Portable Doppler Flow Meters
ALSONIC-DAVM

The ALSONIC-DAVM area velocity flow meter is designed for applications in full or partially full pipes 150 – 6000 mm (6-240 inches) in diameter, or open channels with flow widths 200-10000mm (8-400 inches) and depths of 20-10000 mm (3/4-400 inches). lt uses advanced Doppler profiling technology to directly measure velocity profiles making it the best choice for sites with nonuniform, rapidly changing, backwatered, near-zero, negative or reverse flow conditions.
This eliminates the need for onsite calibration, thereby reducing significantly the cost of installation. Used in conjunction with an integral upward-looking ultrasonic or a secondary external pressure sensor (optional) for determining the depth, the meter uses a numerical model for averaged velocity in the entire cross-section and the continuity equation to calculate flow. Information on the level, velocity, flow, temperature, conductivity, and position offset can be taken from the transmitter/flow computer or directly from the sensor. This meter will log up to 16GB of data. In addition, the flow meter can control a sampler in a flow-proportional sampling mode by means of pulse output.
Doppler Open Channel Measurement: ALSONIC-DAVM
SmartMeasurement’s ALSONIC-DAVM is a versatile open-channel flow meter utilizing Doppler technology for velocity measurement, combined with an integrated hydrostatic level measurement transducer. This dual-functionality allows for accurate tracking of fluid velocity and determination of the cross-sectional area of the flow.
Key Features and Functionality
- Doppler Transducer: Essential for tracking fluid velocity in channels with particles or gas bubbles.
- Hydrostatic Level Transmitter: Works in tandem with the Doppler transducer to calculate the flow area.
- Suitability: Ideal for sewer and open channel applications with sizes from 3-15 feet (1-5 meters) and higher solids content.
Advantages of ALSONIC-DAVM
- Cost-Effective: The single-sensor design makes it an economical choice.
- Easy Installation: Designed for quick and straightforward setup.
- Versatile Display Options: Available in both fixed-install and portable configurations.
For detailed information on installation requirements, please refer to our PDF guide.
The ALSONIC-DAVM is particularly effective in environments where clean fluids are not present, making it a reliable choice for specific open channel flow measurement needs.



