| Type |
Variable Area Water Flowmeters, Ultrasonic Flow meters |
| Material |
Metal |
| Customized Support |
OEM, ODM |
|
Ultrasonic Type |
Radar Type |
| Measurement Principle |
Uses sound waves to measure the flow velocity by analyzing the time taken for an ultrasonic pulse to travel between the transmitter and the fluid surface |
Utilizes microwave radar waves to measure the flow velocity by detecting the frequency shift of the reflected radar signal from the fluid surface |
| Non-Contact Measurement |
Yes |
Yes |
| Accuracy (Flow) |
1% to 0.5% |
0.05% FS |
| Accuracy (Level) |
0.25% to 0.5% |
±2% FS |
| Measurement Range (Level) |
9.84 ft (3 m) |
22.96 ft to 131.23 ft (7 m to 40 m) |
| Analog Output |
4 to 20 mA/750 Ω load |
4 mA to 20 mA |
| Relay Output |
4 channels AC 250 V / 8 A or Dc 30 V / 5 A state programmable |
– |
| Data Transmission |
RS485, RS232 communication, MODBUS protocol (optional) |
RS485 or RS232, LoRa (wireless option), NB-IoT (wireless option), 4G RTU (wireless option) |
| Sensitivity to Environmental Conditions |
Sensitive to temperature variations, wind, and atmospheric conditions that may affect sound wave propagation |
Less affected by temperature, wind, or other environmental conditions; performs well in harsh environments |
| Installation Complexity |
Generally easy to install with minimal calibration required. Requires a clear path for the ultrasonic pulse to travel |
Slightly more complex installation due to the need for precise alignment, but more robust in diverse conditions |
| Maintenance Requirements |
Low maintenance; however, sensor surfaces may need periodic cleaning to ensure accuracy |
Very low maintenance; radar sensors are less prone to fouling and generally require less frequent cleaning |
| Cost |
Generally more affordable, making it a cost-effective option for smaller projects |
Higher initial cost due to advanced technology, but offers long-term savings in maintenance and reliability |
| Suitable Applications |
Ideal for applications where cost is a concern and environmental conditions are stable, such as municipal water management, irrigation systems, and small wastewater treatment facilities |
Best for challenging environments, large channels, or applications requiring high accuracy, such as in industrial wastewater management, flood monitoring, and hydrological studies |
