10
3.2.2 TEMP & HUM Calibration
You can calibrate the temperature and humidity by modifying the
"OFF" value.
Formula :
OFF(TEMP target value) = TEMP(target value) - TEMP(current value) + OFF(TEMP current value).
OFF(HUM target value) = HUM(target value) - HUM(current value) + OFF(HUM current value).
Example：
If TEMP target value is 25.0, current value is 23.0, current value of OFF(TEMP) is -0.2.
Then "OFF(TEMP target value)=25.0-23.0+(-0.2)=+1.8".
If HUM target value is 36.0, current value is 33.0, current value of OFF(HUM) is +1.5.
Then "OFF(HUM target value)=36.0-33.0+(+1.5)=+4.5".
Note:
1. Please ensure that you can calibrate under fresh air outdoors.
2. During the calibration process, please do not perform other operations until the
calibration is successful and you return to the previous level screen.
Calibration
Exit
Save
Pleass ensure that the reading is
stable before calibration.
TEMP: 23.0 °C
OFF: -0.2 °C
HUM: 33.0 %rh
OFF: +1.5 %rh
Calibration
Exit
Save
Pleass ensure that the reading is
stable before calibration.
TEMP: 25.0 °C
OFF: +1.8 °C
HUM: 36.0 %rh
OFF: +4.5 %rh
Increase "OFF(TEMP)" to +1.8°C
Increase "OFF(HUM)" to +4.5%rh
Press the AQI or ||/＞ button to set
the current value, press the PM2.5
or HCHO button to switch to the
next item.
Press the AQI or ||/＞ button to set
the current value, press the PM2.5
or HCHO button to switch to the
next item.
Formula :
K(target value) = PM2.5(target value) / PM2.5(current value) * K(current value).
Example：
If PM2.5 target value is 30.0µg/m
3
, current value is 49.2µg/m
3
, current value of
K is 1.00. Then "K(target value) = 30.0/49.2 * 1.00 = 0.61".
3.2.3 PM2.5 Calibration
You can calibrate the PM2.5 value by adjusting the "K" factor.
Calibration
Exit
Save
PM2.5:
PM2.5: 49.2 ug/m
3
K: 1.00
The larger the K value, the greater
the display value.
Calibration
Exit
Save
PM2.5:
PM2.5: 30.0 ug/m
3
K: 0.61
The larger the K value, the greater
the display value.
Decrease "K" to 0.61
Press the AQI or ||/＞ button to set
the current value, press the PM2.5
or HCHO button to switch to the
next item.
Press the AQI or ||/＞ button to set
the current value, press the PM2.5
or HCHO button to switch to the
next item.
Note: For products calibrated according to ISO standard, K coecient is 1 by
default. It is only recommended that professional engineers perform this
adjustment under standard conditions with standard laboratory, or test bin
facilities. At the same time, the calibration environment required for P2.5 is
relatively high, and the calibration results will be aected by factors such as
dust/particle size and dierent configurations of standard warehouse
facilities, etc, so it is strongly recommended that you use this function only
under essential conditions or contact us to better support your special needs.
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