Portable Doppler Flow Meters
ALSONIC-DAVM
- Primarily used for sewers and channels with heavy particles of up to 40%
- Available for open channel diameters of 150 – 6000 mm (6-240) inches with depths of 20-10000 mm (3/4-400 inches)
- IP68 transducer with both flow and level measurement, with mounting ring at bottom of channel
- Data logger function; includes date, totalizer, signal condition, etc.
- Available for both portable and fixed (wall mount) applications
- SDI-12 datalogger and GPRS options
| Meassuring Principle: | Doppler Area Velocity |
| Applications: | Partially full pipe: 6″~240″ (150-6000mm), Open Channel 8″~400″ (200-10000mm) |
| Fluid Temperature: | -4~140°F (-20°C~+60°C) |
| Display: | 4.5″ LCD |
| Velocity: | Measuring Range: 0.65~5.25ft/s (0.2-1.6m/s); Opt: 0.65~39ft/s (0.2-12m/s) (bi-directional); Accuracy: ±1% RD; Resolution:0.04 in/sec (1mm/s) |
| Depth (ultrasonic): | Measuring Range: 3/4″~400″ (20mm to 5000mm), (5m); Accuracy: ±1% FS; Frequency: 1 MHZ, Resolution: 0.04″ (1mm) |
| Depth (pressure):: | Measuring Range: 3/4″~400″ (20mm to 10000mm), (10m); Accuracy: ±1% RD; Resolution: 0.04″ (1mm) |
| Particle concentration: | >50 ppm |
| Transmitter | Wall mount, portable |
| Enclosure Material: | Wall mount: GFRP; Portable: ABS |
| Display: | 4.5″ LCD |
| Input: | RS485, One wire |
| Protection: | Wall mount: IP66; Portable: IP67 |
| Transducer: | IP68 (Submersible) |
| Frequency: | 2 MHz |
| Weight: | Wall mount: 5.3lb (2.4 kg); Portable: 6.6lb (3 kg) |
| Power Supply: | Wall mount: AC: 85-265V, 45~63Hz, DC: 12-28V, Imax=23mA; Portable: Battery: 11.1V, 6600mAh, AC charger: 220VAC, 1-2A |
| Outputs: | velocity, depth, temperature, conductivity, tilt |
| Data logger: | 16 GB |
| Max. Cable Length: | std: 15m;; up to 60m for SDI-12; up to 500m for RS485 |
ALSONIC-DAVM Installation
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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.
