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Ultrasonic Doppler Flowmeter
Category:
keyword:
Water Level Sensor section
1. Equipment introduction:
Doppler ultrasonic flowmeter flow measurement is based on the Doppler effect, where the probe emits a beam of ultrasonic waves obliquely upwards. The ultrasonic waves propagate in the fluid, which may contain impurities such as bubbles or particles (it can be assumed that the impurities in the fluid have the same velocity as the water flow). When the ultrasonic waves come into contact with the impurities in the fluid, the reflected ultrasonic waves will produce a Doppler frequency shift Δ f, which is proportional to the flow velocity. The flow velocity of a fluid can be measured by measuring the Doppler frequency shift Δ f.
2. Application direction:
This device is widely used in sponge cities, water supply/drainage networks, black and odorous water bodies, natural rivers, open channels, reservoirs, scientific research flow field analysis, liquid level detection and other scenarios.
3. Installation diagram:
4. Advantages and features of equipment:
◆ The sensor supports both instantaneous flow and cumulative flow;
◆ Can measure the flow velocity of still water;
◆ Can measure the flow rate of non full pipes, full pipes, and open channels;
◆ Can measure the flow rate of circular, rectangular, trapezoidal, and triangular cross-sections;
◆ Wide range of flow velocity measurement, 0~10m/s, bidirectional;
◆ High accuracy of flow velocity measurement, with an error of 1mm/s;
◆ Ultrasonic measurement of liquid level has high accuracy, with an error of 1mm (within 2m);
◆ Pure physical method measurement, no calibration, no calibration required;
◆ Support static pressure liquid level measurement;
◆ Support temperature compensation flow rate measurement and liquid level measurement;
◆ Supports RS485 Modbus RTU protocol;
◆ The sensor has a protection level of IP68 and supports long-term underwater work;
◆ Online solution: display or RTU+sensor+dedicated bracket;
◆ Portable solution: Sensor+handheld device+measuring rod, carrying case to accommodate all accessories.
Technical parameters
|
parameter |
Instructions |
|
Flow rate range |
0.02~6.5m/s (can be extended) |
|
Flow rate resolution |
0.001m/s |
|
Flow rate accuracy |
0.01m/s |
|
Static pressure liquid level range |
0.01~10m(expandable) |
|
Static pressure liquid level accuracy |
±0.5%FS |
|
Static pressure liquid level resolution |
0.001m |
|
Temperature range |
-20~65℃ |
|
Accuracy of water temperature measurement |
±0.5℃ |
|
Temperature resolution |
0.1℃ |
|
Instantaneous flow range |
0.001 cubic meters/second ~ 99.99 cubic meters/second |
|
Cumulative flow |
0~999999999 cubic meters |
|
Data collection interval |
0~999S Adjustable |
|
Probe material |
Abstract |
|
Protection level |
IP68 |
|
Power supply |
DC7.2~15V, standard DC12V |
|
Power consumption |
≤45mA |
|
Communication interface |
RS485, Modbus |
|
Working temperature |
-20~65℃ |
Doppler Flowmeter PRODUCT SPECIFICATION
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