Flow Measurement

Portable Flowmeters

Standard Flow Meter Features

  • Transit Time ultrasonic Propagation technology with Doppler Assist
  • Waterproof System Design
  • Excellent tool for Flow Survey Companies
  • High Signal Strength even in difficult applications
  • Available as a purchase or rental item
  • Complete Flow Survey Package off the shelf
  • Improved Signal to Noise Ratio
  • Volumetric Flow Measurements in Metric or Imperial Units
  • Flow Totalizer

More About the Flow Meter »

Sonalok 7S Stationary Mains Powered Ultrasonic Flow Meter

Standard Flow Meter Features

  • 110/240 VAC or 9/36 VDC
  • Wall Mount Die Cast Aluminium Enclosure (Optional Stainless Steel)
  • Standard Analog and Digital Outputs
  • Options Include
  • Additional Inputs/Outputs
  • Modbus
  • Hart
  • Math Functions (Thermal Energy Program)

More About the Flow Meter »

Portable Flowmeters

EESIFLO ® clamp on ultrasonic flowmeters have been installed in almost every geographical location in the world for more than a decade. We are a successful flow meter manufacturer supplying easy to use, highly accurate flow solutions to clients who wish to determine and report accurate liquid flow rate without having to halt a process or cut through pipes. A high quality clamp on flow meter should be capable of maintaining accuracy in working in conditions where there are temperature fluctuations in the process and the surrounding environment.

The electronics and sensors should be able to measure the flow of clean liquids but also possess the ability to handle some amount of bubbles and solids. In addition, it is important that the manufacturer you purchase from has a successful track record and a long user list of satisfied clients who have benefitted from the devices. EESIFLO meets all the above criteria and more!


Doppler Flow Meter Principle – Animation EESIFLO

The EESIFLO clamp on Doppler meters rely a principal that requires moving reflectors in the liquid. The reflectors can be small or larger amounts of solids or bubbles but not necessarily moving at the same flow rate as the media. Ultrasonic waves are transmitted by the sensor through the pipe wall into the media where they are reflected back off the moving particles and again back up through the pipe wall where they are picked up by an ultrasonic receiver.

Transit Time Principle – EESIFLO Ultrasonic Flow Meter Animation

Transit Time Ultrasonic Flow Meter working principle. Bursts of signals are sent back and forth from sensor A to sensor B. If there is no flow, the time for sensor A-B and B-A is the same but when a velocity is present, it takes more time for the downstream to upstream sensor ultrasonic beam to reach its destination vs the upstream to downstream. This time differential is measured and referred to as the delta-T and corresponds to the uncorrected flow velocity. The pipe dimensional details enable a volumetric calculation while the fluid type information enables Reynolds correction for corrected flow e.g. laminar/transitional/turbulent.

Clamp on Flow Meter for Clean and Dirty Liquids- EESIFLO

Traditionally transit time meters have been recommended for clean applications where bubbles and solids are not present. Users ask questions like “Should I be using Doppler or Transit-Time Flow Meter?” Unless you are sure of the answer, your only solution is to carry a Doppler flowmeter in one hand and a Transit-Time meter in the other, and use both of them when one does not work.

The “Doppler” and “Transit-Time” technology have their advantages and disadvantages but EESIFLO transit time flow meters are capable of working in applications that contain a considerable amount of suspended solids and air bubbles so that it is possible to use a single device for more than 95% of applications.