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NTBE-OCFM-DIG · Non-contact OCFM for V-Notch, Rectangular Weir & Parshall Flume
Ultrasonic Open Channel Flow Meter
Non-contact ultrasonic open channel flow meter (OCFM) for measuring liquid flow in open channels, drains, canals and wastewater treatment plants. The ultrasonic sensor measures the liquid level above a calibrated hydraulic structure (V-Notch / Rectangular Weir / Parshall Flume) and the transmitter converts level to flow rate using the selected weir/flume equation.
Key Features
- ✓Suitable for V-Notch / Rectangular Weir / Parshall Flume
- ✓Flow display in m³/hr, m³/day with totalizer
- ✓Ultrasonic sensor with 10 m cable
- ✓Accuracy ±1% F.S.
- ✓Output: 4–20 mA + RS-485 (Modbus)
- ✓Protection IP65 / IP68
- ✓Optional 4G telemetry data logger
- ✓Compatible with CPCB / HSPCB server
- ✓Complete installation, calibration & commissioning
Applications
ETP / STP / CETP outletsDrains & storm-water channelsIrrigation canalsIndustrial discharge monitoring
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Technical Specifications
| Principle | Non-contact ultrasonic level → flow |
| Structures | V-Notch / Rectangular Weir / Parshall Flume |
| Accuracy | ±1% F.S. |
| Sensor Cable | 10 m |
| Output | 4–20 mA + RS-485 Modbus |
| Power | 230 V AC |
| Protection | IP65 / IP68 |
| Telemetry | Optional 4G data logger (CPCB/HSPCB) |