Welcome to ONEFLOW

Innovative Ultrasonic flow meters, delivering industry leading performance & useable hard data with an exciting range of hand held and wall mounted flow meters.


Introducing the new ONEFLOW 400 range.

A robust, comprehensive and highly accurate flow meter, which is easy to use in a wide variety of industries and applications. The Flotec 400PF will measure the flow of almost any liquid, with great accuracy.

The ONEFLOW 400PF is a reliable, hand-held flowmeter, designed to measure liquid flows. The non-invasive clamp on rails and sensors are easy to fit, and can be used on most pipes from 13mm and upward. The ONEFLOW 400PF is an ideal solution for all applications with sound conducting liquids, e.g. water, waste water, solvents, hydraulic fluids, acids, fuel oils, food, drink, hydrocarbons and chemicals.

The 400 Series has a high contrast 128 x 64 pixel LED back-lit display, a USB rechargeable lithium polymer battery, low power logging mode for extended periodic data logging.

The performance of our ONEFLOW 400PF can be further enhanced using optional temperature sensors to differentially measure the heat flow in pipes, thereby allowing you to generate energy flow calculations. Additional calibrated sensors and rail mounts, extended life batteries and case options are also available.

Currently used in these industries:

  • Water supply and treatment
  • Facilities management/building services
  • Energy management/audits
  • Chemical, oil, gas and pharmaceuticals
  • Semiconductor manufacturing
  • Marine and shipping
  • Food, drink and leisure industries
Applications include:

  • Energy audits/heat loss
  • HVAC system installations and audits
  • Leak detection
  • Liquid metering
  • Testing and calibration of equipment and installs
  • Hydraulic systems testing
  • Hydraulic systems maintenance

For more information on the ONEFLOW 400 Series of innovative ultrasonic flow meters, including the soon to be released Wall Mounted, ONEFLOW 400WM, or if you wish to book a demonstration, then please get in touch.