EESIFLO has been developing and manufacturing water in oil sensors for more than a decade. Our sensors are monitoring moisture and water content in oil and fuel around the globe. This includes general industry applications for marine systems, engines, purifiers, oil separators, power plants, metering stations, refineries and pipelines. In the crude oil industry, the EASZ-1 is often installed as a BS&W analyser or a watercut meter. 

Our focus is on highly accurate online measurements of water content in hydrocarbons using dielectric principles. The same principle can also be used to measure concentration of a liquid in liquid if the dielectric constant of the liquids are different.

Water in oil monitors are important in the lubrication industry where contamination can degrade the quality of the oil and cause problems for machinery. This is because it is important that the water content never reaches an unnaceptable amount.

Online monitors ensure that operators are able to gather necessary data in realtime, so that a problem can be avoided. In the upstream oil industry, water in oil /water in fuel monitors are normally measuring the “cut” or percentage of water in oil, so these devices are known as watercut meters.  In the downstream side of the industry they are sometimes known as bs&w monitors. What is important is that the same device can measure moisture/water content in a wide range.

EESIFLO has solutions for small and larger measurements including low cut, high cut and full cut meters. Over the last few years, it has become more important for those dealing in refined products to be able to measure very small amounts of water content in fuel which is one of our specialities.


EESIFLO® is also well known as a manufacturer of the clamp on ultrasonic flowmeters for liquid applications. In the last few decades we have supplied several thousands of our flowmeters around the globe. The flowmeters have been used as portable tools to determine flow rates in pipes without cutting them, or as more permanent flow solutions. The most popular units are the Portalok 7s (portable flowmeter) and the Sonalok 7S (stationary version)



Water in Oil Monitors (EASZ-2)

Water in Oil Monitors

The EASZ-2  is a highly accurate online analyzer that is installed in a pipe and measures the amount of water in any oil or hydrocarbon under pressure. Water contamination in oil is often measured for various purposes to prevent loss of revenue, additive depletion, oil oxidation, corrosion, reduced lubricating film thickness...

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Water-cut Analyzers

Water-cut Analyzers

The EASZ-1 Water-Cut Monitor is a tested product with almost 10 years in the field and an impressive client list which includes a large number of existing international oil companies. EESIFLO manufactures the watercut meter in flexible user ranges which cover most upstream and downstream applications.

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Ultrasonic Flowmeter

Ultrasonic Flowmeter

One of the advantages of the Portalok 7S ultrasonic flow meter are its proven track record and its thousands of reliable measurements in almost every imaginable clamp on flow application. The flow meter is extremely popular in flow surveys because of its ability to conduct speedy measurements with minimum user knowledge

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Custody Transfer Static Mixers

Custody Transfer Static Mixers

EESIFLO® EESIMIX Static mixers are a row of carefully designed fixed mixing elements permanently welded within a pipe. The mixers use the full force of the process flow stream to enable mixing between two or more fluids. The static mixer design creates very little pressure drop and the greatest amount of mixing.

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  • Water in Fuel Monitors
  • Water/Oil Measurement Systems
  • BS&W Analysis
  • Oil Centrifuge/Purifier Monitors
  • Research and Development
  • 6000 Series Flow meter
  • Stream Conditioning - Mixing