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Browes Portalevel® range


Portable Ultrasonic Flow MeterP/N: PSO12POAEx-stockSame-Day Dispatch*Request Quote*Order must be placed before 1pm UK office hours


Records PORTALEVEL® results by agent weight


Records PORTALEVEL® results by agent weight



Portasonic consists of a handheld portable clamp-on transit time flow meter device for accurate flow measurement from outside a pipe – especially for fire protection water sprinkler and fire hydrant systems. The unique clamp-on fixture design makes the installation very straightforward and requires no special tools or skills and due to the non-invasive nature of clamp-on transducers, there is no pressure drop, no moving parts, no leaks, and no risk of contamination or corrosion. Ideal for the measurement of flows in clean, non-aerated fluids such as water, water/glycol and oils in full pipes from 1/2” to 180” (12 to 4570 mm) diameter can be measured and the ultrasonic signal penetrates all common metal and plastic pipe materials.

Works on almostany liquid
Lifetime support
Calibration & trainingcertificates available1
Ultrasonic technology

How it Works

Transit Time flow meters utilize two transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a vertical or horizontal pipe at a specific distance calculated by the instrument. The elapsed time between transmitted and received signals varies very slightly depending on whether the signal is traveling upstream or downstream and by comparing these time differences an accurate calculation of the flow rate is possible and is displayed in your choice of engineering units. As the ultrasonic beam crosses the pipe, compensation for laminar or turbulent flow is automatic.

Depending on the application and flow profile, the transducers can be mounted in V-method in which case the ultra sound transverses the pipe twice, the W-method in which case the ultra sound transverses the pipe four times or the Z-method in which case the transducers are mounted on opposite sides of the pipe and the ultra sound transverses the pipe only once. These modes are automatically selected by the instrument and are also user selectable. (X denotes the distance between the transducers, this is automatically calculated by the instrument at setup depending on the inputted application data)

Technical Specifications

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  • Height:204 mm (5.75 inches)
  • Width:100mm (3.50 inches)
  • Depth:35 mm (1.00 inches)
  • Weight:600 grams (11.5 ounces)


±1.0%-2.0% of reading at rates >0.5 m/s ±0.003 m/s of reading at rates


2.25MHz: 3-250 mm (0.120” -10”); 3.50MHz: 2-150mm (0.080” -6”); 5MHz 1-50mm (0.040” -2”)


0 ~ ±40ft/s (0 ~ ± 12 m/s), bi-directional

Liquids 1

Virtually any liquid containing less than 2% total suspended solids or aeration )


Ultrasonic Tranducer Head x2 :
  • 42x25x25mm or 60x43x43 mm or 80x53x53mm diameter head
  • Cable length Std: 4m (12ft); (optional 25m (75ft))


OCT Pulse, Relay, RS232C or RS484 Hart +(4~20mA), Modbus


Flow Rate: 0.001 ft/s (0.0003 m/s)

Power Supply

2 AAA Ni-H built-in batteries (battery life approx 12 hours)

1 x Charger 100V-240VAC


Backlit LCD 4 line×16 character English menu. Standard dispalys:
  • Total flow
  • Flow Rate
  • Velocity
  • Meter running status etc.

Operating Temperature

Std. Temp. Transducer: -40C ~ 121C (-40F ~ 250F) High Temp. Transducer: -40C ~ 250C (-40F ~ 484F)


Main Unit: 1 Years WarrantyLifetime Customer Support

Package Contents

  • 1 Potasonic unit
  • 1 Clamp-on Sensor & Cables
  • 1 Hardy Carrying Case
  • Calibration certificate
  • Operating Instructions
  • Sensor couplant (gel)
  1. Please check with our technical support team for confirmation on a particular fluid
  2. Download Specifications PDF version here-

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