Your challenges on ventilation systems

Ventilation systems differ in three main points:

  • Type and velocity of flow
  • Location and method of measurement
  • Degree of contamination of the air


Unfortunately, you never know exactly beforehand which conditions a plants holds in store for you. And then it’s important that your measurement technology not only has the right probes, but is also quick,. Easy and uncomplicated to operate. This is the only way accurate results and optimally adjusted plants are possible even on busy days.

Tips and tricks for air flow measurements in ducts

Your solutions: IAQ measuring instrument and smart pros

Air velocity & IAQ measuring instrument

testo 440
  • Intuitive measurement menus, incl. for volume flow
  • Large graphic display
  • Internal data storage and USB port
Flow measurement

Extensive selection of probes

IAQ probes
  • 1 handle for all probe heads
  • Wireless probes for more convenience and less cable chaos
testo 440 probes

Testo Smart Probes

Testo Smart Probes
  • Compact pro measuring instruments for your smartphone
  • For all important parameters
  • Operation/docu via App
Smartphone measuring instruments

Recommended products for measurements on ventilation systems

Kit: testo 440 with hot wire and vane probe

testo 440 flow velocity

Kit: testo 440 with 2 vane probes

testo 440 flow velocity kit

These might also interest you

Measurement at large vents

Measurement of turbulent vent flows

Then IAQ pro for IAQ pros: The universal air velocity & IAQ measuring instrument testo 400

testo 400 universal IAQ instrument

Kit: testo 400 with hot wire probe

Kit: testo 400 with vane probe

Measurement solutions for facility management and cleanrooms

Facility management


How to contact us.

Do you have any questions?
We would be more than happy to help you.