Introduction
Ultrasonic open channel flow meter from industrial instrumentation supplier gallop, mainly used for flow measurement in standard channels and weirs. Non-contact measurement, the product is durable and affordable. Compact type, split type, split waterproof type, various styles available.
Model: GLP-5A
MOQ: 1PCS
Payment: Bank transfer/ Wire transfer
Lead Time: 3-5 days
OEM/ODM: Available
Built-in multiple algorithms for various standard water channels.
Split waterproof type or compact type, a variety of options, more convenient to use.
Blind area can be manually set to shield the interference signal near the probe.
Transducer built-in temperature sensor, real-time automatic temperature compensation.
| Parameter | Description |
| Applicable | Parshall flume, rectangular weir, equal width weir, triangular weir |
| Voltage | Standard 24V DC/220V AC |
| Output | 4-20mA/RS485/RS232 |
| Wiring | 4-wires connection of transducer and transmitter (maximum transmission distance 100m) |
| Blind zone | 0.25-0.45m, the blind zone is inherent |
| Velocity | 10L/s~10m³/s（Determined by the type and specification of the flume） |
| Protection level | IP68/IP65 |
| Thread size | M66*3 |
| Opening | 68mm |
| Transducer material | High strength engineering nylon |
| Transmitter material | Cast aluminum |
1. Environmental monitoring field
Ultrasonic open channel flowmeter is used to monitor wastewater discharge, sewage treatment . Through the flow monitoring of the discharge or treatment facilities inlet and outlet, can optimise the sewage treatment process, improve the efficiency of treatment.
2. Hydrological survey work
Ultrasonic open channel flowmeter is used to measure the flow of rivers, lakes and other water bodies to assess the status of water resources and hydrological characteristics.
3. Urban water supply and drainage management
Ultrasonic open channel flowmeter is used to monitor the flow of water supply, it can real-time understanding of the water supply situation, to ensure the safety of water supply; This application helps to improve the efficiency and quality of urban water supply and drainage management.
Host Dimension :(unit: mm, including waterproof connectors)
Probe Dimension：(unit: mm)
Gallop ultrasonic open channel flow meters deliver precise, non-contact flow measurement for irrigation channels, wastewater plants, and industrial discharge. Here’s why system integrators and distributors worldwide choose us:
Non-Contact Measurement: Avoids corrosion, pressure loss, or sensor damage from dirty fluids.
High Accuracy: ±1.0% with level and flow conversion using built-in formulas.
Multiple Flow Calculations: Built-in algorithms for weirs (V-notch, rectangular, trapezoidal) and flumes (Parshall, Palmer-Bowlus).
Wide Measurement Range: Suitable for channels from 0.3 to 10 meters wide.
Plug-and-Play Setup: Easy installation with wall-mount or panel-mount controller.
Long-Term Stability: Advanced anti-interference and temperature compensation for outdoor use.
Remote Monitoring: Optional GPRS/RS485/4G output for data integration.
Q: What types of open channels can your meters measure?
A: Any non-full flow channel using a flume or weir, including Parshall, V-notch, rectangular, and trapezoidal weirs.
Q: Do I need to build a flume for accurate readings?
A: Yes, flow rate is calculated from water level and channel geometry. A flume or weir is required for volume accuracy.
Q: Can I get data remotely?
A: Yes, models support Modbus RTU, RS485, and wireless (GPRS/4G) communication.
Q: What is your MOQ for wholesale orders?
A: MOQ for wholesale pricing is 10 units. For OEM, MOQ is 30–50 units depending on customization.
Q: Do you offer calibration support?
A: Each unit is factory calibrated. We can also provide simulated calibration reports or local partner assistance.
