An Oil content monitor is a device for real-time sampling and measuring of the oil content in a moving stream of water. The new IMO/MEPC 107 (49) oil content monitors for oil water separators perform several functions including preventing illegal “over limits” discharges that occur when the oil content is above 15 ppm, by either shutting down the separator or by putting the separator into a recirculation or recycle mode where the oily bilge water is sent back to the oily wastes holding tanks.
These newer monitors also can alarm the operator with audible and visual alerts as well as having dry contacts out that can be wired into a ship’s or oil platform’s main control systems.
SkimOil’s oil content monitors log the past 18 months’ discharge events, and it is this log that the USCG uses to determine that discharges are in compliance and legal. The log can be downloaded through the onboard output port on the monitor. These monitors are sealed and secured to prevent any tampering. Our marine oil water separators can be USCG/ABS/BV certified only when they use an approved monitor.
At SkimOil we use oil content monitors on our BRUTE marine oil water separators, Bilge Filters and for industrial process measurement purposes. Our marine oil water separators can be USCG/ABS/BV certified only when they use an approved monitor.
About TD-107 Fluorescence Oil Content Monitor
The TD-107 Fluorescence Oil Content Monitor (OCM) is a 5 ppm or 15 ppm bilge alarm for oily water separators based on fluorescence detection technology. The TD-107 Oil Content Monitor is fully certified by the US Coast Guard for use under IMO MEPC 107(49). Fluorescence makes the TD-107 is immune to interference’s by turbidity or particles/sediments in the bilge which impact competing “light scatter” oil content monitors. Because silt / algae / iron oxide / mud, junk and other particles do not fluoresce at oil’s wavelength, they cannot interfere as a ‘false positive’ high alarm that will keep the oily water separator in re-circulation mode without ever pumping down the oily waste holding tanks.

The TD-107 Bilge Oil Content Monitor (OCM) is a non-contact, non-fouling, low maintenance oil-in-water monitor based on fluorescence detection technology. Fluorescence occurs when a molecule absorbs light energy of one specific wavelength and emits light energy of a longer wavelength. Fluorescent compounds each have a unique signature, and these compounds can be displayed as an actual concentration. Fluorescence makes the TD-107 resistant to interferences by turbidity or particles/sediments in the bilge which impact light scatter OCMs. If a substance does not fluoresce at specific wavelengths for the monitored oil molecule, it will not interfere as a ‘false positive’.
The TD-107 Bilge Oil Content Monitor is IMO MEPC 107(49) certified and approved by the USCG for use as a bilge monitor / bilge alarm. It comes equipped with required data logger and can be customized to show system trends. The oil content monitor is designed to be fully automated and low maintenance, with no tubes, valves, filters, or pumps to replace. The system’s one moving part has a life expectancy of greater than 5 years. Routine maintenance involves changing a lamp once a year.
- IMO MEPC 107(49) Certified as OCM / Bilge alarm
- USCG approved / ABS approved / NEMA 4X OCM
- Fluorescence unaffected by sediment / particles
- Non-contact, non-fouling sample flow cell
- Lab-quality accuracy up to parts per billion (ppb)
Source: www.skimoil.com
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