Deckma Omd11 Manual Repack ✯ | EXTENDED |

This is the "brain." It houses the LCD display, keypad, power supply, and the microprocessor. The manual stresses that the central unit is usually located in the Engine Control Room (ECR).

Once powered, the unit automatically samples the water.

The unit should be mounted vertically to ensure bubbles do not get trapped in the measuring cell. deckma omd11 manual

Use the internal "Zero" potentiometer to adjust the display to read exactly 0.0 .

The OMD-11 uses an optoelectronic measuring method based on scattered light. A beam of light is passed through a sample of water flowing through a glass measuring cell. If oil particles are present in the water, they scatter the light. A sensor detects this scattered light, and the intensity of the scattering is directly proportional to the oil concentration, which is then displayed on the unit's 14-segment LED display in parts per million (ppm). A key enhancement in the OMD-11 is its improved solids suppression, which minimizes interference from non-oil particles, leading to fewer false alarms and more reliable monitoring. A practical example is that while an older monitor might display 15 mg/l of Black Iron Oxide as 15 ppm of oil, the OMD-11 would display it as only 2 ppm, highlighting its ability to differentiate between oil and solid particles. This is the "brain

To check the unit, run oil-free water through the system to purge it and ensure the reading drops to zero.

Connect the sample inlet to the vertical section of the OWS overboard discharge line. Ensure the sample stream flows upward through the measuring cell to prevent air bubbles from trapping inside. The unit should be mounted vertically to ensure

Verify that the 3-way valve actuates correctly when the test button is pressed. 7. Troubleshooting Common Faults

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

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.