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Oil Quality Sensor Module
Overview
Monitors lubricant condition via turbidity, viscosity, water content, temperature, and dielectric constant for predictive maintenance. The module provides continuous in-line analysis of oil health, replacing periodic lab sampling with real-time data that enables condition-based oil change intervals. Early detection of contamination or degradation helps prevent costly equipment damage from poor lubrication.
Features
- Turbidity and particle contamination -- Optical turbidity measurement detects suspended particles, metal wear debris, and soot buildup that indicate component wear or external contamination.
- Viscosity and temperature compensation -- Inline viscosity measurement with automatic temperature compensation ensures accurate readings regardless of operating temperature variations.
- Water content detection -- Capacitive sensing detects dissolved and free water contamination that can reduce lubricant film strength and accelerate corrosion.
Key Specifications
| Parameter | Value |
|---|---|
| Viscosity range | 1 - 1000 cSt |
| Viscosity accuracy | +/-3% of reading |
| Water detection | 0 - 100% saturation |
| Temperature range | -20 to +120 C |
| Turbidity | ISO 4406 cleanliness classes |
| Dielectric constant | 1.0 - 5.0 |
| Interface | RS-485 (Modbus RTU) |
| Supply voltage | 5 V (from Edge backplane) |
Applications
- Gearbox and hydraulic oil monitoring -- Continuously track oil condition in gearboxes, hydraulic power units, and lubrication systems to transition from time-based to condition-based oil changes.
- Contamination and degradation trending -- Log long-term trends in particle count, water content, and viscosity to identify gradual degradation patterns and correlate them with equipment duty cycles.
- Bearing and pump lubrication assurance -- Verify that lubricant quality remains within acceptable limits for critical bearings, pumps, and compressors where oil breakdown leads to rapid wear.
Edge Integration
Provides oil health parameters, trend data, and alarm states to the Edge over RS-485 using Modbus RTU. Alert thresholds for each measured parameter are individually configurable through the Edge web UI. The module supports auto-discovery and registers its measurement capabilities on the sensor bus automatically.