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    Intuitive climate measurement

    Air velocity measurement with the testo 440

    Air velocity measurement in ducts and at outlets

    Air-conditioning and ventilation systems only truly function efficiently when air or volume flows in ducts and at outlets meet the specifications. With the versatile testo 440 kits, you can now take care of both measuring tasks more conveniently.

    • Intuitive measurement menus
      Clearly structured menus for volume flow in ducts and at outlets, K factor and Pitot tube measurement are programmed into the measuring instrument.

    • Convenient measurement
      Telescopes with easy-to-read scaling make it really convenient to work in ducts.
      They can also optionally be extended up to 2 m.

    • Versatile accessories
      Use the telescope to reach ceiling outlets with ease. The funnels are perfect for plate outlets.
      Use the air flow straightener to measure turbulent flows with precision.

    • Intelligent calibration concept
      Only the probe heads need to be calibrated. You can carry on working with the measuring instrument, handle and another probe.

    Multifunction measuring instruments: online product configurator

    To the product consultant

    Stay in control of any air velocity measurement

    • Measurements in ducts: precision in any cross-section

    • Measurements at outlets: achieve the ideal climate in next to no time

    • Measurement of turbulent air flows: no task is too challenging

    Stay in control of any air velocity measurement

    • Measurements in ducts: precision in any cross-section

    • Measurements at outlets: achieve the ideal climate in next to no time

    • Measurement of turbulent air flows: no task is too challenging

    Stay in control of any air velocity measurement

    • Measurements in ducts: precision in any cross-section

    • Measurements at outlets: achieve the ideal climate in next to no time

    • Measurement of turbulent air flows: no task is too challenging

    Kits for carrying out measurements in ducts and at outlets

    Other kits and versatile accessories for air velocity measurements

    Application videos

    Ventilation duct

    Volume flow measurement in ducts with the testo 440 air velocity & IAQ measuring instrument.

    Use these tips to measure more effectively

    Measurement menus

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    The intuitive measurement menus

    The menus programmed into the instrument guide you efficiently through volume flow measurements in ducts and at outlets, K factor and Pitot tube measurements.

    Probe comparison

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    All probes for the testo 440

    Which probe for which application? Download probe comparison now and find out all about the testo 440 portfolio of probes.

    Laboratories / Cleanrooms

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    The comprehensive testo 440 brochure

    A wealth of product knowledge relating to the testo 440:

    • All probes and accessories

    • Special kits for any application

    • Details on the intuitive measurement menus

    What else do you want to measure?

    Comfort level

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    In laboratories / cleanrooms

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    Overview page testo 440

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