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Calibration
12.1
CO
Fig. 27: CO
12.2
Relative Humidity
Calibration
Fig. 28: RH Calibration
58
-Calibration
2
-calibration
2
Press HOLD/▲ or MEM/▼ to enter the CO
bration mode.
400 ppm and the "CAL" icon are blinking.
Press M/AVG to start the calibration.
Wait about 10 minutes until the blinking stops and
the calibration is completed automatically.
To abort the calibration, turn off the meter at any
time.
ATTENTION!
Do not calibrate the meter in the air with unknown
CO
concentration. Otherwise, it will be calibrated
2
as 400 ppm by default. This will lead to inaccurate
measurements.
ATTENTION!
Ensure that the battery voltage is sufficient.
The relative humidity calibration has to be done
with a 33% and a 75% salt solution. The ambient
condition is recommended to be at 25°C and sta-
ble humidity (better to be close to the calibration
value). To abort the calibration, turn off the meter
at any time.
ATTENTION!
Never do the relative humidity calibration without
calibration salt, otherwise the meter will be
harmed. You will find the calibration set in the
chapter accessories.
cali-
2
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