OMD-21 Oil Monitoring Device

OMD-21 Oil Monitoring Device from Deckma Hamburg, a well-known marine equipment manufacturer.

📌 What is the OMD-21?

The OMD-21 is an Oil Content Monitor (OCM) typically used in shipboard oily water separator (OWS) systems to measure the concentration of oil in water being discharged overboard, ensuring compliance with MARPOL regulations (International Maritime Organization – IMO).

📊 Key Features:

• Digital Display: Shows oil content in parts per million (ppm).

• Indicator LEDs:

  • Power

  • Alarm 1 (usually for 15 ppm)

  • Alarm 2 (higher threshold alarm)

  • Error

  • Set Mode

• Control Buttons: For operation and setting alarm thresholds.

• Sample Cell (right side round window): Where the sample water passes through for measurement using optical (light scattering or transmission) technology.

📌 Typical Application:

• Installed as part of an Oily Water Separator (OWS) system on ships.

• Continuously monitors discharged water to ensure oil content remains below 15 ppm, per IMO MARPOL Annex I regulations.

• Will trigger alarms and block overboard discharge if levels exceed limits, routing water back for further treatment.

📦 Deckma Hamburg:

A German manufacturer specializing in marine and industrial monitoring systems, particularly for oil-in-water measurement applications.