A near-infrared light source passes through the sample water.

The internal microprocessor calculates the ratio of scattered light to straight light, converting it into a precise ppm value displayed on the front screen. 4. Installation Guidelines

This guide provides an overview of the key sections of the OMD-11 instruction manual, covering installation, operation, and maintenance based on Deckma Hamburg technical documentation. 1. Introduction to Deckma OMD-11

: Provides a 0(4)–20 mA signal for external recording or remote metering. Compact Build

provides details on the 15 ppm alarm settings and IMO resolution compliance. Technical Datasheet: A technical overview and parts list can be found at Mackay Marine Key Technical Specifications Measurement Range 0 – 30 ppm (Trend indication up to 50 ppm) Meets IMO Resolution MEPC.60 (33) requirements Alarm Points

IP 65 (Dust-tight and protected against water jets). Operation and Functionality

Choose an area free from severe vibration, direct sunlight, and ambient temperatures exceeding 55°C (131°F).

Even without the physical document onboard, the routine below is universal. Always cross-check page numbers with your revision:

Run the outlet drain line directly to the bilge tank without backpressure. Electrical Connections

Often caused by air bubbles in the sample pipe. Check sample lines and tighten connections. No Display: Check for 24V DC power supply to the unit.

Use certified calibration fluids or checking glasses provided by Deckma Hamburg to verify higher ppm values. 6. Routine Maintenance Schedule