INTRODUCTION

The VISATRON VN215/93 Oil Mist Detector (OMD) is one of the most widely recognized marine engine safety systems used onboard commercial vessels and power generation installations. Manufactured by Schaller Automation, the VN215/93 is specifically designed to monitor crankcase oil mist concentrations and provide early warning of dangerous conditions that could lead to crankcase explosions and severe engine damage.

The primary purpose of the VISATRON VN215/93 is to continuously sample air from individual crankcase compartments and detect abnormal oil mist generation caused by overheating bearings, piston failures, lubrication issues, mechanical friction, or other developing engine faults. When excessive oil mist is detected, the system activates alarms and protective actions, allowing engineers to investigate the problem before catastrophic damage occurs.

For ship operators, this equipment plays a critical role in engine room safety, crew protection, machinery reliability, and regulatory compliance. The VN215/93 is widely installed on slow-speed and medium-speed marine diesel engines operating on container ships, bulk carriers, tankers, LNG carriers, LPG carriers, offshore vessels, and other commercial vessels worldwide.

SM MARINE SERVICE™ supplies New, Used, and Reconditioned VISATRON VN215/93 units along with spare parts, repair services, troubleshooting support, calibration, and worldwide delivery solutions.

PRODUCT OVERVIEW

The VISATRON VN215/93 belongs to the VISATRON VN93 series of Oil Mist Detectors developed by Schaller Automation. Unlike simpler oil mist monitoring systems, the VN215/93 uses an individual compartment suction pipe arrangement that enables identification of the specific crankcase compartment with the highest oil mist concentration. This significantly reduces troubleshooting time during alarm conditions.

The system continuously extracts crankcase atmosphere through a wear-free suction system and analyzes the opacity of the sampled air using an optical measuring track. By monitoring oil mist concentration in real time, the detector can identify abnormal conditions long before an explosion hazard develops.

The VISATRON VN215/93 is particularly suitable for large crosshead marine diesel engines where oil mist may spread slowly from the damaged compartment. The detector's high sensitivity allows accurate localization of potential failures, helping engineers take corrective action before major machinery damage occurs.

The complete system generally consists of:

• Measuring Head
• Valve Box 215
• Base Plate Assembly
• Air Jet Pump
• Pressure Regulator
• Sampling Pipe System
• Electrical Interface Connections
• Alarm Output Circuits
• Monitoring and Display Units

KEY FEATURES

Individual Crankcase Compartment Identification

One of the most important features of the VN215/93 is its ability to identify the specific compartment with the highest oil mist concentration. This enables rapid fault localization and significantly reduces engine troubleshooting time.

High Sensitivity Monitoring

The VN215/93 offers the highest sensitivity within the VN93 product family. It is specifically engineered for medium-speed and slow-speed crosshead engines where early detection of oil mist is critical.

Continuous Sampling Technology

Unlike passive monitoring systems, the VISATRON VN215/93 continuously extracts crankcase atmosphere using a suction system. This active monitoring method improves response times and enhances safety performance.

Optical Oil Mist Measurement

The system measures oil mist concentration using an optical opacity measurement principle. This proven technology provides reliable detection of dangerous oil mist accumulation inside engine crankcases.

Integrated Alarm Outputs

The detector provides Oil Mist Alarm outputs, Pre-Alarm outputs, and Ready signals, allowing direct integration with engine safety systems and ship automation platforms.

Reduced False Alarm Design

Special suction funnels, drainage arrangements, and integrated heating elements help prevent false alarms caused by splash oil, water condensation, and vessel motion.

TECHNICAL SPECIFICATIONS

Technical specifications may vary depending on configuration and vessel installation requirements.

APPLICATIONS

The VISATRON VN215/93 Oil Mist Detector is used across a wide range of commercial and industrial marine applications.

Container Ships

Provides continuous crankcase monitoring for large low-speed propulsion engines operating on international container routes.

Bulk Carriers

Protects main engines during long-distance bulk cargo transportation and heavy operational cycles.

Oil Tankers and Chemical Tankers

Ensures safe engine operation where machinery reliability and safety compliance are essential.

LNG and LPG Carriers

Supports high safety standards by monitoring engine conditions and reducing the risk of machinery incidents.

Offshore Vessels

Used on offshore support vessels, drilling units, and specialized marine platforms requiring continuous engine protection.

Passenger Ships

Enhances machinery safety and operational reliability for passenger transportation services.

Research Vessels

Protects critical propulsion systems used in scientific and oceanographic operations.

Fishing Vessels

Provides early warning of developing engine problems and helps reduce unplanned downtime.

In modern engine rooms, the VN215/93 often operates alongside Engine Monitoring Systems, Radar, ECDIS, AIS, Gyro Compass, Autopilot, VDR, BNWAS, GPS, Satellite Compass, Navtex, Inmarsat, GMDSS equipment, Boiler Control Systems, and Fire Alarm Systems as part of an integrated marine automation environment.

SPARE PARTS SUPPORT

SM MARINE SERVICE™ supplies a complete range of VISATRON VN215/93 spare parts including:

• Measuring Head Assemblies
• Valve Box Assemblies
• Air Jet Pumps
• Pressure Regulators
• Fresh Air Filters
• Inspection Cover Gaskets
• Measuring Head Gaskets
• Flexible Bellows
• Connection Sockets
• Power Supply Components
• Relay Modules
• Electronic Boards
• Cable Assemblies
• Sampling Tubes
• Service Kits
• Cleaning Kits

Original, OEM-equivalent, refurbished, and exchange units are available depending on customer requirements and budget.

REPAIR AND TECHNICAL SERVICES

SM MARINE SERVICE™ provides professional support for:

• VISATRON VN215/93 Repair
• Oil Mist Detector Troubleshooting
• Alarm Investigation
• Measuring Head Repair
• Valve Box Repair
• Sensor Testing
• System Calibration
• Performance Verification
• Preventive Maintenance
• Annual Inspection
• Board-Level Electronic Repair
• Functional Testing
• Exchange Unit Supply
• Onboard Technical Support
• Worldwide Spare Parts Sourcing

Our technical team supports both routine maintenance and emergency troubleshooting for marine automation and engine monitoring equipment.

USER MANUAL AND TECHNICAL DOCUMENTATION

Official VISATRON VN93 Series Operation Manual:

VISATRON VN93 Operation Manual PDF

Additional Spare Parts Information:

VISATRON Spare Parts Catalogue

WHY CHOOSE SM MARINE SERVICE™

SM MARINE SERVICE™

Bangladesh Office
Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh

China Warehouse and Support Center
Shanghai, China

SM MARINE SERVICE™ supplies both New Equipment and Reconditioned Equipment depending on customer requirements and budget.

We provide worldwide supply, sourcing, repair, calibration, technical support and spare parts services for marine automation, navigation, communication and marine electronic systems.

Website : www.smmarineservice.com

Email : info@smmarineservice.com

WhatsApp and Viber : +8801818929292

Marketing Contact: Nazmul Hasan Bhuiyan

Mobile WhatsApp and Viber : +8801730296909

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