Flowmeters
TL-DF Series (DF-LSS510)
Ultrasonic Doppler Flow Meter
Intelligent drainage monitoring for partially filled pipes and open channels
Key Features
- Supports full and partially filled pipe flow
- Early warning for overflow and water accumulation
- IP68 protection for permanent submersible use
- Integrated IoT connectivity: 4G, LoRa, NB-IoT, GPS
- TF card and USB data storage
Product Overview
The TL-DF Series Ultrasonic Doppler Flow Meter is designed for intelligent drainage monitoring in partially filled pipes, open channels, and drainage networks. It supports full pipe flow, partially full pipe flow, water accumulation, and overflow detection. The integrated sensor and host design features IP68 protection for permanent submersible installation.
Technical Specifications
| Measuring Range | 0 ~ 9,999,999 m³ (thousand cubic meters) |
| Flow Velocity | 0.03 ~ ±6 m/s (Doppler method) |
| Measuring Accuracy | ±2% (Doppler), ±1% (time difference) |
| Water Depth Range | 0 ~ 200m (sensor dependent) |
| Water Depth Accuracy | ±0.1mm |
| Signal Output | 4–20mA, RS485 Modbus, 4G, LoRa, NB-IoT, GPS, LAN |
| Relay Output | Four-way NPN / four-way relay (AC:5A 250V, DC:10A 24V) |
| Storage | TF card (32G), USB |
| Power Supply | 3.7 ~ 28VDC, 220VAC |
| Battery Supply | 12V/30Ah, 12V/60Ah, 12V/90Ah |
| Material | ABS, Stainless steel 304 |
| Protection Level | IP60, IP68 |
* Specifications are subject to change without notice. Contact us for the latest datasheet.
Features & Highlights
Supports full and partially filled pipe flow
Early warning for overflow and water accumulation
IP68 protection for permanent submersible use
Integrated IoT connectivity: 4G, LoRa, NB-IoT, GPS
TF card and USB data storage
Battery backup: 12V/30Ah, 60Ah, or 90Ah options
Remote monitoring via cloud platform
Typical Applications
Urban drainage network monitoringStormwater and sewer overflow detectionPartially filled pipe flow measurementRiver and canal flow monitoringSmart city water managementEnvironmental compliance monitoring
Need more technical information?
Our engineers can provide datasheets, installation guidance, and application support.