Graviner MK6 Oil Mist Detector Head
Graviner (Johnson Controls / Kidde Fire Protection)
Refurbished
Graviner (Johnson Controls / Kidde Fire Protection)
United Kingdom
Oil Mist Detector Head Complete (Sensor Assembly)
Main Engine & Auxiliary Engine Crankcase Oil Mist Detection System
The Graviner MK6 Detector Head Complete is a critical sensing unit used in the Graviner MK6 Oil Mist Detection (OMD) System, one of the most widely installed crankcase safety systems on commercial marine diesel engines.
Its primary function is to continuously monitor crankcase air for oil mist concentration. An increase in oil mist is often an early warning of bearing overheating or other mechanical failures that could lead to a crankcase explosion. The detector head provides rapid and reliable detection, allowing engineers to take immediate corrective action before serious damage occurs.
The Graviner MK6 system complies with the oil mist detection requirements of major marine classification societies and is trusted on thousands of merchant vessels worldwide.
The Detector Head Complete is the field-mounted sensing assembly of the Graviner MK6 Oil Mist Detection System.
It continuously samples air from the crankcase through dedicated sampling pipes and analyzes the presence of suspended oil particles. If the measured oil mist concentration exceeds the preset alarm threshold, the detector transmits an alarm to the MK6 Control Unit, enabling the crew to investigate and prevent engine damage.
This equipment is essential for safeguarding:
A complete Graviner MK6 Detector Head typically includes:
The Graviner MK6 Detector Head is commonly installed on:
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
| False oil mist alarm | Dirty optical chamber | Clean detector head following manufacturer procedures |
| Detector fault | Internal electronics failure | Replace detector head |
| No communication | Cable or connector fault | Inspect wiring and connectors |
| Slow response | Sampling pipe blockage | Clean sampling lines |
| Frequent alarms | Excessive engine wear or bearing overheating | Inspect engine immediately |
| Sensor contamination | Oil deposits inside chamber | Perform scheduled cleaning and recalibration |
To ensure reliable operation:
The Graviner MK6 remains one of the most trusted oil mist detection systems because it offers:
These advantages help prevent catastrophic crankcase explosions, reduce engine downtime, and improve vessel safety.
It continuously detects oil mist inside the engine crankcase and sends signals to the MK6 control unit for early warning of abnormal conditions.
Oil mist can indicate overheating bearings or other mechanical faults. Early detection helps prevent crankcase explosions and severe engine damage.
Yes. The detector head is designed as a replaceable assembly and can be changed without replacing the complete oil mist detection system.
The system is widely used on main propulsion engines, auxiliary engines, and marine diesel generator engines across commercial vessels.
The Graviner MK6 Detector Head Complete is a high-performance sensing assembly for the Graviner MK6 Oil Mist Detection System. Designed for continuous crankcase monitoring, it provides early detection of oil mist concentration to protect marine diesel engines from overheating, bearing failures, and crankcase explosions. It is a trusted solution used on commercial ships worldwide.
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