Graviner-Mk5

A Graviner Mk5 Oil Mist Detector, another crucial safety device used on large marine and stationary diesel engines.

📖 Overview:

The Graviner Mk5 is a well-established system for continuously monitoring crankcase atmospheres for oil mist, much like the Daihatsu MD-9M you showed earlier. Its role is to detect early signs of overheating or mechanical failure that could produce oil mist — a dangerous precursor to crankcase explosions.

📌 Key Features Visible Here:

• Digital display with LED bar graph indicating mist density across multiple crankcase zones

• Indicator LEDs for Normal, Warning, and Alarm conditions

• Control push buttons for operations like test/reset

• Multi-channel sampling ports underneath for connecting pipes from crankcase sampling points

• Wired power and signal connectors

⚙️ Application:

• Installed on marine diesel engines, gas engines, or other large reciprocating machinery.

• Continuously samples air from crankcases through sampling heads.

• Triggers local and remote alarms (and possibly engine shutdown) if mist density crosses preset thresholds.