Testo 440 16 mm Vane Set for Measurements in Ventilation Ducts - 0563 4401


0563 4401

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The testo 440 combines the benefits of a compact handheld device with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. This
means you have all measuring tasks on air conditioning and ventilation systems reliably under control.

  • Intuitive: clearly structured measurement menu for volume flow and determination of air velocity in ventilation ducts
  • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
  • Reliable: internal data storage and USB port for data export
  • As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

With the testo 440 16 mm vane kit, all IAQ-related parameters in ventilation ducts can be measured and documented. The testo 440 air velocity & IAQ measuring instrument recognizes probes automatically, and its structured measurement menus simplify the adjustment of air conditioning and ventilation systems. Up to 3 probes can be connected simultaneously to the measuring instrument: a Bluetooth® probe, a wired probe and a temperature probe with Type K thermocouple connector.

Kit for carrying out measurements in ventilation ducts: the testo 440 air velocity and IAQ measuring instrument and the vane probe (Ø 16 mm) are safely stowed away in the case. So you can get down to work straight away!


testo 440 - Air velocity and IAQ measuring instrument

testo 440 Brochure
  • Intuitive: clearly structured measurement menus for volume flow, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
  • Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
  • Clear overview: large graphic display with parallel display of 3 readings
  • Safe and reliable: internal data storage and USB port for data export

Vane probe (Ø 16 mm, digital) - wired

  • Intuitive: parallel determination of air velocity, volume flow and humidity
  • Precise: accurate measurement results from +0.6 to +50 m/s
  • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to measure in any cross-section
  • Intelligent calibration concept


Ideal for the following applications:

  • Convenience and maximum flexibility for duct and outlet measurements
  • Long-term monitoring of indoor air quality
  • Turbulence measurement in accordance with EN ISO 7730 / ASHRAE 55
  • Range of probes for cleanrooms and laboratories


In this Testo 440 16 mm Vane Kit, you will receive the following:

  • testo 440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable and calibration protocol (0560 4401)
  • Vane probe (Ø 16 mm) with fixed cable (cable length 1.7 m), including telescope (can be extended to 0.85 m) and calibration protocol (0635 9532)
  • Basic case for testo 440 and 1 probe


Sensor - testo 440
  Temperature - NTC Temperature - TC Type K (NiCr-Ni)
Measuring range -40 to +150 °C -200 to +1370 °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)
±(0.3 °C + 0.3 % of mv)
Resolution 0.1 °C 0.1 °C


Sensor - Vane probe (Ø 16 mm)
  Velocity / Volume flow
Measuring range 0.6 to 50 m/s
Accuracy ±(0.2 m/s + 1 % of mv) (0.6 to 40 m/s)
±(0.2 m/s + 2 % of mv) (40.1 to 50 m/s)
Resolution 0.1 m/s


General technical data
  testo 440 Vane probe (Ø 16 mm)
Data transmission Bluetooth®, USB interface  
Operating temperature -20 to +50 °C -10 to +70 °C
Storage temperature -20 to +50 °C -10 to +70 °C
Probe head diameter   Ø 16 mm
Dimensions 154 x 65 x 32 mm 330 x 16 x 16 mm
Weight 250 g 150 g


Buy with 100% confidence knowing your purchase is backed by the full Manufacturer's Warranty. Please register your product with provided warranty card.


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