Fixed, clamp-on, ultrasonic transit time flow and heat meter

From this one instrument – Measure and monitor volumetric flow rate, mass flow rate, and energy (heat quantity) flow rate  



Fixed, clamp-on, ultrasonic transit time flow meter that is fully non-invasive (no drilling required) for measuring the flow rates of most liquids with gas/solid content less than 10% of volume, with 4 – 20 mA outputs and PT100 thermometer integration

  • Unique Human Machine Interface (HMI) driven menu that emphasizes intuitiveness and user-friendliness
  • Clamp on, fixed, wall-mounted non-invasive ultrasonic transit-time principle to measure flow rates of clean liquids in pipes accurate to +/- 0.5% without requiring any invasive installation
  • Measure and monitor volumetric flow rate, mass flow rate, energy (heat quantity) flow rate all from one instrument
  • Ability to incorporate PT100 thermometer inputs so heat quantity measurement can be monitored alongside flow rate
  • Built-in signal oscilloscope for sensor positioning and diagnostics to achieve maximum accuracy with the measurement while providing visibility of the potential issues
  • All measured values can be totalised giving you the total flow rate that has been measured during a particular measurement session
  • Connection to PC available as standard using both RS232 and built-in USB as well as 4 – 20 mA inputs which is available as an optional plug in


  • Capable of working on pipes DN15 – DN 2500
  • Capable of working on virtually any clean liquids
  • Capable of working on a wide range of pipe materials
  • Accurate to +/- 0.5% under ideal conditions
  • Capable of measuring flow velocities between 0.01 m/s – 25m/s
  • Resolution of 0.25mm/s
  • Repeatability of 0.15% of measured value
  • Sensors rated IP66
  • Sensors temperature range -20°C to +150°C
  • Battery life up to 12 hours continuous use on a standard 9V PP3 battery for easy replacement
  • Large internal database of pipe, fluid and lining materials (19+ for fluids, 23+ for pipe and lining materials)


  • Wall mounted and fixed therefore suitable for conducting measurements in a wide variety of poor conditions as the equipment is affixed firmly to the wall
  • No installation costs such as drilling into pipes, therefore no downtime to the pipe network is present
  • 24/7 flow rate monitoring and alert is available
  • Only one individual is required to operate the instrument
  • As there is no contact with the fluid being measured, there is little concern about pressure as long as the flow velocity is within the operating range of the instrument unlike inline flowmeters which need to be pressure rated to the correct pressure
  • Without contact with the fluid, there are also fewer issues with the flowmeter being damaged by the nature of the fluid it is measuring compared to inline flowmeters

Datalogging & Communications Ready

  • 16 MB datalogger included as standard – all measurement values can be logged
  • Serial Communications RS232 and USB included as standard, can be used for device control (command line interface) and datalogger download via PC
  • 4 – 20 mA, Digital, Modbus, Relay, OPTO, Open Collector Output available as optional plug-in modules

Optional Plug-in Modules

  • PT100 Thermometer Input (for heat metering applications)
  • 4 – 20 mA Current Input
  • 4 – 20 mA Current Output
  • Digital InputModbus RTU
  • Relay Output
  • OPTO Output
  • Open Collector Output

Part of the Level-Flow-Pressure Range

See the other 3 products in this range:

  • Portatank® – handheld ultrasonic tank liquid level indicator
  • Portasonic® 2.FL0 – handheld clamp-on ultrasonic flow meter
  • Portasonic® CALCULATOR – convert flow rate into pressure

Get in touch to solve your flow and heat monitoring now

  • use the enquiry form
  • request the free brochure


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