Portable Doppler flow meter
Portable Doppler flow meter:
- The sensor supports instantaneous flow and cumulative flow functions;
- It can measure the flow rate of water;
- It can measure the flow rate of partially full pipes, full pipes and open channels;
- It can measure the flow rate of rectangular, circular, trapezoidal and triangular sections;
- The flow rate measurement range is wide, 0 ~ 10m/s, bidirectional;
- The flow rate measurement accuracy is high, 1mm/s error;
- The ultrasonic measurement of liquid level has high accuracy, error 1mm (within 2m);
- Pure physical method measurement, no calibration;
- Support static pressure measurement of liquid level;
- Support temperature compensated flow rate measurement and liquid level measurement;
- ModbusRTU protocol;
- The sensor protection level is IP68, supporting long-term underwater work;
- Portable solution: sensor + handheld device + measuring rod, the suitcase can accommodate all accessories
Product Overview:
The portable Doppler flowmeter is a flow velocity and flow measurement instrument used in rivers, open channels and pipelines. It uses ultrasonic detection technology, has high measurement accuracy, good stability, is less affected by environmental factors, has no rotating parts, has low maintenance frequency and high working reliability. It is the preferred product for portable flow velocity and flow measurement.
Principle: Doppler effect, the frequency difference between the transmitted and received ultrasonic waves is related to the flow rate, and the time difference between the transmitted and received ultrasonic waves is related to the liquid level. The static pressure liquid level is used for working conditions where a large liquid level range is required, and the ambient temperature measurement is used to correct the actual propagation speed of the ultrasonic wave.
Application:
Urban underground pipe network: It can be used to monitor and measure the water flow in urban underground pipes, helping city managers understand the state of water supply and drainage system.
Agricultural irrigation water: In farmland irrigation, measure the flow of irrigation channels to ensure the reasonable amount of irrigation water and improve the efficiency of water resource utilization.
Natural river monitoring: In river ecological monitoring, the flow and velocity of rivers are measured to assess the ecological health of rivers.
Product parameters:
Sensor performance indicators:
| Flow rate range | 0～10m/s，bidirectional |
| Flow rate resolution | 0.001m/s |
| Flow rate accuracy
| 0.001m/s (when flow velocity ≤5m/s); 0.02m/s or 0.3% of actual peak velocity (use the larger value) (when flow velocity >5m/s) |
| Ultrasonic level range | 6.5m |
| Ultrasonic level accuracy | 0.001m |
| Ultrasonic level resolution | 0.0005m |
| Hydrostatic level range | 0~10m |
| Hydrostatic level accuracy | ±0.1%FS |
| Hydrostatic level resolution | 0.001m |
| Temperature range | -20~60℃ |
