Standard-compliant volume flow measurement

With the universal IAQ instrument, you can measure volume flows in ducts and at outlets efficiently, intuitively, and in compliance with standards.

  • Interactive guided measurement menus
    The testo 400 helps you to work in compliance with DIN EN 12599. It guides you step by step through the measurement, reliably preventing any incorrect measurements from being made.
  • Convenient measurement
    Telescopes with easy-to-read scaling make it really convenient for work in ducts. 
  • Efficient data management
    Customer and measuring point information can be transferred from software allowing complex series of measurements to be conveniently analysed on a PC down to the very last detail.
  • Intelligent calibration concept
    The adjustment function allows you to store the calibration deviations determined during calibration at up to six measuring points in the digital probe. This gives you a zero-error display.

Professional, standard-compliant, and convenient determination of the volume flow

  • In the duct by means of grid measurement in accordance with EN ISO 12599 and ASHRAE 111
  • At the outlet with the extendible telescope (2 m)
  • For turbulent flows with the right flow straightener

 

 

Kits and probes for carrying out measurements in ducts and at outlets

testo 400 Air flow kit with hot wire probe

testo 400 air flow kit with hot wire probe
To the kit
  • testo 400 with case
  • Hot wire probe with Bluetooth, including temperature and humidity sensor
  • Vane probe head (Ø 100 mm), including temperature sensor
  • High-precision humidity/temperature probe head
  • 90° angle for connecting vane probes (Ø 100 mm)

testo 400 Air flow kit with 16 mm vane probe

testo 400 air flow kit with 16 mm vane probe
To the kit
  • testo 400 with case
  • Vane probe (Ø 16 mm) with Bluetooth, including temperature sensor
  • Vane probe head (Ø 100 mm), including temperature sensor
  • High-precision humidity/temperature probe head
  • 90° angle for connecting vane probes (Ø 100 mm)

High-precision vane probe

Vane probe testo 400
To the probe
  • Ø 100 mm
  • Incl. temperature sensor
  • With Bluetooth or fixed cable
  • Measurement ranges: 0.1 to 15 m/s -20 to +70 °C
  • Accuracy: 0.01 m/s / 0.1 °C




More probes and accessories

testo 400 probes and accessories
More
Fully exploit the potential of the testo 400.

Valuable measuring facts about testo 400

Overview of the measurement menus

Which stored measurement menus in the testo 400 can assist you with volume flow measurements?

Guide: Measurements in ducts

How to take proper air flow measurements in ducts in compliance with DIN EN 12599.

testo 400 brochure

Everything you need to know about the testo 400 universal IAQ instrument in one concise brochure.

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