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ℹ️ Additional Information
| Condition |
USED/EXCELLENT CONDITION (COSMETICS) |
|---|---|
| Manufacturer |
DAIHATSU |
| Product Code |
300.999.02810 |
📦 Guarantee Terms
🗂️ Product Files
🖹 Description
Oil Mist Detector – Daihatsu MD9
This is an oil mist detector, specifically the MD9 model manufactured by Daihatsu Diesel. It is a marine safety monitoring device designed for installation on large diesel engines, where it continuously checks for the presence of oil mist inside the crankcase to prevent hazardous conditions.
What it is
The Daihatsu MD9 is a crankcase oil mist detection system used primarily in marine engines and heavy industrial diesel applications. Its main function is to provide early warning of abnormal operating conditions by detecting suspended oil particles in the crankcase atmosphere.
Although it is an older-generation system compared to modern digital detectors, it remains reliable and effective for basic safety monitoring.
Why it matters
Oil mist accumulation inside an engine crankcase is a serious hazard and can lead to:
• Crankcase explosions
• Severe engine damage
• Increased fire risk
The MD9 oil mist detector plays a critical role in preventing such incidents by alerting operators before ignition conditions are reached.
What it does
- Draws air samples from multiple points within the engine
• Measures oil vapor concentration in real time
• Triggers an alarm when oil mist levels exceed safe thresholds
This allows crew members or operators to take immediate corrective action.
How it works
- The system uses optical detection principles such as light scattering or opacity measurement
• As oil mist concentration increases, light transmission changes
• The detector interprets these changes and generates an alarm signal when necessary
What’s different about this one
Compared to more modern systems like the Graviner Mark 5:
• It features an older, more analog-style design
• Includes physical controls and indicators such as:
o A rotary selector switch for checking different sampling points
o An analog display scale for monitoring levels
o Individual alarm indicators for each channel
This design indicates a manual scanning system, where the operator may need to select and monitor specific sampling points.
Comparison with newer detectors
| Feature | Graviner Mark 5 | Daihatsu MD9 |
| Type | More modern | Older / analog |
| Interface | Digital display | Analog + selector switch |
| Operation | Automatic monitoring | Manual channel selection |
Where it’s used
- Marine diesel engines (main and auxiliary engines)
• Industrial power generation systems
• Older vessels or installations with legacy equipment
Simple explanation
In simple terms, the Daihatsu MD9 has the same purpose as newer oil mist detectors: it acts as a critical engine safety system that warns of dangerous oil vapor buildup inside the crankcase. However, this version relies on more manual operation and analog controls, making it a classic but still effective solution for engine protection.
