ZT-100 S-Series
Threaded and slip-on flange water cut analyzer for small pipe applications
Threaded Connection Design
The ZT-100 S-Series uses threaded connections for sensor components. Process connection is generally done with slip-on flanges, which cannot be radiographically inspected for weld issues unlike the F-Series weld neck flanges. Process connection may also be threaded (NPT, BSP, BSPT) for smaller pipe sizes such as 1 to 3 inch.
The S-Series provides reliable iso-kinetic water content metering in all small pipe applications. Can be installed inline or in bypass. Built to any piping spec in the materials of your choice. Sizes from 1 to 6 inch (or DN25 to DN200).

Key Features
Flexible Process Connections
Slip-on or weld-neck flanges for standard pipeline installations, plus threaded connections (NPT, BSP, BSPT) for smaller sizes.
Wide Size Range
1" to 8" flange sizes for flanged installations. 1" to 3" threaded sizes for compact screw-in applications.
Hazardous Area Certified
ATEX, ETL, and GOST certification for explosive atmosphere installations worldwide.
Optional Density Compensation
Integrated density compensation option for improved accuracy in applications with varying fluid properties.
Optional Integrated Static Mixer
SM-Series option with integrated static mixer for homogeneous flow conditioning upstream of the sensor element.
Inline or Bypass
Install directly in the process line or in a bypass loop. Built to any piping spec in the materials of your choice.
Technical Specifications
Measurement Performance
| Low Cut | High Cut | |
| Measurement Range | 0–25% | 0–100% |
| Resolution | 0.001% | 0.05% |
| Accuracy | 0.01% | 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 |
Applications
Wellhead Monitoring
Direct installation at the wellhead for real-time water cut trending and water breakthrough detection.
Test Separators
Compact monitoring of separator outlet streams during well testing and production allocation.
Production Manifolds
Individual well monitoring at production manifolds to identify high-water-cut wells and optimise production.
Process Connections
Installation in existing instrument tapping points for retrofit water cut monitoring without pipeline modifications.
Configure Your ZT-100 S-Series
Specify your connection size, thread type, process conditions and certifications and we will provide a complete quotation.


