• Dynasonics® TFX Ultra

Dynasonics® TFX Ultra

Clamp-on ultrasonic flow and energy meters for liquids


  • Reduced material cost: Clamp-on sensor eliminates the need for in-line flanges, pipe fittings, strainers and filters
  • Reduced installation time: The TFX Ultra® may be installed and fully operational within minutes
  • Reduced maintenance costs: With no moving parts, there is nothing on the TFX Ultra® to wear down – no repair kits or replacement parts are needed
  • No need to shut down the process for installation or maintenance due to clamp-on-sensor design
Water, Chemical/Petrochemical media, Pharmaceutical media, Others, Oil
max. flow:
from 3.18 up to 5260284 l/min
from -40 up to 176 °C
Water & waste water industry, Chemical industry, Pharmaceutical industry, Food & beverage industry, General industry, Oil industry, Aerospace industry, Automotive industry


General information

TFX Ultra® ultrasonic flow and energy meters clamp onto the outside of pipes and do not contact the internal liquid. The technology has inherent advantages over alternate devices including:low-cost installation, no pressure head loss, no moving parts to maintain or replace, no fluid compatibility issue, and a large, bi-directional measuring range that ensures reliable readings even at very low and high flow rates.

TFX Ultra® is available in a variety of configurations that permit the user to select a meter with features suitable to meet particular application requirements.

The TFX Ultra® is available in two versions: a stand-alone flow meter, and an energy flow meter used in conjunction with dual clamp-on RTDs. The energy flow meter measures energy usage in BTU, MBTU, MMBTU, Tons, kJ, kW, MW and is ideal for retrofit, chilled water and other HVAC applications.

Technical data

Liquid types Most clean liquids or liquids with small amounts of suspended solids
Pipe sizes DN 15 up to DN 3000
Accuracy ±1 % of reading resp ±0.003 m/s
Power supply AC: 95 – 264 VAC 47 – 63 Hz @ 17 VA max. resp. 20 – 28 VAC 47 – 63 Hz @ 0,35 A max.
  DC: 10 – 28 VDC @ 5 W max.
Ambient conditions -40 °C up to +85 °C
Velocity range Bi directional 0,03 up to 12 m/s
Display Two line LCD, LED backlit
Sensors TFX Ultra®  
Pipe size DN 15 – DN 3000
Enclosure DTTR = Ultem®
  DTTS = PVC, Ultem®
Pipe surface termperature DTTR = -40 °C up to +120 °C
  DTTC / DTTL = -40 °C up to +90 °C
  DTTN = -40 °C up to +90 °C
  DTTN / DTTL = -40 °C up to +90 °C
  DTTH = -40 °C up to +175 °C
  DTTS = -40 °C up to +60 °C
Sensor frequency DTTS / DTTC = 2 MHz
  DTTR / DTTN / DTTH = 1 MHz
  DTTL = 500 KHz