ZT-100 Water In Fuel Emulsions
Measurement and control of water-in-fuel emulsions for marine engines
Water In Fuel Emulsion Control
The ZT-100 WIFE line of meters are designed to measure and control Water In Fuel Emulsions (WIFE).
Our units have successfully passed trial stages for large Marine Engine manufacturers and recently been deployed in new-built ships. Container ship SafMarine Chambal (MAERSK Owned) being the worlds first new-build fitted with Water In Fuel Injection already from the ship-yard in Korea. The ZT-100 WIFE being an integral part in the system.

Technical Specifications
Measurement Performance
| Measurement Range | 0–100% |
| Resolution | 0.05% |
| Accuracy | 0.05% |
| Repeatability | 0.01% Absolute |
| Sensitivity | 0.01% |
Mechanical
| Nominal Sizes | 1″ to 12″ |
| Pressure Rating | 150#, 300#, 600# |
| Process Temperature | +120°C (High Temp Option available) |
| Wetted Material (Sensor) | SS316L (Optional Duplex, Inconel or other steels) |
| Wetted Material (Spool) | SS316L (other material available) |
| Seals & Insulators | PEEK |
| Process Connection | ANSI, DIN, JIS |
Electronics
| Principle of Operation | High Frequency Digital Capacitance |
| Output Signal | 4–20mA |
| Digital Communication | Modbus RTU (RS-485) |
| Power Supply | 24VDC (4-wire) |
| Power Consumption | 2W Max |
| Measurement Rate | 1000 per second |
| Ambient Temperature | –20°C to +60°C |
| Ingress Protection | IP66 |
WIFE Configurations
Adaptable Connections
The Water In Fuel Monitor can be adapted to different configurations. The ZT-100 can be fitted with a variety of connections to suit ships constructed anywhere in the world.
Extended Neck Option
It is common to use the ZT-100 WIFE on very hot pipes so we provide an option with extended necks keeping the electronics away from the heat.
Emission Reduction
Water-in-fuel emulsion technology reduces NOx emissions and improves combustion efficiency — but only when the emulsion ratio is precisely maintained.
Proven Track Record
Successfully deployed on new-build container ships and passed trial stages for major marine engine manufacturers worldwide.
Vessels and Installations
Applications
Marine Engine WIFE Systems
Measurement and control of water-in-fuel emulsion ratios for large marine diesel engines. Ensures optimal emulsion for NOx reduction and combustion efficiency.
New-Build Ships
Integrated into water-in-fuel injection systems during ship construction at yards worldwide.
Heavy Fuel Oil (HFO)
Water content monitoring in heavy fuel oil systems where temperature and viscosity create challenging measurement conditions.
Retrofit Installations
Adding water-in-fuel emulsion control to existing vessel engine systems for emission reduction compliance.
Configure Your WIFE Monitor
Contact us for help in choosing the correct configuration for your marine engine or fuel emulsion application.






