Deckma Omd11 Manual [exclusive] 【EXCLUSIVE – 2027】
The Deckma OMD-11 Go to product viewer dialog for this item.
is a specialized bilge alarm monitor developed by Deckma Hamburg GmbH. It is designed to continuously monitor the oil content of bilge water before discharge, ensuring it meets international environmental standards. Core Function & Compliance
Purpose: Acts as a 15 ppm (parts per million) bilge alarm unit, typically used in conjunction with oil-water separator units.
Regulatory Standard: Designed to meet the IMO Resolution MEPC. 60(33) requirements for monitoring oil content in marine environments.
Measurement Tech: Utilizes scattered light measurement to accurately calculate oil concentration while suppressing interference from solids (like iron oxide). Key Specifications
Measurement Range: 0 to 30 ppm, with trend indication up to 50 ppm.
Alarm Settings: Standard factory set point is 15 ppm, but it can be adjusted on-site to 5 ppm or 10 ppm via the front panel.
Outputs: Provides a 0(4)-20 mA signal output for external meters or recorders and includes two independent alarm circuits.
Environmental Limits: Suitable for sample water temperatures between +1°C and +60°C and designed with an IP 65 protection rating for harsh marine conditions. Installation & Maintenance Highlights
OMD-11 : 15 PPM Bilge Alarm Monitor || Deckma Hamburg - Shivtech
The Deckma Hamburg OMD-11 is an oil-in-water monitor designed to meet International Maritime Organization (IMO) regulations for bilge alarm units (Resolution MEPC. 60(33)). It continuously monitors oily water discharge, primarily set to a 15 ppm limit. Manual & Technical Documentation
You can access full digital versions of the OMD-11 instruction manual on several technical document platforms:
Complete Manual (PDF): Available for viewing or download at Scribd - OMD-11 Instruction Manual and Yumpu - Instruction Manual Deckma Hamburg. deckma omd11 manual
Technical Product Guide: A concise summary of specifications and installation is hosted by Mackay Communications. Key Specifications & Operation
Alarm Set Points: Standardly set to 15 ppm, though options for 10 ppm or 5 ppm can be adjusted via front panel buttons.
Measurement Principle: Uses scattered light measurement to distinguish between oil particles, solids, and water turbidity.
Signal Output: Provides a 0(4) - 20 mA output (representing 0 - 30 ppm) for external recorders or meters.
Solids Suppression: The OMD-11 is specifically engineered to reduce sensitivity to solids like iron oxide, ensuring fewer false alarms compared to older models. Important Maintenance Notes
Safety: Always isolate the unit from the electrical supply before attempting any maintenance.
Servicing: Repairs and installation should only be performed by skilled personnel. A Manual Cell Clean Unit (Part No. 60580) is a common spare part for maintaining the measuring cell.
Grounding: Proper grounding is critical, especially when operating at high voltages, to prevent interference and ensure safety. OMD-11 Oil-in-Water Monitor Manual | PDF | Relay - Scribd
The Deckma OMD-11 is an oil-in-water monitor primarily used as a 15 ppm bilge alarm on maritime vessels. While it is an older model replaced by newer versions like the OMD-24, it remains widely supported for servicing and calibration. Key Specifications
Operating Range: 0–30 ppm (with a trend indication up to 50 ppm).
Accuracy: Complies with IMO Resolution MEPC. 60 (33) requirements.
Power Supply: 24V AC/DC (standard), with others available on request. The Deckma OMD-11 Go to product viewer dialog
Alarms: Two independent alarm circuits, factory-set at 15 ppm but adjustable between 2–15 ppm.
Response Time: Adjustable operating delay between 2 and 20 seconds. Operating Principle OMD-11 Oil-in-Water Monitor Manual | PDF | Relay - Scribd
The Deckma OMD-11 is a legacy bilge alarm monitor designed to measure the oil content in water discharge on ships. Developed by Deckma Hamburg GmbH, it was engineered to meet IMO Resolution MEPC. 60 (33) standards, ensuring that oily water is not illegally discharged into the ocean. Key Technical Specifications
The OMD-11 is known for its compact design and improved "solids suppression," which prevents non-oil particles (like iron oxide) from triggering false alarms.
