Delivery Scope

testo 440-dP air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable and calibration protocol.

Differential pressure measuring instrument - testo 440-dP
Model No: testo 440-dP Part No: 0560 4402

The multifunction measuring instrument testo 440 in combination with high-quality probes help in precise, reliable measurement of all air velocity and IAQ parameters for adjusting air conditioning and ventilation systems, monitoring air quality or carrying out comfort level measurements.

  1. Intuitive: clearly structured measurement menus for the most important applications stored on the instrument
  2. Wireless: Bluetooth probes for greater measuring convenience and a reduced tangle of cables in the case
  3. Space-saving: a universal handle for all probes
  4. Clear overview: parallel display of 3 measuring values; configuration and results at a glance
  5. Reliable: internal memory for up to 7500 measurement protocols, USB interface for data export and optional printout of measuring values


Temperature - NTC
Measuring range -40 to +150 °C
Accuracy ±0.4 °C (-40 to -25.1 °C), ±0.3 °C (-25 to +74.9 °C), ±0.4 °C (+75 to +99.9 °C), ±0.5 % of mv (Remaining Range)
Resolution 0.1 °C
Temperature - TC Type K (NiCr-Ni)
Measuring range -200 to +1370 °C
Accuracy ±(0.3 °C + 0.3 % of mv)
Resolution 0.1 °C
Differential pressure
Measuring range -150 to +150 hPa
Accuracy (±1 digit) ±0.05 hPa, (0 to +1.00 hPa), ±0.2 hPa + 1.5% of m.v., (+1.01 ... +150 hPa)
Resolution 0.01 hPa
General technical data
Weight 250 g
Dimensions 154 x 65 x 32 mm
Operating temperature -20 to +50 °C
Product colour black/orange
Battery type 3 AA mignon 1.5 V
Battery life 12 h (typically vane measurement)
Interface Bluetooth®; USB
Storage temperature -20 to +50 °C
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