Calibrate holding down the SP key; use UP and DOWN arrow keys to adjust. Move one step
up with UP arrow key.
13.3.4 CO
2
sub-menu (only in MAW
®
with a built-in gas mixer)
Press (⇨) on CO
2
to enter the CO
2
sub-menu.
First item in the CO
2
sub-menu is CO
2
sensor calibration:
Calibrate holding down the SP key; use (⇧) or (⇩) to adjust the value.
Move to the next sub-menu item with (⇩) or one step up with (⇧).
Toggle CO
2
regulation ON/OFF by holding the SP key and pressing (⇧) or (⇩).
Move to the next sub-menu item with (⇩) or one step up with (⇧).
CO
2
flow rate is shown, it cannot be adjusted. This is the amount of CO
2
gas put into the
system while regulating. The volume is shown in l/hour. Normally it will fluctuate along with
the CO
2
regulation.
Press (⇩) to move to the next item in the CO
2
sub-menu.
CO
2
internal pressure rate is shown. The value is in bar. It must be between >0.2 and ≤0.8 at
all times. It cannot be adjusted on the incubator and is adjusted on the external gas regulator
Example - how to calibrate CO
2
:
CO
2
gas concentration has to be measured with a suitable and calibrated device. The real
CO
2
concentration has been recorded to be 5.4% on one of the gas sample ports. Both ports
are suitable for this purpose.
Calibration is done by adjusting the CO
2
level according to a measurement taken
from the gas sampling outlet, using a high precision CO
2
measurement device only.
Both sample ports (IN and OUT) should be used during gas measurement!
Calibration values should only be changed based on the measurements taken by
a trained user or technician.
1. Navigate through the menu and find:
2. When the SP key is pressed, the display will show:
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