The right solution for every flow velocity measurement.

Flow velocity measuring instruments from Testo: For the ideal balance of energy-efficient ventilation systems and optimal indoor climate.

As an air conditioning and ventilation professional, you know how critical precise measurements are: This is the only way to achieve the perfect balance between energy-efficient ventilation systems and a pleasant indoor climate.
Accordingly, the right measurement technology is indispensable for all flows in the duct, at the outlet and in balanced residential ventilation.

Easy to use, with a wide range of practical functions and robust enough for daily use, everything is always in the flow with flow velocity measuring instruments from Testo.

First choice: Air velocity & IAQ measuring instrument testo 440

Combines versatility with maximum ease of use

  • A measuring instrument for all climate-related parameters
  • Clearly structured measurement menus (e.g. volume flow)
  • Perfect for fast and intuitive measurements
  • Wireless measurement with Bluetooth® probes
  • Extendible with a wide range of probes

testo 440 kits – for measurements in ducts and at outlets

  • testo 440 air flow set 2 testo 440 Air Flow ComboKit 2 with Bluetooth®

    testo 440 - 風速プローブセット 2

    型番 0563 4407

    税込  ¥203,500
    • 中高速域の風速測定に適するベーン式のプローブ2種類のセット。天井からのダウンフローやディスク型ベンチレーター、ダクト内の風速・風量測定などに最適
    • 風速、風量、温度を同時測定

Measurementat the outlet

Measurement in ducts

testo Smart App


One App for everything.

Configure, save, document measurements and much more.



Everything in flow.

All product suggestions for flow velocity measurement can be found in this brochure.