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

Handheld Ultrasonic Flow Meter – Clamp On


SmartMeasurement’s Alsonic HL ultrasonic flow meter is a low cost, portable unit with clamp on transducers for non-invasive liquid flow rate measurement. This handheld ultrasonic flow meter makes use of proven transit-time ultrasonic measuring techniques, which provide excellent accuracy and easy setup and installation.

This easy-to-use clamp on flow meter comes standard with a rugged, waterproof carrying case that allows the display, transducers, and cables to be easily transported between measuring locations.

Three different transducer sizes are available to fit pipe sizes ranging from ½” (15 mm) to 240” (6,000 mm). Additional available features include pulse control, RS-232 communication, user-selectable engineering units, and a data logger function.


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Request a quote on an Alsonic HL handheld ultrasonic flow meter for your application. Contact SmartMeasurement to learn more.
  • 4-line LCD display with flowrate, totalizer & diagnostics
  • Small size (8.25″ x 3.50″ x 1.48″) and lightweight (≈1 lb.)
  • Wide range of fluid velocities: 0.03 to ±105 feet/sec. (0.01 to ± 32 m/s)
  • Long-life Ni-MH battery for up to 12 hours of continuous operation
  • Transducers for pipe sizes ranging from ½” to 240″ (15 to 6000 mm)
  • High accuracy: ±0.5% of reading
  • Clamp on flow meter transducers feature integral magnet for installation on metal pipe without use of a mounting belt
  • Data logger function includes date, totalizer & signal condition diagnostic
  • Fast response time: less than 1 second
Measuring Principle:Transit time differential
Pipe Size:SCS Type: ½” ~ 4″ (15 mm ~ 100 mm)SCM Type: 2 ~ 38″ (50 mm ~ 1000 mm)SCL: 12″ ~ 240″ (300 mm ~ 6000 mm)SHS Type: ½” ~ 4″ (15 mm ~ 100 mm)SHL Type: 2″ ~ 38″ (50 mm ~ 1000 mm)
Pipe Material:Cast Iron, Stainless Steel, Ductle Iron Copper, PVC, Aluminum, Asbestos Fiberglass, ect.
Liner Material:Tar Epoxy, Rubber, Mortar, Polypropylene, Polystryal, Polystryene, Polyester, Ebonite, Polyethylene, Teflon, ect.
Accuracy:±1% ~ ±2% of reading (1.5 ~ 100 feet/sec.)±0.5% of reading (online calibration)
Repeatability:±0.2% of reading
Engineering Units:m³, Liter, US gallon, Imperial gallon, Million Gallons, Cubic Feet, US Barrels, Imperial Barrels, Oil Barrels
Time Units:Second, Minute, Hour, Day
Display:4 Line LCD with backlight; 5 digits with decimal point for flow rate, 8 digits for Forward, Reverse & Net totalized values
Protection:IP 65 (Hand-held display), IP68 (Transducers)
Response Time:Less than 1 second
Keypad:16 Key with tactile action
Ambient temperature:-4 ~ 122°F (-20 ~ 50°C)
Fluid Velocity:0.03 ~ ±105 feet/sec.
Resolution:0.0003 feet/sec. (0.0001 m/s)
Data logger:64 data points including flowrate, totalizer, time & date
Weight:1.1 lbs (0.5 kg)
Built-in battery:NiMH Battery
Operation Time:> 12 Hours
Charger:90 ~ 260VAC 50/60 Hz, 8-10 hr charging
Alarm:High/Low with buzzer
Data storage:Operation parameters and totalization data are stored in EEPROM for more than 10 years
Power Consumption:Less than 2W
Dimensions:3.25″ x 3.50″ x 1.18″
Request a quote on an Alsonic HL ultrasonic flow meter, or contact SmartMeasurement for more information.