OIL MIST DETECTOR VISATRON SCHALLER VN115 / 87EMC

Oil mist detectors of the VISATRON series protect large diesel engines of all operation classes against serious damages originating from crankdrive bearing or piston component overheating.
Operating voltage: 24 V DC +/- 25%, with reverse battery protection
Power consumption: Maximum 3 A
Driving air for air jet pump: 0.3 to 0.5 bar
Protection: IP 44
Admissible operating temperature range: 0°C to +70° C

Oil Mist Detector System – VISATRON VN115 / 87EMC

This is an advanced oil mist detector system, specifically the VISATRON VN115 / 87EMC manufactured by Schaller Automation. It is a high-end crankcase safety monitoring system designed for large marine diesel engines, offering continuous and fully automated protection against dangerous operating conditions.

What it is

The VISATRON system is a modern oil mist detection solution used in marine and industrial engines to monitor crankcase conditions in real time. It is part of a new generation of intelligent safety systems that combine precision measurement, automation, and diagnostic capabilities to ensure maximum engine safety and reliability.

Purpose

Like all oil mist detectors, its primary role is to:
• Detect oil mist buildup inside engine crankcases
• Prevent crankcase explosions
• Provide early warning of overheating, bearing damage, or lubrication failure

By identifying abnormal conditions early, the system helps avoid catastrophic failures and costly downtime.

What makes this one different

This VISATRON model stands out due to its advanced features and automation capabilities:

✔️ Continuous automatic monitoring
• Monitors multiple cylinders or crankcase sections simultaneously
• Eliminates the need for manual selection or scanning

✔️ Centralized system architecture
• A single unit can manage multiple sampling points
• Typically connected to a sampling manifold for efficient air distribution

✔️ Smart diagnostics and safety features
• Built-in self-check and system diagnostics
• Fault detection and error reporting
• Alarm logging and event tracking (in newer configurations)

These features make it ideal for modern vessels with integrated automation systems.

How it works

• The system continuously draws air samples from different crankcase compartments
  • It uses optical detection (light scattering technology) to measure oil mist concentration
  • The system compares readings in real time across all channels
  • An alarm is triggered if:
  o Oil mist concentration exceeds safe limits
  o A rapid increase in oil mist is detected (critical for early fault detection)

This continuous monitoring ensures fast response to developing issues.

What you see in the image

• Main control and sensor unit
  • Integrated sampling system (typically located in the lower section)
  • Electrical connection points for system integration
  • Robust industrial housing, often designed for hazardous or explosion-prone environments

Where it’s used

• Large marine diesel engines (main and auxiliary engines)
  • Commercial vessels and tankers
  • Power generation systems
  • Industrial engine installations

Simple explanation

In simple terms, the VISATRON oil mist detector is a smart engine safety system. It continuously monitors for dangerous oil vapor inside the engine and reacts instantly, providing early warnings without requiring manual intervention, making it far more advanced than older, manual oil mist detection systems.