BilgMon 488 Oil Content Monitor – IMO/MEPC 107(49) Certified for Marine Compliance

• Tamper-Proof Data Logging : Automatically records 18 months of discharge history, ready for USCG audits.
• Zero-Downtime Re-Certification : Swap the SmartCell for instant 5-year recertification—no shipping or system shutdown.
• Industrial-Grade Reliability : Designed for serious marine work—secure, sealed, and built to run trouble-free.
• Plug-and-Play System Integration : Comes ready to connect with alarms, PLCs, ship systems, and SkimOIL ® BRUTE OWS units.

Get Your Free Quote Today↗

Call 314-579-9755 today↗

IN STOCK. READY TO SHIP. PROBLEM SOLVED.

SkimOIL® BilgMon 488 units are ready for immediate deployment on vessels or offshore systems—no long wait times.

Request a Quote↗

BilgMon 488 Oil Content Monitor Features

IMO/MEPC 107(49) Certified – Marine-Ready Oil Monitoring BilgMon 488 provides real-time oil discharge monitoring with exceptional reliability. Built for harsh marine environments, it is simple to install, easy to integrate, and designed to keep vessels and offshore systems operating smoothly.

01

Design

• Industrial-grade construction: Secure, sealed, and built to withstand marine conditions and industrial abuse.
• Tamper-proof data logging: Automatically stores 18 months of discharge history, ready for USCG audits.
• Plug-and-play integration: Connects easily to alarms, PLCs, ship systems, and SkimOIL® BRUTE OWS units.
• Zero downtime recertification: Swap the SmartCell for instant 5-year certification—no system shutdown required.

02

PERFORMANCE & COMPLIANCE

• Certified to 15 ppm MEPC 107(49) operating standards.
• SmartCell technology: Monitors multiple oil types (fuel, diesel, emulsions) simultaneously, with automatic fouling recognition for consistent readings.
• Audible & visual alarms: Alerts operators immediately when oil content exceeds limits, with optional dry contacts for system integration.
• Stable, reliable readings: Immune to interference from turbidity, sediments, or bilge particles when using TD-107 fluorescence option.

03

INSTALLATION & MAINTENANCE

• Sealed & secure: Designed to prevent tampering and maintain compliance integrity.
• Easy maintenance: Manual cleaning device keeps the SmartCell operating optimally without complex procedures.
• Flexible deployment: Works as a standalone system (SAMS) or integrated with separators, filters, or process control setups.
• Worldwide standards: Meets USCG, IMO, ABS, BV, CE certifications for marine and offshore applications.

WHY THE BILGMON 488 MATTERS

For marine operations, the BilgMon 488 provides real-time, reliable oil content monitoring without interrupting your system. Its rugged, compact design, automated operation, and plug-and-play connectivity make it ideal for vessels, offshore platforms, and industrial systems.

BilgMon 488 and TPH Monitors for Industrial and Commercial Marine Oil Water Separators

BilgMon 488 Oil Content Monitor

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 have the ability to 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 platforms main controls 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 thru 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.

BILGMON 488

The IMO Res. MEPC.107(49) resolution regulates the design and performance of the oily water separators (OWS) and the 15 ppm Bilge Alarms for machinery space bilges of ships. Each ship must have a certified 15 ppm bilge alarm for measuring the oil content in the discharge water. The 15 ppm Bilge Alarm type BilgMon 488 is approved and certified in accordance with the latest IMO resolution MEPC.107(49) and in addition, designed to meet the particular needs from the crew when processing the bilge water.

These oil content monitors are our default monitor for our BRUTE OWS and bilge filter and come with a 5 year certification which means it is certified to meet IMO/MEPC 107 (49) requirements for 5 years——-as long as the seal on the unit is not broken or missing. After 5 years it has to be re-calibrated to be certified as compliant with regulations. Big trouble awaits you if your monitor is out of certification because you would then be out of compliance with IMO/MEPC 107 (49) requirements and operating illegally. While there are a few recalibration services around, doing that takes you out of operation. The solution or work-around for that is simply getting a new measuring cell and simply installing it on your oil content monitor and you are then instantly recertified for another 5 years——-as long as you don’t break the seal on the measuring cell. It’s a simple quick installation and you’re back in business and back to being certified. Contact us directly for a certified replacement measuring cell.

>>>Click here for a BilgMon 488 Brochure >>>Equipment: Regulations for Service & BilgMon Calibration

SMART CELL

The “SmartCell” oil content monitor meets the requirements of MEPC 107 (49) for monitoring of 3 oil types: Fuel, Diesel and Emulsions. By utilizing the “SmartCell” Detector Array Technology, the OCM analyses all three oil types simultaneously without the need for re-calibration. A manual cell clean devise is included as standard to easily enable routine maintenance. Optical cell fouling is recognized as a leading cause of monitor malfunction or incorrect reading. By simple operation of the manual clean device, the “SmartCell” remains in optimum operating condition. The SMART CELL – BILGE Monitor has been designed specifically for use in conjunction with 15ppm oily-water separator units. It has a specification and performance which meets the requirements of the International Maritime Organisation specifications for Bilge Alarm Units contained in Resolution MEPC 107 (49).

>>>Click here for a Smart Cell brochure

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.

>>>Click here for a TD-107 brochure

SAM’S (Stand Alone Monitoring System)

Some applications for our oil/surface skimmers, oil water separators or oilsmart filters require automatic real time monitoring of different liquid streams. We put together the Stand Alone monitor system (SAMS) originally as a retrofit, but soon started incorporating these stand alone right into a new system. We can build it up with all controls on a stand/skid , a dedicated sampling pump if needed. NEED A SIMPLE SYSTEM ? it can be almost plug and play

For the marine/maritime industries we can even furnish these SAMS with oil content monitors for ships, drilling rigs, wells, O&G exploration and even on moon pool skimming jobs. These units are compliant with IMO/MEPC 107 (49) regulations and meet all USCG/ABS/CE/BV requirements. This is pretty much a world wide standard for the marine and offshore petro operators.

WORLD CLASS EQUIPMENT

Need special controls or monitoring ? Need to monitor fluid conditions real time? Can do. Ph, TDS, TSS? chlorides, phosphates etc etc What do you want to monitor?

We also furnish stand alone monitor (SAMS) systems for discharge, monitoring and process control applications. These stand alone fluid content monitor systems generally take a small side-stream or pumped sample from source-and can be interlocked to PLC (or ?) for controlling your? vwhat do you need?

Bottom LINE on real time sampling:

SAMS can be built to your specs, to include dedicated feed pumps and several levels of explosion proof XP enclosures and controls. These SAM systems can be mounted on their own stand and/or rack/bulkhead mounted. Let’s chat this up, give SkimOIL ® a call!

Frequently Asked Questions