OX-04 Operator’s Manual
Chapter 5: User Mode and Calibration
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10. The table below describes the 2 calibration outcomes.
Calibration Passed
Calibration Failed
1. The instrument indicates that the
calibration passed.
2. The instrument shows the current
gas reading.
3. If
MAX.SPAN
is set to
ON
(default is
OFF
, see page 93), the
response reading’s maximum
adjustment is displayed. A
maximum span of 24.0% volume
indicates that the reading could
have been adjusted up to 24.0%
volume. If the maximum span
value is close to the calibration gas
value, the sensor should be
replaced soon.
The maximum adjustment is
25.0% volume.
4. Close the regulator.
5. Remove the calibration cup.
6. Press and release POWER MODE
to enter Measuring Mode.
1. The instrument indicates that the
calibration failed.
2. Close the regulator.
3. Unscrew the regulator.
4. Remove the calibration cup.
5. Press and release POWER MODE
to return to the
A-CAL
screen in
the
A-CAL
menu.
6. See “Troubleshooting” on page 70.
PASS
A-CAL
O2
1.5
A-CAL
%
O2
24.0
MAX .SPAN
%
O2
FAIL
A-CAL
%