Portasonic® 2.FL0

New upgrade launched February 2021 – Portable ultrasonic clamp on flow meter non-invasively measuring the flow rates of clean liquids in pipes with built-in thickness gauge and ability to incorporate heat quantity measurements

3rd Generation Portable Clamp-on Ultrasonic Transit Time Flow Meter
PN: 2618949-PSO
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Portasonic 2.FLO portable clamp on flow meter: The perfect product and Award Winning Portasonic  to non-invasively measure the flow of any clean liquid through a wide variety of pipes. Can also be combined with the Portasonic® 2.FLO Calculator to calculate and store internal pressure readings!


Commonly used for measuring any clean liquid in pipes with a gas/solid content of less than 10% volume. Includes process industry, fire sprinkler systems, waste water, fuel monitoring, foam proportioner testing just to name a few.

Multiple Metrics

Device includes built in thickness gauge (includes A-scan functionality), volumetric flow rate, mass flow rate, energy (heat quantity) flow rate all from one instrument

Total Flow 

All measured values can be totalised giving you the total flow rate that has been measured during a particular measurement session


Unique Human Machine Interface (HMI) driven menu that emphasises intuitiveness and user-friendliness


  • Versatile: Capable of working on pipes DN15 – DN 2500, across multiple different pipes/pipe sections. Large internal database of pipe, fluid and lining materials (19+ for fluids, 23+ for pipe and lining materials)
  • Clamp-on: Clamp-on therefore no installation costs such as drilling into pipes and no downtime to the pipe network is present
  • Reliable: Measures flow velocities between 0.01 m/s – 25m/s.
  • Diagnostics: It has a built-in signal oscilloscope for sensor positioning and diagnostics to achieve maximum accuracy with the measurement while providing visibility of the potential issues with the installation for troubleshooting purposes.
  • Non-Contact: The fluid cannot damage the flowmeter, which could contribute to a longer lifespan and lower maintenance cost compared to inline flowmeters which are in contact with the fluid and risk being damaged by the pressurised flowing fluid


There are so many advantages and benefits of using the Portasonic® 2.FL0:

  • Accurate to +/- 0.5% under ideal conditions. Resolution of 0.25mm/s. Repeatability of 0.15% of measured value.
  • No risk: As there is no contact with the fluid being measured, there is no risk of pressure loss throughout your pipe network
  • Long life: IP65 main unit enclosure. Battery life up to 12 hours’ continuous use, standard 9V PP3 battery
  • Robust: Sensors temperature range -20°C to +150°C.. Sensors rated IP66

Part of the Level-Flow-Pressure Range

See the other 3 products in this range:

  • Portatank – handheld ultrasonic tank liquid level indicator
  • Permaflow – fixed clamp-on ultrasonic flow meter
  • Portasonic CALCULATOR – convert flow rate into pressure

level-flow-pressure final News Pieces Images (7)

Get in touch to solve your flow rate measuring now

  • use the enquiry form at the top of the page
  • download the free brochure
  • check our the Portasonic® 2.FL0 Case Study
  • go on our live webchat  
  • further contact details on the Contact Us page:

Contact Us


1 x Portasonic® 2.FL0 Main Unit 

1 x Pair of Standard Transducers for pipes DN15 – DN700 (set of 2)

1 x Pair of Beaded Chain Clamps (set of 2)

1 x 10mm width Ultrasonic Thickness Gauge Probe (measures 2mm – 20mm)

1 x Measuring Tape

1 x Ultrasonic Couplant

1 x User Manual

1 x Installation Manual

1 x Robust Carrying Case


220mm (L) x 85mm (W) x 33mm (D)


434 grams

Pipe Diameter Range

DN15 – DN 2500 (1/2 inch – 98 inches), please enquire for larger pipes

Liquid Types

Most clean liquids with gas/solids less than 10% volume


+/- 0.5% of measured value under ideal conditions

Flow Velocity

0.01m/s – 25 m/s


0.25 mm/s


0.15% of measured value

Turn Down Ratio


Measurement Rate

1 Hz as standard

Measurement Units

Flow Velocity, Volumetric Flow Rate, Mass Flow Rate, Energy Flow Rate (Heat Quantity), Volume, Mass, Energy


Full 128 x 68 pixel graphics with backlight

Additional Features

  • Integrated thickness gauge, measures 2mm – 20mm range
  • Signal oscilloscope for sensor positioning and diagnostics

Power Supply

9V PP3 battery, up to 12 hours continuous use

Operating Temperature

Main Unit: -10°C to +65°C

Sensors: -20°C to +150° C

IP Rating

Main Unit: IP 65 enclosure

Sensors: IP 66

Sensor Dimensions

  • Standard Model No. DM10: 40mm (L) x 20mm (W) x 25mm (D)
  • Large Model No. DS10: 60mm (L) x 30mm (W) x 35mm (D)

Sensor Material

Housing: Stainless SteelFront Face: PEEK (Polyetheretherketone)

Cable Length

1.5m as standard (additional lengths available upon request)


Main Unit: 3 years

Sensor: 1 year

Lifetime customer support


CE, Coltraco is ISO 9001:2015 and ISO 14001 approved
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