Portable Ultrasonic Flow Meter (Doppler) - UFX

The UFX handheld ultrasonic Doppler flow meter is a cost-effective flow measurement system for closed-pipe liquid systems. The unit employs a non-invasive, hand-held transducer, which is placed on the outside of metal or plastic pipes; and battery-powered electronics packaged in a NEMA 4 (IP65)-rated enclosure.

  • Non-invasive, hand-held transducer and battery-powered electronics packaged in a NEMA 4 (IP65) rated enclosure
  • Measures fluid velocities from 0.3…30 FPS (0.1…9 MPS)
  • Reliable readings on nearly all liquid applications containing a minimum of 100 ppm of 100 micron size suspended solids or entrained gases
  • Optional CE approved version for pipes size 1 in. (25 mm) and above
  • Large four-digit LCD display provides velocity readout in user selected units (FPS or MPS)
  • Easy to use fl ow verifi cation instrument for industrial and municipal applications including paper pulp stock, concrete slurries, dredging, primary sludge and waste activated sludge

Portable Ultrasonic Flow Meter (Doppler) - UFX

Technical Support

or call (502) 266-6640.

Technical Details

  • Liquid Requirements: 100 ppm of 100 micron size suspended solids or entrained gases
  • Pipe Sizes: Std. 1" (25 mm) and greater Small pipe 1/4"…1" (6…25 mm)
  • Flow Range: 0.3…30 fps (0.1…9 mps)
  • Accuracy: +/- -2% of full scale
  • Display: Single line – four digit LCD readout of velocity, signal strength, measuring units, and low battery indication
  • Enclosure – Rating Dimensions: NEMA 4(IP65) ABS plastic; 1.5 lbs. (0.7 kg) 4” W x 7.7" H x 1.7" D (101.6 mm x 195.6 mm x 43.2 mm)
  • Transducer Material: Plated body; Ultem® 1000 sensor material
  • Ambient Temperature: –28° F…140° F (–20° C…60° C)
  • Liquid Temperature: –40° F…180° F (–40° C…82° C)
  • Humidity: 0…95% non-condensing
  • Supply Voltage: Battery powered; non-rechargeable alkaline, four AA cells; providing greater than 30 hours of continuous operation
  • Cable: 6.6 feet (2 m) cable and connector
  • Mounting Method: Hand-held with acoustic couplant compound

Operating Principle

The Series UFX utilizes two piezoelectric crystals contained within one transducer to transmit ultrasonic energy into the fluid stream and receive reflected energy off discontinuities, suspended particles or entrained gases, within the moving liquid. When the fluid is fl owing in the pipe (with the discontinuities traveling at the same speed), there will be an apparent shift in frequency from the transmitted sound wave to the received sound wave. The difference between these sound wave frequencies is the Doppler frequency shift and is proportional to fluid velocity. In addition to measuring and displaying fluid velocity, the UFX processor also controls all operations of the instrument from its ultra-efficient battery management circuitry to a proprietary FIR (Finite Impulse Response) filtration program.