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    Intuitive climate measurement

    Comfort level measurement with the testo 440

    Measuring indoor air quality and comfort level

    Measuring the indoor air quality and comfort level in workplaces makes it possible to precisely adjust the indoor climate and reduces the risk of staff shortages due to illness. These special testo 440 kits measure all the relevant parameters: CO2 concentration in the air, degree of turbulence, temperature, humidity and illuminance.

    • Intuitive measurement menus
      Clearly structured menus for degree of turbulence and long-term measurement (with freely selectable measuring intervals) are programmed into the measuring instrument.

    • Wireless comfort
      Numerous probes for comfort and indoor air quality are also available in the wireless Bluetooth version.
      This means less stress for you and saves space in the measuring case.

    • Comprehensive probe selection
      For air velocity, CO2, degree of turbulence, humidity and temperature, lux and CO.

    • 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

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    Your measuring instrument for all comfort level parameters

    Because good ideas only flourish when the conditions are right – use the testo 440 to measure these parameters, to create the best possible feel-good climate:

    • Guarantee a cosier ambience

    • Improve indoor air quality

    • Monitor humidity reliably

    • Control lighting more effectively

    Your measuring instrument for all comfort level parameters

    Because good ideas only flourish when the conditions are right – use the testo 440 to measure these parameters, to create the best possible feel-good climate:

    • Guarantee a cosier ambience

    • Improve indoor air quality

    • Monitor humidity reliably

    • Control lighting more effectively

    Your measuring instrument for all comfort level parameters

    Because good ideas only flourish when the conditions are right – use the testo 440 to measure these parameters, to create the best possible feel-good climate:

    • Guarantee a cosier ambience

    • Improve indoor air quality

    • Monitor humidity reliably

    • Control lighting more effectively

    Your measuring instrument for all comfort level parameters

    Because good ideas only flourish when the conditions are right – use the testo 440 to measure these parameters, to create the best possible feel-good climate:

    • Guarantee a cosier ambience

    • Improve indoor air quality

    • Monitor humidity reliably

    • Control lighting more effectively

    Kits for comfort level measurement

    Application video: Indoor air quality and comfort level

    Measuring indoor air quality and comfort level using the testo 440 air velocity and 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?

    In laboratories/cleanrooms

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    Overview page testo 440

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