CO
2
Incubator HERAcell
®
150 Operating Instructions
70
10.
Maintenance
NOTE - IR measuring cell
For devices with infrared (IR) measuring cells,
the CO
2
calibration can only be performed
when the CO
s
concentration has been set to
4.0 % or more. The maximal settable correction
is restricted to the range of the CO
2
nominal
value +/- 1.0 %. Should deviations of more than
1.0 % occur, the problem must be repaired by
the Technical Service only.
10.6
CO
2
calibration procedure
1. Activate the calibration:
Keep the
key depressed for 5 seconds.
All operating panel indicators flash.
2. Display the nominal value:
Press the
key.
The set nominal value of 5 % is displayed.
3. Enter the measured value (destination value):
Press the
+
keys.
or
Press the
+
keys.
Destination value e.g. 5.6 %.
4. Accept the destination value:
Press the
key.
The CO
2
display momentarily shows “CAL”,
Summary of Contents for HERAcell 150
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