Daihatsu MD-9M

Daihatsu MD-9M Oil Mist Detectors.

📖 What They Do:

These devices are safety-critical systems installed on large marine diesel engines to detect the presence of oil mist inside crankcases. Oil mist can form due to overheating parts (like bearings or piston undersides) and poses a severe explosion risk if it ignites.

📌 Key Features Seen Here:

• Oil Mist Density Indicator (with LED status lights)

• Rotary Valve Indicator — showing the monitoring channel/crankcase number being scanned

• Multiple connection ports for sensors and data/signaling interfaces

• Branded DAIHATSU — commonly used on Daihatsu marine auxiliary engines

⚙️ Typical Application:

• Installed on each engine’s crankcase, continuously sampling and monitoring the air for fine oil mist

• Integrated with engine alarm systems for automatic engine shutdown or alarm triggering if mist density exceeds safe limits