Water in Oil

Developed and manufactured by PAJ based on specifications from MAN Diesel & Turbo Copenhagen, the WIO200 sensor measures water content and water activity in the lubrication oil of marine engines and other critical applications. It maintains constant high-level oil quality on large 2-stroke engines by ensuring water activity stays within specified limits.

PAJ Standard Water in Oil Sensor
Online Measuring
24-7 Online In-Situ Measuring
Total Volume
Early Alarms & Protection

Water in Oil Sensor at a Glance

Hover over or focus on the cards below to explore technical features, monitoring drawbacks resolved, and system certifications.

PAJ Ball Valve Sensor Assembly
Traditional Drawbacks
Overcoming Traditional Lab Drawbacks
No Lab Waiting
  • Sample Representation: Lab samples only test a tiny volume, whereas WIO200 checks the entire oil volume.
  • Time Delay: Eliminates waiting days or weeks for laboratory results.
  • Crew Independent: Removes risks of crew-dependent onboard testing errors.
Sensor Features
WIO200 System Integration
Direct Connection
  • Connects directly to the ship's existing monitoring system.
  • Direct connection to Engine Room Control System via potential free 4-20mA.
  • Equipped with two independent potential-free relay contacts for High and HighHigh alarms.
Approvals and Standards
Certifications & Approvals
MAN / GL Approved
  • Germanischer Lloyd Type Approved.
  • MAN Diesel & Turbo Approved.
  • CE marked and produced according to ISO 9001 and ISO 14001 standards.
Design Specs
Robust Industrial Design
IP65 Housing
  • Robust IP65 design built for harsh marine engine room environments.
  • Calibrated specifically for actual lubrication or hydraulic oil.
  • Continuous in-situ online tracking of relative humidity and water activity.
Preventing Damage
Damage Prevention & Safety
Early Warning
  • Prevents corrosion, pressure-bearing reduction, emulsification, and additive leaching.
  • Detects leaks from coolers and coolant systems early.
  • Allows crew to intervene before expensive machinery accidents occur.
Environmental Protection
Equipment & Environmental Care
Eco-Friendly
  • Protects vital oil stocks and expensive marine machinery equipment.
  • Reduces environmental footprint by preventing oil degradation problems.
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