Automatic Baseline Calibration; Manual Calibration - Wohler CDL 210 Bedienungsanleitung

7.1 Automatic Base-
line Calibration
7.2 Manual Calibra-
tion
Fig. 21: Display during the CO
tion
The automatic baseline calibration (ABC) elimi-
nates the zero drift of the infrared sensor. The
ABC function is always ON when turning on the
meter.
ABC is to calibrate the meter at the minimum CO
reading detected during 7.5 days continuous
monitoring (power on). It is supposed that in the
ventilating area there is fresh air with CO
around 400 ppm during a period of time.
WARNING!
For the described reasons, the automatic baseline
calibration cannot be done in close area with
higher CO
shut.
The manual calibration is suggested to be done
outdoor, e.g. on an exterior window ledge, on a
sunny day where CO
Do not calibrate on rainy days, because the high
humidity will affect the CO
Do not calibrate the meter in places crowded with
people or close to where exist high CO
tration such as ventilating outlets or fireplaces.

Turn on the meter and hold down SET,
LOG/▲ and MIN/MAX▼ simultaneously and
more than 1 second to enter CO
mode, Fig. 21.
400 ppm and CO
performing calibration, Fig. 21. Wait about 30
minutes until the blinking stops and the calibration
calibra-
2
is completed automatically. The meter will return
to normal mode now.
To abort the calibration, press ESC for more than
1 second.
level such as places with windows
2
level is around 400 ppm.
2
NOTE!
are blinking on the LCD while
2
CO2-Calibration
level
2
level in air.
2
concen-
2
calibration
2
EN
2
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