Ultrasonic Doppler Flow Meters

Series DFX Ultrasonic Doppler Flow Meters measure flow of liquids that contain useful sonic reflectors¹ suspended within the liquid. The DFX flow meter operates by transmitting an ultrasonic sound from its transmitting transducer through the pipe wall into the flowing liquid. The sound will be reflected by the the reflectors and recorded by the receiving transducer. The clamp-on style transducer is also available in small pipe and high temperature options. The DFX also offers an insertion probe transducer for pipe systems that do not permit ultrasound penetration.

The Series DFX replaces the 601, 901, and 770 models; using more advanced technology for easier installation and more reliable readings on a wide range of liquid and reflector conditions. Unlike other Doppler technologies, the Series DFX is relatively insensitive to VFDs and other ultrasonic noises.

Downloads:
DFX Specification Data Sheet (3.4MB PDF)
DFX Operations Manual (1.96MB PDF)

Standard Features of the DFX include:

Series UFX Hand-held Flow Meter

Series UFX Doppler Flow Meters provide accurate and reliable flow velocity assessments in closed pipe, liquid systems.  UFX requires that the liquid be either solids-bearing or aerated at a minimum of 100 ppm.  The product utilizes a single, hand-held transducer which is placed on the outside of metal or plastic pipe.  Within seconds after placing the transducer, the large LCD will provide a velocity reading in either FPS (feet per second) or MPS (meters per second).  The UFX comes with a flow calculator/slide chart for conversion of velocity measurements to popular volumetric measurements.

Dynasonics offers a comprehensive line of Doppler flow meters, meeting a variety of specific application requirements.  The Series DUFX, DFX, and D902 are clamp-on, non-invasive flow meters that require a good acoustical path between the outside of the pipe and the liquid inside.  In some instances, such as non-saturated concrete pressure pipe and glass reinforced fiberglass pipe, ultrasonic energy will not readily pass.  For these installations, Dynasonics offers the DP7 Insertion doppler probe (see DFX specification data sheet below).

The Doppler meters on this page are intended for applications where suspended solids or aeration (bubbles) are always present and relatively homogeneous in the liquid, typically 100 ppm of 100 micron size.  If the liquid is at times cleaner or non-aerated, approximately 25 ppm of 30 micron size, we suggest reviewing our D902 Enhanced Doppler Flow Meters, or for clean liquids see our Transit Time Flow Meters.  For additional application information, please see our Ultrasonic Selection Guide.   For operating theory go to Doppler Ultrasonic Flow Meter Operating Theory.

Downloads:
DUFX Specification Data Sheet (160KB PDF)
DUFX Operations Manual (358KB PDF)

Standard Features of the DUFX include: