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Does not work for clean water applications. Please call 1-800-884-4967 to discuss an appropriate meter for your application.


  • 0.3 to 30.0 FPS (0.10 to 9.00 MPS)
  • 100:1 turndown ratio
  • Liquid with 100 ppm of 100 micron size suspended particles or entrained gases
  • Closed full pipes 1/4" and larger
  • -28 to 140°F (ambient)
    -40 to 180°F (liquid)
  • Optional CE Approved transducer for pipe sizes 1" and larger

The Dynasonics UFX ultrasonic flow meter is a handheld doppler flow meter. The Dynasonics UFX ultrasonic flow meter utilizes advanced ultrasonic technology, providing accurate and reliable flow velocity assessments in closed piping systems of 1/4" (6 mm) and higher.

The Dynasonics UFX ultrasonic flow meter employs a non-invasive, hand-held transducer which is placed on the outside of the pipe. Within seconds, the large 0.7 inch (18 mm) LCD provides stable readings in feet per second or meters per second. The Dynasonics UFX ultrasonic flow meter operates on metal or plastic pipes containing liquids with greater than 100 ppm of 100 micron size suspended solids or entrained gases. The Dynasonics UFX ultrasonic flow meter measures fluid velocities from 0.3 to 30.0 FPS (0.10 to 9.00 MPS) with a 100:1 turndown ratio.

The easy-to-use Dynasonics UFX ultrasonic flow meter provides accurate flow readings on applications such as dredging systems, crude oil, sludges, and waste slurries. Flow verification is provided for many industrial and municipal applications.

Operating Principle

The Dynasonics UFX ultrasonic flow meter utilizes an advanced ultrasonic measuring technique, providing accurate, non-invasive, fluid velocity assessments without opening the pipe. Utilizing two piezoelectric crystals contained within one transducer, the Dynasonics UFX ultrasonic flow meter transmits ultrasonic energy into the fluid stream and receives reflected energy off discontinuities (suspended particles or entrained gases) within the moving liquid. Transformations that result from the energy reflections are processed and converted to fluid velocity by the Dynasonics UFX ultrasonic flow meter's sophisticated software algorithm. The processor also controls all operations of the instrument from its ultra-efficient battery management circuitry to a proprietary FIR (Finite Impulse Response) filtration program.

Dynasonics D002-2007-002 Mounting Strap
30 inch nylon mounting strap for UFX series meters
Dynasonics Acoustic Couplant, Grease
Acoustic Couplant (Grease) for Dynasonics Meters
FS-200 Ultrasonic Thickness Gauge
Hand-held ultrasonic pipe thickness meter with 5 MHz transducer
In Stock


This product can be used in the following applications:

Application Notes

Here's how some of our customers used this product.

Muddy River Water

The Background: Our customer is a farm that has multiple pumps drawing muddy water into his irrigation ditches. They have not wanted to invest in continuous measurement of the flow rates, but they want to check to make sure that the pumps were operating properly as the dirt in the water causes the pumps to wear faster than normal.

The Problem: Since the water is muddy, the metering options are limited. Additionally, the customer wants something easy to use and which does not require costly or time consuming installation.

The Solution: The Dynasonics UFX ultrasonic flow meter is designed specifically for fluids that contain solids or air bubbles and has allowed the farmer to get approximate flow rates of each of their systems to build a baseline of expected flow rate. This in turn has reduced unexpected failures and for the farmer to decide when to it's time to rebuild the pumps in the off season.