Testo 440 DP Air Velocity & IAQ Meter


  • Integrated differential pressure sensor, for checking filters, for Pitot tube measurements (Pitot tubes can be ordered separately), or K factor measurements
  • Use the large vane probe (Ø 4 inch) to conveniently determine air velocity, volume flow and
  • air temperature at air/ceiling outlets: Measuring range: +0.3 to +35 m/s, -20 to +70 °C
  • Easy storage and evaluation of measurement data
  • Carry out measurements at air/ceiling outlets effortlessly, without using a ladder


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