OMD- 24 Series


The OMD-24 Bilge Alarm Unit has been designed specifically for use in conjunction with 15 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.

Range (measurement & indication)0 - 30 ppm, Trend up to 50ppm
Range (IMO specification)0 - 15 ppm (according IMO regulations)
Accuracybetter than IMO MEPC.107(49)
Electrical power supply24V, AC or DC, +/-10%
Electrical power consumption< 5 VA
SampleOily water from separator outlet, 0,1 - 4 l/min
Sample temperature range+1°C  to +65°C
Sample connectionsR 1/4" Female
Alarm 1 & 2 Set Points1 - 15ppm (adjustable) works adjustment 15ppm
Alarm 1 operating delay for annunciation1 - 540 sec
Alarm 2 operating delay for control 1 - 10 sec
Alarm contacts2 independently adjustable switchover contacts
Alarm contact operation modeDe-energized in Alarm State
Alarm contact ratings3A, 240V each
Alarm output0 - 20 mA or 4 - 20 mA, for 0-30ppm reversible, ext. Load<150Ω
DisplayGraphic Display
Ambient temperature+1°C to +55°C
Class of protectionIP 65
Dimension Computer Unit185 x 210 x 65 mm (WxHxD)
Dimension Measuring Cell140 x 160 x 65 mm (WxHxD)
Weight2,5 kgs