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Chapter 5: User Mode and Calibration
OX-04 Operator’s Manual
6. Press and hold
AIR
until the screen prompts you to release it.
7. If the fresh air adjustment passes, the instrument returns to the
AIR
item in the
GAS CAL
menu.
8. If the fresh air adjustment fails, “FAIL AIR” displays. Press and release POWER MODE to
acknowledge the failure. See page 70.
Performing a Span Adjustment in A-CAL
The
A-CAL
item only appears if
E-CAL
in User Mode is set to
OFF
(factory setting). If
E-CAL
is set to
ON
, see page 50 for calibration instructions.
Preparing for Span Adjustment
To adjust the span on the OX-04, you need:
• Calibration gas cylinder
• 0.25 LPM fixed flow regulator
• Non-absorbent tubing
• Calibration cup
1. Confirm that the OX-04’s calibration gas value matches the concentration listed on the
calibration gas cylinder as described on page 53.
Table 10: Calibration Concentration Limits
Channel
Min. Cal.
Concentration
Max. Cal.
Concentration
Oxygen (O
2
)
0.0%
18.0%
AIR
HOLD
AIR
RELEASE
Содержание OX-04
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