"> Graviner Mark 5 8ch
OceanSphere
Engines
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Graviner

Mark 5 8ch

Graviner Mark 5 8ch is identified in the source list as a oil-mist detector. It is installed on or near a large diesel engine with sampling connections from crankcase compartments to a detector or scanner unit. Its purpose is to detect an abnormal increase in crankcase oil mist that may precede a hot-bearing event or crankcase explosion hazard. The existing database record provides no additional model-specific operating figure beyond the listed designation and category. The exact sampling method, optical sensing arrangement, alarm logic and engine-shutdown interface depend on the installed detector model. The exact model designation identifies sampling capacity, detector architecture and engine interfaces; these details must be confirmed from manufacturer and engine documentation.

Components & Design

Component data being added…

Technical Data

detection method scattered light
alarm threshold mg l 2.0
channels 8
engine cylinders max 8

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Common failures & inspection points

●Sampling-line blockage caused by oil deposits or contamination, resulting in weak flow, channel faults or delayed detection
●Optical-cell contamination caused by oil film or dirt, resulting in false alarms, poor sensitivity or cleaning warnings
●Fan, pump or suction failure caused by mechanical or electrical faults, resulting in loss of sample flow
●Sensor or electronics fault caused by aging, moisture or power problems, resulting in channel alarms or unstable readings
●Incorrect zeroing or calibration caused by poor maintenance procedure, resulting in nuisance alarms or reduced detection sensitivity

Service & Maintenance

Inspect and clean sampling lines, detector chambers, filters and optical components according to the approved procedure. Verify sample-flow indications for all engine compartments and investigate recurring channel faults. Function-test alarms and any engine interface without bypassing protective functions beyond the authorized test method. Check power supplies, drains and heater or fan arrangements where fitted. Record cleaning, calibration and sensor replacement work because trend changes can indicate developing contamination. Refer to manufacturer and engine documentation for exact alarm settings, calibration methods and test intervals.

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Replacement Parts

Keep filters, seals, sampling-line fittings, lamps or optical components where applicable, fan or pump service parts and manufacturer-recommended electronic modules. Use only components compatible with the approved engine protection system. Maintain cleaning tools and consumables specified by the manufacturer.
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Equipment Model #70740 · ✓ still in production