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41
8.2
Ambient CO
Fig. 38: Ambient CO
The option 'Ambient CO' offers a graphical assist-
ed ambient CO test.
The current ambient CO concentration is shown
over the elapsed measurement time. The figure
on the left shows an 'Ambient CO' test over a time
period of 230 seconds and the current CO level is
2 ppm.
The options during the ambient CO test are as
follows:
•
Cancel (left icon): click the left key to exit
without performing an “Ambient CO” test and
return to the main menu.
•
New: Start a new “Ambient CO” test
•
Option “CO=0”: click to zero-out the CO sen-
sor offset reading.
•
To evaluate the test click on "Not OK" or "OK".
The analyzer will enter the data menu where
you can save and/or print the information.
NOTE!
Due to temperature effects and aging of the CO
sensor it is possible that the 0 ppm offset level
changes. Check regularly in clean air that the am-
bient CO level is reading zero. If the reading is not
zero in clean air, click the 'CO=0' key to zero-out
the readings.
