Protect Your Rotating Machinery with Continuous Lube Oil Water Monitoring
Detect water ingress in lubrication systems before it causes bearing damage — continuously, inline, without sampling.
The Challenge
Water is the most destructive contaminant in lubrication oil. Even trace amounts above 0.05% cause micro-pitting, hydrogen embrittlement, and accelerated bearing wear. Conventional monitoring methods have critical blind spots that leave expensive machinery unprotected.
Bearing Failure
Water in lube oil causes micro-pitting and corrosion on bearing surfaces. A single water ingress event can reduce bearing life by 80% or more.
Saturation Point Blind Spot
Conventional moisture sensors (water activity / relative humidity type) only measure dissolved water. Once oil reaches saturation, free and emulsified water goes undetected — precisely when damage is worst.
Scheduled Sampling Gaps
Monthly or quarterly oil samples miss transient contamination events. A cooling water leak or seal failure can flood the system between sample intervals.
Unplanned Downtime Cost
Turbine, compressor, and gearbox failures from undetected water contamination cost far more in lost production than the monitoring instrument.
How Zelentech Solves It
The ZT-100 Water In Oil Monitor measures total water content — dissolved, free, and emulsified — well beyond the saturation point. This is the critical difference: while Vaisala, E+H, and similar sensors measure only water activity (relative saturation), the ZT-100 provides a true volumetric water measurement that catches the dangerous free water that those sensors miss.
With 0.01% sensitivity and a 1-second response time, the ZT-100 detects water ingress the moment it occurs — from cooler tube leaks, seal failures, or condensation — giving operators time to react before bearing damage occurs.
The monitor is 24 VDC loop-powered with a standard 4–20mA output, making installation as simple as wiring a pressure transmitter. Select the oil type in the configuration software for automatic temperature compensation matched to your lubricant.
Total Water Measurement
Dissolved + free + emulsified water. No blind spot at saturation — measures what matters when damage is imminent.
0.01% Sensitivity
Catches trace-level contamination before it reaches levels that cause micro-pitting and bearing failure.
1-Second Response
Real-time detection of water ingress events, enabling immediate shutdown or divert before damage occurs.
Key Specifications
| Measurement | Total water content (dissolved + free + emulsified) |
| Sensitivity | From 0.01% water content |
| Response Time | 1 second |
| Power | 24 VDC, loop powered (0.66 W max) |
| Output | 4–20mA + HART |
| Oil Types | Turbine oil, gear oil, compressor oil, engine oil, hydraulic oil |
| Temp Compensation | Automatic, oil-type selectable |
Recommended Products
Protect Your Critical Machinery
Tell us about your lubrication system — oil type, operating temperature, and installation point — and we’ll recommend the right ZT-100 configuration.
