Video-Trainings: testo 400 and testo 420

With our testo 400 and its broad range of probes, norm-compliant flow velocity measurement and documentation was already child’s play before.

In combination with our flowhood testo 420, you can now also measure volume flow at large vents.

  • Connect testo 420 with the testo 400
  • Carry out measurement
  • Send measurement report

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