Long press “
Start
” key to activate the logger till “
REC”
LED flashes. If the logger is programmed as start
delay 5 mins, the “
REC”
LED will consistent display and then turn into flashing after 5 minutes.
To stop recording before memory is full, press “
STOP
” key longer time till “
REC
” LED went off. There are
12000 records memory. While memory is full,
FULL
icon will appear on display to remind user.
Connect to computer to read out.
The procedure is same like connecting to setup.
Click “
Data Download
” button on setup screen and choose where to save the logged file to.
The read out csv report can be opened by windows excel.
After setting, click “
Save”
to synchronize the setting and your PC time zone to this datalogger.
Finally, close the setup screen and disconnect logger with computer. Within 30 minutes, Install the
logger to the place where you want to monitor and record the indoor air quality.
The saved report contains:
Configuration Time, Start Time,
Start delay, Sampling rate,
ID no. and Total records number.
Each record contains Date and
time, PM2.5, CO
2
, TA, RH(%)
and health index.
5
CO
2
CALIBRATION
The meter is calibrated at standard 400ppm CO concentration in factory. While you turn on the meter
2
for the first time, simply leave it in fresh air condition for 5 minutes to check if it is within specification. If
it is, no need to do re-calibration.
Nevertheless, you may still do either ABC or manual calibration regularly to maintain good accuracy.
Press
“ SET”
+
“+”
keys at the same time till “
CAL”
and
“
400
” appears. Long pressing
“SET”
key
to start the calibration. During the calibration,
“400”
will flash on display. After 5 minutes, the display
return to normal measuring mode to indicate the calibration is done.
During the calibration procedure, long pressing
“+”
key can quit the calibration function.
CAUTION:
Do not calibrate the meter in the air with unknown CO level. Otherwise, it will be taken as
2
400 ppm and leads to inaccurate measurement. The manual calibration is suggested to be done outdoor
with good ventilation, fresh air and sunny day where CO level is around 400ppm. Do not calibrate in
2
rainy day because high humidity will affect the CO level in air. Do not calibrate in places crowded with
2
people or close to where exist high CO such as ventilating outlets or fireplaces.
2
MAINTENANCE
PM2.5 SENSOR MAINTENANCE
1. If dust adhering inside the sensor, the sensor itself has a function to remove the dust on the fan and
the path by rotating the built-in fan at high speed when used for a long time, but completely removes
all dust are not possible. Please don’t consider to do cleaning of the sensor by any method.
2. Please keep the air OUT opening unblocked. The filter installed
in front of the air IN opening is to filter the big dust. Please
replace filter while necessary.
3. Please avoid condensation inside the sensor. When inside of
the sensor is moisturized, this product does not keep its
proper function.
4. If the sensor is located close to noise source ( such as electric
dust collector, etc), the sensor output may be affected by
emitted noise.
Air OUT
Air IN
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