The TrolMaster DFM-3 is a 1.5-inch (3.81 cm) digital inline flow meter designed to measure water or nutrient-solution flow in real time within a commercial irrigation mainline. When integrated with the Aqua-X Pro NFS-2, it enables volume-based irrigation (“Feed by Volume”), allowing each irrigation event to deliver a defined amount of solution rather than simply running for a fixed period. The onboard LCD also provides local real-time flow readings for setup and maintenance.
• SKU: DFM-3
• Pipe Size: 1.5" (3.81 cm)
• Meter Type: Digital inline flow-rate meter
• Compatible System: TrolMaster Aqua-X Pro NFS-2
• Measurement: Real-time volumetric flow of water or nutrient solution
• Display: Built-in LCD with on-site real-time readout
• Irrigation Control: Volume-based “Feed by Volume” when connected to NFS-2
• Installation: Inline on the main irrigation/fertigation header
• Typical Position: Before the mainline branches into individual irrigation zones
• Standalone Monitoring: Yes — LCD can display flow data without an NFS-2
• Automated Volume Control: Requires Aqua-X Pro NFS-2
• Operating Temperature: 32–122°F (0–50°C)
• Humidity Resistance: ≤90% RH
• Fluid Compatibility: Water and nutrient solution
• Available DFM Sizes: DFM-1 (1"), DFM-2 (1.25"), DFM-3 (1.5")
• Line Sizing: Select the meter to match the existing main irrigation header diameter
• Future Functionality: Engineered to support potential leak and line-blockage detection through future firmware/software features; these are not confirmed as currently active functions
• Package Contents: 1× 1.5" Digital Inline Flow Rate Meter
Key Advantage: The DFM-3 allows the Aqua-X Pro to control irrigation based on actual volume delivered rather than elapsed time. This can compensate for variations in pump pressure, elevation, or line conditions that may otherwise cause a time-based irrigation event to over- or under-deliver.