NEW BRUNSWICK SCIENTIFIC BioFlo 110 Manual To Operations page 94

The procedures to set the Control Mode, the Setpoint, and the Graphic Display High and
Low parameters are the same as for the Temperature and Agitation Loops.
1. After autoclaving, wait until the media reaches operating temperature. You can speed
the cooling process by entering the Temperature setpoint, agitating and sparging.
2. In the dO2 Loop Details screen, press the Calibrate selector button. The dO2 Loop
Calibration screen opens:
B
Calibrate dO2 0
i
o
F
l
o
1
1
0
3. Press the Set Zero selector button. A highlighted edit box opens:
B
Calibrate dO2 0
i
o
F
l
o
1
1
0
4. Using the touchpad, key 0 into the highlighted edit box. Do not press Enter yet.
5. Establish a reference "zero" signal from the dissolved oxygen probe, using one of the
following choices:
(a) More accurate: Sparge with nitrogen until the dO2 Raw Input stops
decreasing.
(b) Widely used alternate: Momentarily disconnect the dO2 cable from
the probe.
New Brunswick Scientific
Zero Std: 0.00
Raw Input: 1022
Zero Std: 0.00
Raw Input: 1022
81
Set Zero
Set Span
Reset
Set Zero
Set Span
Reset
User's Guide