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    The universal air velocity & IAQ measuring instrument testo 400

    Overview
    Flow
    Comfort level
    In laboratories/cleanrooms
    Online product consultant

    The universal air velocity & IAQ measuring instrument testo 400

    One measuring instrument for all climate-related parameters

    • The right probe to hand for every application: Flexible, mutually compatible Bluetooth and cable probes for measuring all climate-relevant parameters

    • Intelligent calibration concept: Calibration of the probes or probe heads independent of the measuring instrument

    Individual applications

    What would you like to measure? Find out about your individual application area here.

    Flow

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    Comfort level

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    Laboratories/Cleanrooms

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    testo 400 – the multitasker for IAQ professionals

    • Measures all IAQ-related parameters: Flow, temperature, humidity, pressure, illuminance, radiant heat, turbulence, CO2 and CO

    • High-precision, location-independent and integrated differential pressure sensor

    • High-quality digital probes and an intelligent calibration concept

    Smart support

    Stored measurement menus and evaluation of measurement values according to the traffic light principle – for error-free measurements.

    • VAC grid measurement as per EN ISO 12599

    • PMV/PPD in accordance with EN ISO 7730

    • Draught and degree of turbulence in accordance with EN ISO 55

    • WBGT measurement in line with DIN 33403 and EN ISO 7243

    • NET measurement in accordance with DIN 33403

    Determination of volume flow in ducts using grid measurement in accordance with EN 12599

    • For all flow velocity probes (hot wire, vane) and Pitot tubes

    • Input of duct geometry and duct apertures

    • Single-point or timed measurement

    • Automatic display of insertion depths for traversing duct

    • Duct distribution for rectangular ducts according to the trivial method, and for circular ducts according to the centroidal axis method

    • Calculation of measurement uncertainty according to EN 12599

    Work efficiently on site – no workarounds, just on to the next job

    • Manage and save all relevant customer data including measurement locations directly on the instrument

    • Complete and send measuring values with full documentation, including photos, comments and your own logo directly on site – and get to the next job faster

    Customer testimonials for testo 400

    For us as a technical service provider for air conditioning and ventilation systems, testo 400 is our preferred instrument with its versatility and convenient data management functionalities. It's very easy to use and most importantly, provides reliable readings.

    Jean-Marie Leroy

     ·

    France

    We use testo 400 to determine reliable precise results of the indoor climate. Here the measuring programs for PMV/PPD and draught rate are already stored in the instrument. The flexible attachment of various probes is another plus point of the testo 400 for me. If my applications expand in the future, I can simply purchase additional probes. If a probe breaks or needs calibration, I can send it to the service department separately and continue to use the measuring instrument in the meantime.

    Wolfgang Lochner

     ·

    Germany

    The testo 400 IAQ measuring instrument makes you a measurement data billionaire. With its vast memory, we don't have any more headaches about data management and documentation.

    Omar El Masry

     ·

    England

    The wireless probes are designed with touch display and magnetic mounts for easy attaching to ducts. In addition, the high accuracy of the instrument and accessories are crucial for the pharmaceutical customers we support as a service provider for technical facility management.

    Annette Groth

     ·

    Germany

    Product video

    The universal air velocity & IAQ measuring instrument testo 400 with smart touch technology.

    Product details & purchase options

    More information about our universal IAQ measuring instrument

    To the configurator

    Optimal combination of measuring instrument, probe and accessories?

    Use the online configurator now!

    Download

    testo 400 brochure

    All information on the measuring instrument, probes and accessories compactly summarized.

    More information about air velocity & IAQ measuring

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