PTFM 6.1 Portable Transit Time Flow Meter

It only takes a few minutes to configure the PTFM 6.1 with your application parameters, install the transducers without interrupting your process, and begin measuring flow. With multiple transducer sets optimized for a wide range of pipe sizes and materials, new and more powerful signal processing hardware, standard factory calibration, and intuitive on-screen diagnostics, the PTFM 6.1 provides maximum confidence in the accuracy and reliability of your measurements.

For clean fluids in full pipes, with typically less than 2% by-volume concentration of solids or bubbles. Also suitable for wastewater or sludge flows with low solids concentration.

Flow Velocity Range: ±0.03 m/s to 12.2 m/s (±0.1 to 40 ft/s)


  •  ±1% of reading or ±0.0046 m/s (+/- 0.015 ft/s), whichever is greater
  • Repeatability & Linearity: ±0.25%

Power Input:

  • Built-in rechargeable lithium polymer battery for up to 15 hours continuous operation
  • External mains to USB-C charger with 100-240V AC, 50-60Hz, 0.6A input; and 5.0V DC, 3A, 15W output

Operating Temp.

(Electronics): -20 °C to +60 °C (-5 °F to +140 °F)