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Calibration Oxi 315i
6
Calibration
Separate
calibration of
CellOx 325 and
DurOx 325
The portable instrument Oxi 315i enables the two sensor types, CellOx 325
and DurOx 325, to be calibrated separately from one another. The calibration
of a specific sensor type does not affect the calibration of any other type of
sensor. When connecting a sensor, the calibration data stored for the respec-
tive sensor type are automatically used.
Calibration proce-
dures
The calibration is performed in water vapor-saturated air. Use the air calibra-
tion vessel OxiCal
®
-SL (for CellOx 325) or OxiCal
®
-D (for DurOx 325) for the
calibration.
Sensor evaluation After the calibration, the measuring instrument evaluates the current status
of the sensor against the relative slope. The evaluation appears on the dis-
play. The relative slope has no effect on the measuring accuracy. Low values
indicate that the electrolyte will soon be depleted and the probe will have to
be regenerated.
Display Relative slope
S = 0.8 ... 1.25
S = 0.7 ... 0.8
S = 0.6 ... 0.7
E3
Invalid calibration
S < 0.6 or S > 1.25