate on site if necessary
Easy to install
No maintenance needed
Loop Powered (2 wire) or 24 vdc (other options available)
Analog and RS 232 full duplex Output as standard
User re-configurable range 0-10000ppm, 0-1%,0-3%,0-10% and 0-25%
Lightweight and Robust
Encapsulated Electronics
RS-485 option allows up to 30 units to be connected in series
Optional HART protocol on request
Fully CE Compliant

EESIFLO MODEL EASZ-1 SPECIFICATIONS

GENERAL
Water in Oil range Recommended Flow Range Resolution Temperature compensation Temperature range Shipping Weight	0-10000ppm, 0-1%,0-3%,0-10% and 0-25% 5 to 150 LPM ±30 PPM Built in Temperature compensation 0-150 °C or 300 °F Approximately 1kg/3lbs
MECHANICAL
Cell Construction Material Pipe Connection Maximum Temperature Pressure Rating	316L 1 inch NPT thread (other threads/sizes available) 150 °C/300 °F 16 Bar /230 psi (higher pressure consult factory)
ELECTRICAL
Power Requirements Electronic Protection Operating Temperature Enclosure Outputs Options	Loop Power or 24 vdc (grounded or ungrounded) IP 65 -40 °F -185 °F (-40 °C to 85 °C) Anodized Aluminium Epoxy Coated 4-20 mA DC , RS232 Full Duplex ,Optional RS485 Remote readout/display

Oil in water monitors are used to detect the presence of hydrocarbons in water. Several measurement technologies are available. Gravimetric devices add an extractive additive to a water sample and then boil off the water, leaving hydrocarbons that can be weighed. Colorimetric devices use a catalyst to change a sample's color for comparison to a color chart or analysis with a spectrophotometer. Infrared (IR) oil in water monitors measure the amount of absorbed energy and include a submersible, coated fiber cable that draws hydrocarbons from the water and onto the fiber for analysis. Ultraviolet (UV) monitors are similar to IR devices, but do not extract hydrocarbons from water. Instead, they emit UV light at a specific wavelength to determine the amount of light that is absorbed. Fluorescence devices also use a UV light source, but measure fluorescence intensity rather than light absorption. Similarly, light scattering devices measure how oil in water causes light to refract in a predictable manner that can be monitored. Measurement technologies for oil in water monitors also include radar, microwave, acoustic, and capacitance methods. Typically, these techniques are used to measure separated hydrocarbons such as slicks of oil on bodies of water.

Selecting oil in water monitors requires an analysis of performance specifications, user interface options, and special features. Performance specifications include concentration range, process media temperature, and operating temperature. Typically, concentration range is measured in parts per million (ppm). Some oil in water monitors display hydrocarbon amounts with an analog meter or simple visual indicator. Others use digital displays or video outputs such as cathode ray tubes (CRTs), flat panel displays (FPDs) or liquid crystal displays (LCDs). Devices with manual controls have a simple front panel with knobs or potentiometers. Products with programmable digital panels, computer interfaces, and integral software are also available. Some oil in water monitors are temperature compensated, battery powered, event triggered, or explosion-proof. Others include signal processing or filtering capabilities. Devices with built-in calibration and self-diagnostics are commonly available.

There are many applications for oil in water monitors. Most devices are used to detect crude oil, diesel, gasoline, jet fuel, kerosene, phenol, styrene, heat transfer fluids, transformer oils, lubrication oils, hydraulic oils, or aromatic solvents. Some devices are also used to detect benzene, toluene, ethylbenzene, and xzylene (BTEX), a group of volatile organic compounds (VOCs) found in petroleum hydrocarbons and other common environmental contaminants. Oil in water monitors are used in oil refineries, power generation facilities, petrochemical plants, and liquid hydrocarbon pipelines. They are also used in sewage, wastewater, storm water collection, and water cooling systems.

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