The G2000 Ambient Oil Mist Detector is used to detect oil mist in pump rooms, engine rooms, and other facilities. Oil mist is highly ignitable and poses a potential fire hazard. As the International Maritime Organization points out, most engine-room fires are the result of the formation of oil mist. OCIMF’s “Ship Inspection Report (SIRE) Programme” also draws particular attention to the oil mist hazard from hydraulic aggregate pumps and transmission pipes under high pressure.
As a result, early alarms on the formation of oil mist are important. This small safety investment also yields great benefits while more and more vetting inspectors would like to see this equipment onboard. The G2000 is ideal for applications where an accurate response to oil mist is required in unattended machinery spaces.
Atmospheric oil mist can be formed in one of two ways. First, oil leaks in pressurized oil lines produce a very fine atomized spray. Second, evaporating oil on a hot surface produces what is known as blue smoke. These tiny droplets of oil in the air have a particularly low ignition temperature or can be sparked off by other sources.
For Hydraulic Installations and Fuel Lines
The G2000 Ambient Oil Mist Detector is a line-of-sight opacity meter. It sends a high-power infrared beam across the monitored section (from lens to lens). If the beam is interrupted by oil mist, it is scattered and absorbed whichreduces the amount of light sent to the transceiver. The monitoring unit displays the opacity of the air in the monitored section. The alarms will be activated if the opacity exceeds the preset limits.
The line-of-sight measurement principle has the decisive advantage of covering a larger area than single-point extractive-sampling systems. Using the G2000, you avoid the risk of having placed a sensor in an area where oil mist does not occur. The system has a scanning distance from 3 to 9 meters.
The G2000 reacts to oil mist as well as smoke, dust and other obstructions which will possibly trigger an alarm. Although the purpose of the system is to detect oil mist, the reaction to other obstructions can be considered an indication of other malfunctions. The system has two alarms that can be adjusted to specific requirements. The alarms are preset at 5 and 10 %. The lower alarm level is used as a lens-cleaning warning.
Monitoring Unit :
|Power supply||standard 210–250 V AC – 50/60 Hz – 20 VA max. — optional 105–130 V AC or 20–30 V DC|
|Ambient temperature||0ºC – 55ºC|
|Output signal (linearized)||4…20 mA (4 mA ≈ 100% – 20 mA ≈ 0% Opacity) max. 800 Ω or 0…10 V DC (0 V ≈ 100% – 10 V ≈ 0% Opacity) max. 10 mA|
|Dimensions / Weight||H×W×D: 300 × 200 × 150 mm / 5.5 kg (monitoring unit alone)|
|Enclosure||IP 65 Steel box|
Digital Display (& Optional Remote Digital Display) :
|Display||0…100% opacity level (programmable)|
|Alarm delay||default 5 s (programmable 0–99 s)|
|Relay function||2 relays, volt free, freely configurable – lens cleaning alarm and oil mist alarm – max. 250 V AC, max. 2A (NO/NC)|
|Power supply||22…250 V AC – 50/60 Hz or 20…300 V DC – 4 VA (only relevant if remote)|
|Dimensions||H×W×D: 48 × 96 × 120 mm – for panel cut-out 44.5 × 91.5 mm|
Fiber-Optic Heads and Cables :
|Operating temperature||0ºC – 65ºC|
|Head dimensions||H×W×D: < 120 × 100 × 60 mm|
|Socket||Grade A steel – welded to structure|
|Scanning distance||3 to 9 m — optional 1 to 3 m|
|Optic fibers||glass-fiber core in stainless steel jacket – Length: 4.5 m – optional 6.0 m, 7.5 m or others|
Alarm Annunciator – Remote Display Data-system integration via various busses such as RS485 and CAN.
Visualization and data logging.
Specifications subject to changes without notice.