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Volume flow measurement with the testo 400

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.

  • Interactively guided measurement menus
    The testo 400 helps you to work in compliance with DIN EN 12599 or ASHRAE 111. 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 to 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.

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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

  • NEW: measure even at large outlets using the testo volume flow hood.

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

  • NEW: measure even at large outlets using the testo volume flow hood.

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

  • NEW: measure even at large outlets using the testo volume flow hood.

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

Application videos

Volume flow measurement in ducts and at outlets

More probes and accessories

Fully exploit the potential of the testo 400.

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Valuable measuring facts about testo 400

Measurement menus

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Overview of the measurement menus

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

testo 400 brochure

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

Quick Guide

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Quick Guide testo 400 and testo 420

Measure at large outlets using the testo 400 and testo 420.

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