17
7.3 Preset Calibration
7 PROGRAMMING…
Oxygen Calibration Sequence
Cell Zero mV
The upper display shows the millivolt offset of the oxygen probe from the last
successful calibration.
Span % of Theory
A value between 90 and 110% should be displayed. If the value is outside these
limits then the oxygen probe must be checked.
Calibration User Code
[00000 to 19999]
If an incorrect value is entered, access to the calibration sequence is inhibited
and the display returns to the beginning of the Oxygen Calibration Sequence.
Preset Calibration
Select the preset calibration sequence.
Adjust Cell Zero
[0 to ±10mV]
The upper display shows the cell output (in mV) corresponding to a reading of
20.95 %O
2
. Adjust the reading to correspond with the probe.
Span Theory
Select YES if the
Span % of Theory parameter is to be reset to 100%. Select NO
to retain the existing value.
Press to return to the beginning of the Oxygen Calibration Sequence.
Press to advance to the Access to Secure Parameters Page.
Preset Cal.
Adjust Cell Zero
-----
Span Theory NO
One Point Cal.
-----
Two Point Cal.
0.0
0000.0
Cal. User Code
-----
OXYGEN CAL. SEQ.
0.0
Cell Zero mV
100.0
Span % of Theory
YES
SECURITY CODE
Incorrect Calibration User Code
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