EN11
minimum CO
2
/ TVOC reading detected during 7 days of
continuous monitoring.
Make sure the place you put your monitor at is well ventilated (with
a CO
2
level near 400 PPM or TVOC near 0.2 mg/m
3
) for at least an
hour or so everyday, or you move the monitor to such a well
ventilated room for an hour or so everyday to perform Automatic
Baseline Calibration.
Note:
Please try not to place your monitor in an environment with a
TVOC concentration higher than 1mg/m
3
for a long time.
Otherwise, the sensitivity of the TVOC sensor will be reduced
or the TVOC sensor will be damaged.
Manual calibration of the PM2.5/CO
2
/TVOC sensors
It is recommended to undergo manual calibration performed by a
qualified laboratory every 12 months.
This must be done in a well ventilated room or an environment with
clean air (ideally in a room showing lowest value of CO
2
at 400
PPM, TVOC at 0.2mg/m
3
, PM2.5 below 4 ug/m
3
).
Caution
: Do not calibrate the monitor in an environment of
unknown
CO
2
concentration.
•
Power on your air quality monitor it on and wait for 3
minutes until the first PM2.5/CO
2
/TVOC readings are
displayed.
•
Then press and hold the
button, only CO
2
display
flashes. Press the
or the
button repeatedly
to select. PM2.5, CO
2
or TVOC is displayed. Then press
and hold the
button
until “
CAL
” flashes.
