Principle of Operation

LEAKWISE sensors use a patented, high-frequency Electromagnetic Absorption Technique to detect oil on water. Each floating sensor houses a high-frequency electromagnetic energy transmitter and a receiving antenna which continuously monitor the liquid surface.

Since water absorbs more electromagnetic energy than hydrocarbons, changes in the absorption rate of water indicate the presence or buildup of hydrocarbons.
The LEAKWISE sensors not only enable reliable detection of hydrocarbons, but also provide valid indications of the thickness of the hydrocarbon layers and the percent of water in oily emulsions.
LEAKWISE sensors can also be used to detect the interface between any two immiscible liquids with different absorption rates. No other oil sheen monitoring system does this.

Technology Demonstration


LEAKWISE is available in several application-specific models and configurations that have worked continuously for years in the following industries and applications:

Oil / Petrochemical

Refining – Petrochemical – Oil Storage – Pipelines – Oil / Water Separators – Tank Farms – Gas Stations – Stormwater Runoff – Groundwater Remediation

Power Generation and Distribution

Fossil – Nuclear – Hydroelectric – Transformer Switchyards – Remote Substations – Underground Transmission – Cooling Water Systems – Boiler Condensate


Airports – Railways – Parking Areas – Highways


Steel / Aluminum – Pulp and Paper – Edible Oils – Pharmaceutical – Auto Production – Mechanical Workshops


Treatment Intake Protection – Remediation Sites – Stormwater Monitoring – Groundwater Monitoring – Municipal Industrial Water Treatment


Seaports – Rivers / Lakes – Desalination Intake Protection – Jetty Terminals – Drilling Platforms – Monobuoy Terminals