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Instrumentation for indoor air quality and comfort levels

For an optimal indoor climate.

Regular measurements of indoor air quality and comfort at workplaces allow for precise adjustment of the room climate.

Testo measuring devices help you ensure a comfortable climate in all rooms.

Reliable indoor air quality and thermal comfort measurement

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Additional factors for an optimal indoor climate

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Flow measurement under control - in ducts or at outlets

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Measuring comfort and indoor air quality in accordance with standards

The universal air velocity & IAQ measuring instrument testo 400

With the testo 400 Multifunction IAQ Meter, you can check all parameters of indoor air quality and comfort according to current guidelines and standards: Objective statement on thermal comfort thanks to PMV/PPD measurement according to DIN EN ISO 7730

  • Objective statement on thermal comfort thanks to PMV/PPD measurement according to DIN EN ISO 7730

  • Standard-compliant determination of turbulence, drafts, and indoor air quality according to DIN EN ISO 7730

  • Determination of comfort levels at hot work stations WBGT measurement

Overview of our products

Multifunction IAQ Meters

Compact

testo 440

testo 440 Multifunction IAQ Meter

Versatility in a Compact Design

Professional

testo 400

testo 400 Multifunction IAQ Meter

One measuring instrument for all climate-related parameters

Applications

Measurements of indoor air quality

The carbon dioxide concentration and the indoor air quality in interiors are deemed to be the most important indicators that the quality of the indoor air is good enough.

  • Evaluate indoor air quality through CO2- and other measurements

  • CO2 concentration should not exceed 1000 ppm

Testo offers you numerous measuring devices, which are particularly suitable for measuring these parameters.

Practical guide

Indoor air quality and Comfort at work

Download the exclusive practical guide for free now.

Go to download

What does indoor air quality mean?

Monitoring indoor air quality in practice

What is thermal comfort?

Reasons for using measurement technology

Remedial procedures in the event of a complaint

And much more...

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testo Smart App

One app for all measurements

The testo Smart app guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.

New Features:

PRO measuring programs to increase the efficiency of your applications

>> Adjustments to the ventilation system

>> Multi-measuring point measurement

More Info

Multifunctional

Compatible with all Bluetooth-enabled Testo measuring devices.

Efficient

Reports can be sent directly via email.

Fast

All measured values at a glance.

Simple

Intuitive menus

Clever

Free to download, free to use (Base App)

NEW

PRO Measurement Programs (subscription required)

Our services

Contact

Do you have any questions or would you like a personal consultation?
We would be more than happy to help you.

Customer services

In case of malfunctions, send in your meter with a short description of the error. Please also include your telephone number for any queries. Normally you will receive a quotation for repairs within 3 days

Calibration

Our subsidiary Testo Industrial Services supports you every day in ensuring quality while always complying with the relevant standards and guidelines. You get all the services you need for this from a single source.