HB-DFM300 Doppler Flow Meter
Product Introduction:
The Doppler flowmeter probe measures flow velocity based on the Doppler effect principle, and can measure water level using a pressure sensor and water temperature using a temperature sensor. The instrument calculates the current cross-sectional area of the water flow based on the channel type selected on the interface, the input channel parameters, and the liquid level information measured by the Doppler flowmeter probe. This area, combined with the current flow velocity, yields the current instantaneous flow rate. Finally, the cumulative flow rate is calculated based on the sampling time interval.
PRODUCT DESCRIPTION
• Employs Modbus communication protocol and communicates with handheld devices via RS485 bus.
• The underwater sensor equipment is easy to install.
• The entire device is electronically designed, with wide voltage power supply, low power consumption, and no mechanical parts.
• It features accurate and stable measurement, high reliability, and strong anti-interference capabilities.
• It has a wide range of applications and can be used in various aquatic environments, from tap water to Yellow River water.
TECHNICAL DATASHEETS
| Item | Technical Specification |
| Flow Velocity Range | 0.01~5m/s (expandable) |
| Flow Velocity Resolution | 0.001m/s |
| Flow Velocity Accuracy | ±1.0%, ±1cm/s |
| Static Liquid Level Range | 0~10m (expandable) |
| Static Liquid Level Accuracy | ±0.1%FS |
| Static Liquid Level Resolution | 0.001m |
| Temperature Range | -25~70℃ |
| Water Temperature Accuracy | ±0.4℃ |
| Temperature Resolution | 0.1℃ |
| Instantaneous Flow Rate | 0.001~99.99 cubic meters per second |
| Cumulative Flow | 0~999999999 cubic meters |
| Data Update Frequency | 1Hz |
| Probe Material | ABS |
| Protection Grade | IP68 |
| Power Supply | DC 12V |
| Power Consumption | ≤60mA during measurement; ＜20mA in sleep mode |
| Communication Interface | RS485, Modbus protocol |
| Operating Temperature | -10~60℃ |
| Operating Pressure | 0~50 meters water depth |
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