Real life example

Checking indoor air in a meeting room

Universal IAQ instrument testo 400
  • The probe is fixed onto a tripod so that the measurement results are not affected by the CO2 content of the air being breathed.

IAQ measurement in an open-plan office

Universal IAQ instrument testo 400
  • The probe is held as far away from the body as possible so as not to falsify the measurement result.
  • The digital probe enables direct processing of the reading in the probe, which means any possibility of measurement uncertainty is avoided.

PMV/PPD measurement with the IAQ probe

Universal IAQ instrument testo 400
  • PMV/PPD = Predicted Mean Vote/ Predicted Percentage Dissatisfied
  • The instrument should be positioned at around head height for an ideal measurement result.