Deckma manufactures oil-in-water monitors and systems to the marine and industrial markets since the early 1970's.
AMM provides maintenance on all these equipments, periodic calibration, spare parts replacement and repair, and of course the supply of new parts.
OMD-24 Series
The OMD-24 Bilge Alarm Unit has been designed specifically for use in conjunction with15 ppm oil-water separator units and has a specification and performance which exceeds the requirements of the International Maritime Organization specifications for 15ppm Bilge Alarms contained in Resolution MEPC. 107 (49).
The unit is supplied with 2 works-adjusted alarms at 15 ppm. Other set points (10 ppm or 5 ppm) are possible and can be adjusted on site at any time by using the buttons at the front panel. If an alarm set point is exceed, the alarms are visible at the front panel and the appropriate relays are switched.
In case of malfunction the System LED at the front panel will change from blinking green to permanent red. For the data logging function the unit requires an status input from the separator. Optionally a 0(4) - 20 mA (equal to 0 - 30 ppm) signal output is available for driving a recorder or external meter.
| Property | Value |
| Range (measurement & indication) | 0 - 30 ppm, Trend up to 50ppm |
| Range (IMO specification) | 0 - 15 ppm (according IMO regulations) |
| Accuracy | better than IMO MEPC.107(49) |
| Electrical power supply | 24V - 240V, AC or DC, Automatic Voltage Selection |
| Electrical power consumption | < 10 VA |
| Sample | Oily water from separator outlet, 0,1 - 4 l/min |
| Sample temperature range | +1°C to +65°C |
| Sample connections | R 1/4" Female |
| Alarm 1 & 2 Set Points | 1 - 15ppm (independently adjustable) |
| Alarm 1 operating delay for annunciation | 1 - 540 sec |
| Alarm 2 operating delay for control | 1 - 10 sec |
| Alarm contacts | 2 independently adjustable switchover contacts |
| Alarm contact operation mode | De-energized in Alarm State |
| Alarm contact ratings | 3A, 240V each |
| Alarm output | 0 - 20 mA or 4 - 20 mA, for 0-30ppm reversible, ext. Load<150Ω |
| Display | Graphic Display |
| Ambient temperature | +1°C to +55°C |
| Class of protection | IP 65 |
| Dimension | 360 x 240 x 100 mm (WxHxD) |
| Weight | 5,4 kgs |
OMD-32 Series
The OMD-32 Oil-in-Water Monitor has been designed specifically for use inconjunction with oil-water separator units.
The OMD-32 has been constructed using technology of the DECKMA HAMBURG OMD series industrial instruments and 15ppm Bilge Alarm Monitors, that have a specification and performance which exceeds the requirements of the International Maritime Organization specifications for 15ppm Oil-in-Water Monitors contained in Resolution MEPC. 107 (49).The OMD-32 unit is supplied with 2 works-adjusted alarms at 10 ppm. Other set points are possible (e.g. 100ppm) and can be adjusted on site at any time by using the buttons at the front panel.If an alarm set point is exceeded, the alarms are visible at the front panel and the appropriate relays are switched. In case of malfunction the System LED at the front panel will change from blinking green to permanent red, and a system fault relay contact is switched.
A 0(4) - 20 mA signal output is available for driving a recorder or external meter.
| Property | Value |
| Range* | 0 – 200 ppm |
| Resolution* | 1ppm (0.1 ppm below 10ppm) |
| Accuracy | up to +/- 1ppm below 10ppm |
| Response time | < 5s |
| Sample Water Pressure | >max. 10 bar |
| Sample Flow | typ. 2 Liter / min |
| Sample Water Temperature | up to 90° C |
| Power Supply | 24 V – 240V AC or DC |
| Power Consumption | < 10 VA |
| ppm Alarm | 2 adjustable ( independent, entire range ) |
| ppm Alarms delay | 2 adjustable ( independent, from 1 sec. up to 540 sec.) |
| ppm Alarm visual indication | 2 Red LEDs |
| ppm Alarms Contact Rating | 2 Potential free 1 pole change over contacts, 3 A / 240 VAC |
| System Fault Alarm visual indication: | Red LED |
| System Fault Alarm Contact Rating | Potential free 1 pole change over contact, 3 A / 240 VAC |
| Output Signal | 0(4) – 20 mA, ext. Load < 150 W, Output range adjustable |
| Cleaning System* | Automatic, pneumatically operated |
| Cleaning system air pressure* | 2.5 - 6 bar, typ. <0.1 Liter / hour |
| Ambient Temperature | + 1 to + 55° C |
OMD-2008 Series
5 ppm + 15 ppm Bilge Alarm according to IMO Resolution MEPC.107(49)
| Property | Value |
| Range (measurement & indication) | 0 - 30 ppm, Trend up to 50ppm |
| Range (IMO specification) | 0 - 15 ppm (according IMO regulations) |
| Accuracy | better than IMO MEPC.107(49) |
| Electrical power supply | 24V - 240V, AC or DC, Automatic Voltage Selection |
| Electrical power consumption | < 10 VA |
| Sample | Oily water from separator outlet, 0,1 - 4 l/min |
| Sample temperature range | +1°C to +65°C |
| Sample connections | R 1/4" Female |
| Alarm 1 & 2 Set Points | 1 - 15ppm (independently adjustable) |
| Alarm 1 operating delay for annunciation | 1 - 540 sec |
| Alarm 2 operating delay for control | 1 - 10 sec |
| Alarm contacts | 2 independently adjustable switchover contacts |
| Alarm contact operation mode | De-energized in Alarm State |
| Alarm contact ratings | 3A, 240V each |
| Alarm output | 0 - 20 mA or 4 - 20 mA, for 0-30ppm reversible, ext. Load<150Ω |
| Display | Graphic Display |
| Ambient temperature | +1°C to +55°C |
| Class of protection | IP 65 |
| Dimension | 360 x 240 x 100 mm (WxHxD) |
| Weight | 5,4 kgs |
OMD-2008 EV FC MCU with Flow Control
The OMD-2008 EV FC MCU is equipped with a Flow Sensor. The Flow Sensor ispositioned in the Drain line of the Measuring Cell.
