Portable Transit-Time Ultrasonic Flowmeter

Recommended for fluids like water, glycol, oils and chemicals. Use it for calibrations, troubleshooting, flow surveys and as a temporary transmitter to replace inline flowmeters.

The PTFM 1.0 ultrasonic transducers clamp-on the outside of pipes from 2" to 48" (50 to 1200 mm) diameter. The ultrasonic signal works through common pipe materials including carbon steel, stainless steel, ductile iron, cast iron, PVC, PVDF, fiberglass, copper, brass, aluminum and pipes with bonded liners including epoxy, rubber and Teflon. Transducers can be mounted without shutting down flow and there is no obstruction or pressure drop. It measures and totalizes forward and reverse flow.

  • Non-Contacting Clamp-on Ultrasonic Transducers Works on Metal and Plastic Pipes
  • Large Backlit Flow Rate Display and Totalizer
  • Isolated 4-20mA Output
  • Built-in 5-Key Calibrator
  • 300,000 point data logger


Accuracy ±1% of reading or 0.1 ft/sec (0.03 m/sec), whichever is greater
Repeatability ±0.25%
Linearity ±0.25%
Flow Velocity ±0.07 to 39 ft/sec (±0.02 to 12 m/sec)
Pipe Materials carbon steel, stainless steel, PVC, PVDF, fiberglass, galvanized steel, mild steel, ductile iron, glass, copper, brass and pipes with bonded liners including cement, epoxy, rubber and Teflon
Frequency 1.28 MHz
Diameter 2" to 48" (50 mm to 1200 mm)
Cable Length 12 ft (3.4 m) length coaxial cables


Enter the terms you wish to search for.