Clamp on Flow Meter

Clamp on Flow Meter

Clamp-on Flow Meter - Hire from £50 per day


Non-Invasive Measurement of Liquid Flow


Bringing simplicity to the non-invasive measurement of liquid flow.  Offering the user quick and accurate flow measurement with its easy to follow menu and simple set up.  Results can be achieved within minutes of opening the case!


Compact, rugged and reliable, the Portaflow range has been designed to provide sustained performance in industrial environments.


How it works:

This transit time ultrasonic flow meter is designed to work with clamp-on

transducers, providing accurate measurement of liquid flowing within a closed pipe, without the need for any mechanical parts to be inserted through the pipe wall or to protrude into the flow system.  It takes just a few minutes to install and there is no need to shut down flow or drain the system!


When ultrasound is transmitted between the transducers, the speed at which the sound travels through the liquid is accelerated slightly by the velocity of the liquid through the pipe.  When ultrasound is transmitted in the opposite direction, the flow of the liquid causes the transmitted sound to decelerate.  The subsequent time difference is directly proportional to the flow velocity in the pipe.  Having measure the flow velocity and knowing th pipe cross-sectional area, the volumetric flow can be easily calculated.



Water, Building Services, Energy Management, Power Generation, Chemical,

Pharmaceutical, Petrochemical, Food


Recommended for:

Potable Water, River Water, Cooling Water,  Demineralised Water, Water / Glycol

Solutions, Hydraulic Oil, Diesel and Fuel Oils, Chemicals, Petroleum Products



•  Carry Case:  IP67 rated

•  ‘A’  Transducers:  13 mm OD to 115 mm OD pipes

•  ‘B’ Transducers:  50 mm OD to 2000 mm OD pipes

•  Optional Transducers:   ‘D’  for pipes > 1500 mm up to 5000 mm

•  Transducer Operating Temperature:   ‘A’ & ‘B’ -20°C to +135°C. 

    ‘D’ -20°C to +80°C, ‘A’ & ‘B’ Optional Hi-Temp -20°C to +200°C

•  Outputs:  Opto Isolated 0/4 -20mA: RS 232/USB; 5 pulse @ 1 pulse/sec  


•  Data Logging:  98,000 data points.  Up to 20 named recording blocks. 

    Data displayed logically in text or graph format.  Real time or stored. 

    Can be downloaded via RS232 or USB port to Windows based PC

•  Bluetooth Printer: Optional



Applications & Uses

            •  HVAC and energy system audits

            •  Check system meters

            •  Pump verification

            •  Boiler testing

            •  Leak detection

            •  Filter sizing

            •  Ultrapure water measurement

            •  Heavy fuel oil metering

            •  Condensate measurement

            •  Balancing systems

            •  Clean in place evaluation

            •  Fire system testing

            •  Hydraulic system testing