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6.1.1 Procedure for Oxygen Optode 4330 and 4831
Procedure for changing the sensor foil using kit 4733 or 4794:
•
The sensor foil is changed by unscrewing the 4 torx screws in the securing plate, refer Figure 6-2.
Remove the securing plate and the old foil.
o
Rinse clean the sapphire window with DI water
o
If the removed foil will be used in the future it should also be pre-cleaned and rinsed then packed
in a light blocking package marked with the foil type and batch number.
Figure 6-2 Removing the securing plate and change the sensing foil.
•
Center the new foil to fit the optical window. It is important that the standard foil is mounted with the
black side out, and the fast response foil with the non-glossy side out.
•
Remount the securing plate.
•
Figure 6-3 optical signal levels of the fast response foil are quit different from the standard foil. If
changing from a standard foil to a fast response foil our vice versa, the internal amplification should
be optimized to the new foil. This is done by executing the command
6-3). This should be done at room-temperature in air or saturated water. Ensure that the sensor is
connected until the new amplification settings are stored (10-15 seconds)
•
Control and if necessary update the sensing foil coefficients according to the foil certificate, refer
chapter 0.
•
Recalibrate the sensor, refer chapter 6.2.2.
Figure 6-3 Adjust Gain.
TD 269 OPERATING MANUAL
OXYGEN OPTODE 4330, 4831, 4835
June 2017
page 38 of 93
Do AdjustGain
(refer Figure
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