Accurate, Reliable and Flexible Flow Meter – Coltraco

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The device comes with clamp on transducers for non-invasive measurement. The Portasonic® 2.FL0 utilizes two transducers, one that acts as ultrasonic transmitters and the other a receivers. There are three principles of operation; V-method, W-method or Z-method which refers to transducer positioning. The software calculates the time it takes for the ultrasonic pulse to pass from the transmitter to the receiver, which is dependent on the flow rate.
The Portasonic® 2.FL0 is an accurate, reliable and flexible ultrasonic flow meter. The ultrasonic flow meter comes in a ready to go package with all that is needed to conduct flow rate testing.

  • Accurate – the Portasonic 2.FL0 is accurate to +/-1% accuracy
  • Reliable – the Portasonic 2.FL0 is calibrated to ISO17025 standards
  • Flexible – the Portasonic 2.FL0 has 3 modes of operation, making it suitable to different Environments

With no moving parts and an easy digital set up mean it’s a cost effective and time effective
maintenance solution. Reduction of maintenance time and cost is a driving factor within any business operation with pipework installed. Accurate flow data provides the chance to make energy saving measures by fine tuning the systems.

Portasonic® 2.FL0 can be used for spot checks, using an internal, rechargeable battery or for extended continuous operation as a 4-20mA flow transmitter with AC power input. The ease of use and accuracy of Portasonic® 2.FL0 allows for improved business continuity and safer buildings and industrial facilities across a variety of industry verticals. As a highly accurate ultrasonic flow meter, 1% is the accuracy tolerance of the Portasonic® handheld ultrasonic clamp-on non-invasive flow meter at flow rates over 0.2m/s

The Portasonic® 2.FL0 is ideal for testing flow rate in sprinkler systems, pumps and fire hydrants.

Award Winning Technology

The Portasonic® 2.FL0 is award winning technology. In 2019 the Portasonic® 2.FL0 portable ultrasonic flow meter was nominated as Security & Fire Excellence Awards, as Passive / Active Fire Project of the Year. This is a result of its proven accuracy and enhanced research and development.

Each device is individually calibrated in ISO 17025 traceable standards to ensure the equipment measures accurately to 1%. Each unit is issued with its own calibration certificate indicating approved accuracy ratings.

As a flexible unit, designed to suit multiple application, there are several sensor options available depending on the different pipe dimensions.

Designed to save customers time, money and risk, the award shortlisted Portasonic® 2.FL0 is part of Coltraco’s efforts to strive to provide innovative and personalised solutions to the demands that their customers have to face, so that their customers can be assured of business success and efficiency.

Maintain Sprinkler Systems

Automatic sprinkler systems are used more than any other fixed fire protection system and over 40 million sprinklers are fitted world-wide each year to deal with the threat and risk of fire.

However, there are a number of issues to be considered in regard to maintenance such as corrosion, flow rate and obstructions that may adversely affect the effectiveness of a fire sprinkler system.  Corrosion can cause a sprinkler system to fail due to blockages and failed sprinkler heads. Corrosion can cause leaks, temporary shutdowns, loss of property and personal injury if the sprinklers fail to release. Damaged fire sprinkler systems, due to a lack of maintenance, are a major problem as their effectiveness is compromised. The SFPE state that if sprinkler systems are not periodically inspected for mechanical deficiencies, proper function, valve actuation, water flow, sprinkler clearances, etc., the system may not be effective during a fire.
Therefore, sprinkler systems must be maintained. The Portasonic® 2.FL0 is non-invasive, non-contaminating and cost-effective solution for fire sprinkler flow test.

The Portasonic® 2.FL0 is easy to use and is proven to reduce maintenance time and costs. The flow of a sprinkler system is calculated so that there is always enough to control a fire taking into account the size and construction of the building and the goods stored in it or its use. Accurate sprinkler system flow data, taken during maintenance, provides the chance to make energy saving measures by fine tuning the systems and highlights if there are issues with the system. The Portasonic® 2.FL0 can measure this through self-adapting proprietary signal quality tracking, allowing the advanced instrumentation and technology to automatically optimally adapt to the pipe material and flow profile in both directions. The ability to conduct spot checks on the sprinkler system at mandated intervals ensures the full integrity of a sprinkler system.

Test Fire Hydrants & Pumps

Alongside sprinkler systems, there is a need to measure and record flow rates in fire hydrants and pumps.

In accordance with BS9990:2015 a regulation for fire hydrant and pump testing, the Portasonic® 2.FL0 flow meter is a simple & accurate means to measure and record flow rates in wet fire mains and pumped water pipelines.

For pressure regulating valves, according to BS9990 there is an allowable tolerance for flow and pressure at the landing valve of (750 ±75) L/min at (8 ±0.5) bar. Equally for pumps for wet risers, the pumps have to be capable of delivering 1 500 L/min which is enough to supply each of two fire service hoses with 750 L/min. For water tanks an on-site supply of stored water must be capable of supplying enough water to provide two landing valves with not less than 750 L/min each for at least 45 minutes.

It is essential that wet risers must operational in the event of a fire. The flow is calculated so that there is always enough to control a fire taking into account the size and construction of the building and the goods stored in it or its use. Corrosion and obstructions can cause a wet fire mains and pumped water pipelines to fail due to blockages.

The Portasonic® 2.FL0 allows quick and easy accurate flow rate measurement, to ensure the operation of the fire hydrants and pumps.

For more information on the Portasonic® 2.FL0 ultrasonic flow meter and the other products that we provide here at Coltraco, get in touch today, we can always be on hand to answer any questions or queries that you may have.

Get in touch

You can reach us anytime via phone or email, we aim to respond to all enquiries within 24 hours (excluding weekends and bank holidays)


Come say hello at our Technical Laboratory.

Coltraco Ultrasonics
NETPark Research Institute
Joseph Swan Road
TS21 3FB

United Kingdom


Monday - Friday (excluding bank holidays) from 8:30am to 6:00pm, UK.

Tel (Sales & HQ): +44 20 7629 8475
Tel (Technical): +44 1740 618 240