If the flow rate through the Measuring Cell is too low, or if the sample is not flowingat all, the Instrument will go to Alarm condition and issue a “Status: Flow?”message. According to MEPC.107(49) the 15ppm Bilge Alarm has to be providedwith a representative sample, i.e. the operator of the instrument is responsible tomaintain a proper sample flow through the instrument. The recommended sampleflow rate for Deckma instruments is approx. 2 Liters per Minute. At this flow rate,with a common setup of separator and 15ppm Bilge Alarm, it is easily possible toreliably operate the instrument, and to ensure the required short reaction time tochanges in the oil content of the effluent water. The instrument does not know aboutthe sample stream flow rate. If circumstances lead to interruptions of the sampleflow, or if the sample flow is stopped completely, the portion of the sample that is inthe sample glass tube will be measured continuously. The instrument will display thesame measurement result for a long time, but it may fail to adequately react tochanges in the overboard discharge water oil content.
For many years the OMD series instruments have had a dedicated input to connecta flow switch to monitor the sample flow rate. However, not many installation havebeen made with an additional flow switch. A more easy solution had to be found, asolution that does not require additional pipework, or electrical work, on site. Thenew OMD-2008 EV FC MCU version of the OMD-2008 instrument come with a flowsensor that measures the sample flow rate, and automatically sets the instrumentinto alarm condition, if a sufficient flow rate is not maintained. Constructed to makeaccidental flow interruptions, incorrectly closed valves, and a missing sample streamharmless events that do not lead to unlawful discharge, the OMD-2008 EV FC MCUalso makes manipulation and tinkering with the instrument setup much lessrewarding. Additionally for the OMD-2008 EV FC MCU instruments a ManualCleaning Unit (MCU) is available. This system allows to quickly clean the sampleglass tube without having to open the Measuring Cell. With the MCU maintenanceof the system becomes very easy, ensuring high reliability and reducedmaintenance workload.
| Property | Value |
| Range: | 0 – 30 ppm, Trend indication 50ppm |
| Accuracy | According IMO MEPC. 107(49) |
| Linearity: | Up to 30 ppm better than ± 2 % |
| Display: | Yellow Graphic Display |
| Power Supply: | 24 V - 240V AC or DC, Automatic Voltage selection |
| Alarm Points 1+2: | Adjustable between 1 - 15 ppm (Works adjustment 15 ppm) |
| Alarm 1 Operating Delay: (for annunciation purpose) | Adjustable between 1 – 540 sec. (Works adjustment 2 sec) |
| Alarm 2 Operating Delay: (for control purposes) | Adjustable between 1 – 10 sec. (Works adjustment 10 sec) |
| System Fault Alarm: | Red LED |
| Alarm Contact Rating: | Potential free 1 pole change over contacts, 3 A / 240 V |
| Alarm Indication: | Red LEDs |
| Output Signal: | 0 – 20 mA or 4 – 20 selectable active current loop, ext. Load < 150 Ohm |
| Clean Water Pressure: | 0-6 bar |
| Sample Water Pressure: | 0,1 - 6 bar |
| Sample Flow: | Approx. 0,6 - 3 l/min depend. to pressure |
| Ambient Temperature: | + 1 to + 55° C |
| Sample Water Temperature: | + 1 to + 65° C |
| Size (Computer Unit): | 200 mm W x 200 mm H x 100 mm D |
| Size (EV-FC-MCU Arrangement): | 150 mm W x 290 mm H x 140 mm D |
| Degree of Protection: | IP 65 |
| Weight: | 5,9 kg |
