TD 269 OPERATING MANUAL
OXYGEN OPTODE 4330, 4831, 4835
June 2017
page 24 of 93
For each calibration property to be set, you must first
select the property then press
View/Edit
and type the
correct value. Press
Save
to store the settings.
The foil coefficients must be updated when changing the
sensing foil.
Press
Next
> to continue with the next submenu.
Note! Foil coefficients can be entered and new calibrations
can also be performed if connecting the sensor directly to
a computer using a Terminal program, see below for
detailed instructions.
The last submenu in the Oxygen Optode user
maintenance holds settings for:
•
Enable RedReference
; should normally be enabled
(
Yes
). The phase measurements are then performed
with a zero-point set at the red reference (no
fluorescence). The property can be set to
(No)
in
special measurement situations; contact AADI service
department.
•
RedReference Interval
; this is a sample interval divisor
for use of red reference. When the value is set to
1
(default) the red reference measurement is performed
during each sample. The value can be increased to
reduce power drain or to set a fast sampling interval,
less than 2 sec. When the value is set to e.g.
10
, the
red reference measurement is only performed for each
10
th
sample. Avoid setting the RedReference Interval
too long compared to temperature changes in the
sensor, as the RedReference is used to compensate for
temperature drift in the electronics.
Procedure to change the property:
Select the output parameter from the list, press
View/Edit
in the lower part of the window, and change the
setting. Press
Save
to store the setting when completed.
Press
Finish
to complete and exit and store the changes made in the Oxygen Optode User Maintenance.
Selecting Cancel exits without storing your changes.
Figure 3-5 Calibration Coefficients
Figure 3 6 Enable RedReference
