General Details
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.

Technical Details
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, AC or DC, +/-10%
Electrical power consumption < 5 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 (adjustable) works adjustment 15ppm
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 Computer Unit 185 x 210 x 65 mm (WxHxD)
Dimension Measuring Cell 140 x 160 x 65 mm (WxHxD)
Weight 2,5 kgs
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