10
sequence, press and hold the ENTER
key at any point of the start-up
sequence, until the meter beeps.
Using the Sensing Probe
The sensing probe relies on the diffusion
of air. For best results, try to keep the
sensing probe surrounded by moving air.
Do not breathe on the probe, since humans
exhale levels well exceeding 10,000 ppm
CO2 and it may take time for the probe to
re-stabilize.
Keypad Functions
When pressing the keys on the front panel,
the Model IAQ50 will beep to confirm the
function. If you press a key and it does not
beep, the instrument does not allow that
function during the selected mode.