Measuring Range: 0–30 ppm (with a trend indication up to 50 ppm). Accuracy: Better than ±5plus or minus 5 ppm according to IMO requirements. Power Supply: Standard 24V AC/DC.
Alarms: Two independent alarm circuits, factory-set at 15 ppm but adjustable between 2–15 ppm. Output Signal: Reversible 0–20 mA or 4–20 mA.
Physical Specs: Weighs approximately 3.5 kg with an IP 65 protection rating. Installation & Operational Essentials
Proper installation is critical for regulatory compliance and accurate measurement.
Proximity: The monitor must be located as close to the oily water separator as possible.
Distance Limit: Under no circumstances should the distance between the monitor and separator exceed 8 meters; a greater distance causes a response delay of more than 20 seconds, breaching IMO regulations.
Mounting: It should be mounted on a rigid vertical surface, ideally at eye level for easy monitoring. Maintenance & Troubleshooting
The OMD-11 manual outlines specific weekly maintenance to ensure longevity and accuracy: Weekly Flush: Flush the measuring cell with oil-free water. A microcontroller compensates for lens soiling by increasing
Cell Cleaning: Use a specialized bottle brush to clean the sample cell tube manually to prevent buildup.
Zero Adjustment: Verify the "Zero" reading using clean water; if the display does not show "0", re-adjust the offset in programming mode.
Calibration: Official calibration cannot be done on-board by crew. It must be performed by the manufacturer or an authorized service provider like Mackay Marine to meet IMO mandates. Diagnostic LED Indicators
The front panel features four main LED indicators for rapid status checks: OMD-11 Oil-in-Water Monitor Manual | PDF | Relay - Scribd
Chapter 5: Calibration and Zero Adjustments – The Most Critical Chapter
This is where ignoring the manual leads to catastrophic false alarms or, worse, failure to detect an actual crankcase explosion.
B. Optical Offset Adjustment (The Service Menu)
This requires the official service code – usually not disclosed to ships’ crew to prevent tampering. However, the manual details the principle:
- A microcontroller compensates for lens soiling by increasing the LED current.
- When the required current exceeds 80% of max, the manual signals: Service required – Clean optics.
Safety tips
- Always start on a higher range if unsure.
- Never measure current by placing the meter directly across a voltage source without using the proper jack and range.
- Inspect test leads for damage before use.
- Use the correct input jack (fused mA vs high-current 10A) to avoid blowing fuses.
- Observe category ratings (CAT II/CAT III) printed on the meter; avoid using the meter in environments beyond its rating.
Training Your Crew Using the Deckma OMD11 Manual
A manual is only useful if the crew can apply it. Create a "One-Page Emergency Card" based on the manual’s Section 11: Emergency Bypass Procedure.
Drill Scenario: Crankcase oil mist alarm sounds during maneuver.
From the Manual:
- Do not stop the engine immediately – dangerous propeller pitch situation.
- Press Alarm Acknowledge (silences horn for 30 seconds).
- Reduce engine load below 50%.
- If alarm persists after 60 seconds, stop engine and open indicator cocks.
- Bypass is only allowed if manual section 11.3 conditions are met (visual inspection of crankcase via drain plug – no smoke).
Post this drill summary in the ECR. The full manual remains the reference for investigation (why did it alarm?).
Chapter 10: Safety Overrides – What the Manual Forbids
The Deckma OMD-11 manual has explicit "DANGER" warnings.
- Never bypass the alarm relay to the engine control system. (Engineers have been prosecuted for this after an explosion.)
- Never weld on the engine without disconnecting the measuring head. The arc flash will destroy the IR diode.
- Never use WD-40 or silicone sprays near the measuring head. The aerosol will coat the optics and cause a permanent "high mist" reading requiring factory cleaning.
