Solutions should be simple and straightforward. So, lets get your questions answered. You'll get plenty of information here to set you on the right course for making decisions. 


What kind of maintenance is required for the ROW?

ROW is designed for minimal user maintenance. Routine cleaning of the lens will keep the ROW working to maximum effect. Re-pressurization of the device is recommended on an annual basis, please consult with your local LDI representative to arrange this service (Plans are being devised).

Is the ROW available in stainless steel?

Due to requests from some of our partners, ROW is now available in a stainless steel version, please contact our team or your local representative today for more information.

Can the ROW set off a local alarm?

Yes, as well as remote alarms, the ROW can be configured and installed according to your requirements to set off local alarms when oil is detected. LDI offers both visible and audible alarm systems, speak to us today to discuss your individual needs.

How much does the system cost?

The ROW comes as standard, but your project is unique. Please contact our team or local authorised representative to arrange a quote for your specific requirements.

Where is the ROW made?

ROW is produced in Estonia, member of the European Union and part of the Eurozone.​


How many ROW’s can be in one network?

In one network we would recommend up to 10 devices per network media converter (can have up to 99), using multiple converters for larger networks to increase stability and security of the system. For support in design and configuration of appropriate networks speak to our team today.

Can the ROW be moved between multiple locations?

Yes, although not recommended, a single ROW can be moved between several mounting points. Be aware that recalibration between each site may be required.​

Can ROW be mounted on a boat?

Yes, during the 2013 open water World Swim Championship in Barcelona the ROW was successfully used to protect swimmers from potential pollution.​

Can ROW be mounted on Oil Rigs?

Yes, ROW can be mounted on an Oil Rig.​

Does ROW work in or underwater? Is it possible to mount it on a ROV?

ROW is designed to work above the water (or land) as a non-contact sensor. In water and underwater systems can become contaminated easily (some have windscreen wipers to keep the viewing field clean) and have several complications regarding installation and maintenance.


We have designed and certified ROW to meet the toughest water resistant standards (IP68). This means that if the device does go underwater, whether it be due to unusually high water levels or large waves, the ROW will continue function and provide surface oil spill detection once the device returns above the water again.

Can ROW be mounted on a buoy or an UAV?

Yes, speak with us today to discuss available options buoy-based ROW.​ For UAV, it can and we are already working with partners on such systems. Sign up to our newsletter to receive updates for availability.


Is the ROW able to detect oil in all weather conditions?

Yes. For areas prone to fog, we recommend installing the ROW closer to targets to improve the effectiveness of the device as low cloud coverage scatters the signal to the device.

Can ROW detect oil at night?

Yes.​ ROW operates 24/7.

Does ROW work on land?

Yes, ROW operates on land or over water. On land oil will need to directly leak or fall into the viewing field of the device, or flow into view via gravity (On water oil spreads rapidly to from thin films).

Can ROW measure the oil dissolved in the water?

Yes, ROW can detect oil dissolved in water.

Will phytoplankton or algae affect the measurement?

As long as phytoplankton and algae are not blocking the ROW from observing the oil, the device will be able to operate normally.

Can ROW detect oil in fast flowing water?

Yes, this is an ideal application for ROW. ROW has been tested and proven to give great results over fast flowing water.

Is ROW able to detect under ice?

Thin and clear ice, such as you can see through with your eyes, will not greatly impair the ROW’s function (not tested). Thick and opaque ice will obscure the ROW’s vision. Consult with LDI or your local dealer if you expect to have significant quantities of ice in your areas. The ROW operates normally for oil on ice.

Is it possible to print out the log files when ROW detects oil?

Yes, see installation manual for guidance on how to do this.​


Does the distance between the sensor and water surface affect the measurement results?

At longer distances, ROW will not be able to detect the thinnest films of 1 micron. The average thickness of an oil slick is 0.1 mm (100 micron), which is possible to detect at up to 10 m. For most installations, 2-5 m is optimal.

Does the oil florescence level changes in proportion with the oil film thickness?

Yes, the thickness of oil affects the signal. For very thick oil films, greater than 0.3mm (that tend to only form in areas where flow is restricted), further increases of oil do not increase the signal.

If there is 2 types of oil contamination at any given time, would that affect the ROW performance, and how?

ROW will detect both oils, and will send an alarm according to how the device is calibrated.

Is it possible to print out the log files when ROW detects oil?

Yes, see installation manual for guidance on how to do this.

Does the sea surface roughness affect the measurement results?

Sea conditions do not affect the measurement result.

What is the area covered by the field of view?

The field of view of ROW is 0.05 - 0.4 m (Ø), focusing on this size of area allows the device to limit the averaged signal measured from the waters surface to reduce false alarms and increase sensitivity. Because oil spreads rapidly on water, in practice the area of water protected is much larger.

Is it possible to print out the log files when ROW detects oil?

Yes, see installation manual for guidance on how to do this.​