Minifors 2 - Benchtop Bioreactor
Operation
07 February 2019
Page
147
of
214
Only
Air
: Air is exclusively used, with no addition of a second
gas.
TotalFlow
therefore remains constant and corresponds to
AirFlow
.
Air/O2
: If the setpoint is greater than 21 %, O
2
is additionally
mixed in.
TotalFlow
therefore remains constant, the relation-
ship between
AirFlow
and
Gas2Flow
is adjusted automati-
cally.
Air/N2
: If the setpoint is less than 21 %, N
2
is additionally
mixed in.
TotalFlow
therefore remains constant, the relation-
ship between
AirFlow
and
Gas2Flow
is adjusted automati-
cally.
After selecting the desired option, entry is confirmed using
OK
.
The gas composition
Gasmix
is often used in a cascade for pO
2
control. Cascades for pO
2
control can be configured in the editor
menu of the pO
2
parameters.
10.4.7
Foam
In the standard setting, measures foam formation (
Antifoam
func-
tion) and controls the addition of antifoaming agent from Pump3.
The digital antifoam pump is activated as soon as the antifoam
sensor comes into contact with foam.
Alternatively, the antifoam sensor can be configured as a level sen-
sor so that Pump3 pumps medium until the desired fill level has
been reached again.
Settings
Selection of the foam sensor functions, as well as other possible
settings, takes place in the editor menu of the parameter.
The
FEATURE
menu item has the following three options:
None
: No control, foam
is only measured
