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Operation
5.6
Low battery indi-
cator
5.7
Auto power off
5.8
0 ppm calibration
20
The low battery indicator appears in the display
when the battery voltage gets low. The measured
values may be more inexact now. In this case you
have to change the batteries.
The meter turns itself off automatically after 15
minutes non-operation. (It will not auto power off
during the calibration).
Calibrate the meter in an area free of CO. To enter
the calibration mode, turn off the meter and press
the power-key and the backlight-key simultaneously
for two seconds. „ppm" will blink in the upper dis-
play and the calibration value „0" at the lower side.
Now the meter is running the 0 ppm calibration as a
default.
Now the meter calibrates automatically. The LCD is
displaying a blinking ppm value and it stops blinking
when the calibration is completed. This takes about
10 minutes.
NOTE!
Do not be alarmed if high ppm or minus value
shows up when entering the calibration mode. It
will go down and approach to 0 in seconds.
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