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Our goal is to provide a variety of choices for any flow measurement application at industry leading prices.

Graphic Multi-Channel Permanent Ultrasonic Meter


SmartMeasurement’s Alsonic DSP fixed-mount transit-time ultrasonic flowmeter uses clamp-on transducers for non-invasive liquid flow rate measurement. This clamp on flow meter uses our patented Fine Time measurement technology, which utilizes the meter’s ultrasonic beams to measure fluid velocity at pico-second time intervals. The rapid succession of velocity measurements enables accurate, drift-free flow measurement of ultraclean to dirty liquids containing up to 30% solids or gas bubbles.

The Alsonic ultrasonic flow meter’s DSP technology enables “cross correlation” of ideal signals to cancel extraneous noise and create a three-dimensional cross section of the flow velocity distribution profile of the medium flowing through the pipe. Using advanced technology available only from SmartMeasurement, an innovative “cross correlation mode” expands the Alsonic DSP’s measuring capabilities to include other applications previously measured only by Doppler meters, such as raw sewage, sludge, slurries, and other extremely attenuating multiphase fluids.


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An optional dual-channel/dual-path model can be configured for a variety of uses. These specialized ultrasonic flow meters can be used for flow measurement in two different pipes, leak detection via measurements of two different locations on the same pipe, and dual-path measurement at one location for maximum accuracy.

Request a quote on an Alsonic DSP transit-time ultrasonic flow meter for your application. Contact SmartMeasurement to learn more.

  • Color graphic LCD display (128 x 64) for flow, total & signal shape
  • 4.0 Mbytes data logger with up to 200,000 data fields
  • Velocities from ±0.03 to ±40 feet/sec (±0.01 to ± 12 m/s)
  • Measures any liquids containing solids ≤ 30% suspended solids, including waste water
  • Transducers available for pipe sizes from ½” to 240″ (15 to 6000 mm)
  • Accuracies of ±1.0% of reading with single path and ±0.5% of reading with dual path
  • Oscilloscope feature indicating three-dimensional analysis of the flow stream
  • Touch-pad key function
  • Patented Fine Time measurement technology
  • Data logger function includes date, totalizer, and diagnostics
  • Response time _ 1 second
Measuring Principle:Transit time differential
Pipe Sizes:B Type : ½” ~ 4′ (15 mm ~ 100 mm)C Type : 2″ ~ 12″ (50 mm ~ 300 mm)D Type : 12″ ~ 40″ (200 mm ~ 1000 mm)E Type : 20″ ~ 240″ (500 mm ~ 6000 mm)
Pipe Material:Cast Iron, Stainless Steel, Ductile Iron, Copper, PVC, PVDF, Aluminum, Asbestos, Fiberglass
Liner Material:Tar Epoxy, Rubber, Mortar, Polypropylene, Polystryal, Polystyrene, Polyester, Ebonite, Polyethylene, Teflon
Accuracy:± 1% of reading with single path± 0.5% of reading with dual path
Repeatability:± 0.2% of reading
Engineering Units:m³, Liter, US Gallon, Imperial Gallon, Million Gallon, Cubic Feet, US Barrels, Imperial Barrels, Oil Barrel
Flowrate:4 ½ digit
Totalizer:10-digit, Positive, Negative & Net values
Time Units:Second, Minute, Hour, Day
Display:Color Graphic LCD 128×64 with backlight
Other:Oscilloscope function for diagnostics
Protection:Display: NEMA 4 (IP65)Transducers: IP68 (Submersible)
Response Time:Less than 1 second
Keypad:16-key touch pad
Ambient temperature:-4 ~ 140 °F (-20 ~ 60 °C)
Fluid Velocity:0.03 ~ ±40 feet/sec (0.01 ~ ± 12 m/s)
Resolution:0.003 feet/sec (0.001 m/s)
Data logger:4.0 Mbytes,up to 200,000 bits of data
Weight:7.25 lbs (3.3 Kg)
Mounting:wall mounting
Max. Cable Length:650′ (200 M)
Power Supply:90 ~ 260VAC 50/60 Hz12-24 VDC (compact type only; 10L & 10LX)
Alarm:two alarm oututs configurable for total, hi/low flow rate
Data storage:Operation parameters and totalization data are stored by EEPROM for more than 10 years
Power Consumption:Less than 20W
Dimensions:See data sheet
Output:two analog 4-20 mA

Request a quote on an Alsonic DSP clamp on flow meter, or contact SmartMeasurement for more information.