CO
2
Incubator BB 150 Operating Instructions
57
10.
Maintenance
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”,
then the corrected actual value (measured destinati-
on value 5.6 %) is displayed.
5. Cancel the calibration process:
Press any key.
The temperature display and the CO
2
display show
the actual values.
