711449 (Rev.3) 02/2016
NOTE:
The MiniOX
®
3000 Oxygen Monitor
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keypad functions. If you do not press
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and repeat calibration procedure.
When recalibrating, be sure to select
the calibration value and use the
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to replace the sensor. (See Section 4,
Sensor Replacement)
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you must recalibrate the monitor.
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recalibration, it may be necessary to
replace the sensor. (See Section 4,
Sensor Replacement)
Two-Point Linearity Check
To evaluate sensor performance, conduct a two-point
linearity check on the monitor every week or any time
you suspect that the sensor is not accurately reading
oxygen concentrations. Acceptable range for room air
measurement during a linearity check is:
• 20.8% ±2% (18.8% to 22.8%). This variation
allows for differences in:
• sampling methods
• accuracy of gas concentration
• precision of initial setting
If linearity deviates more than ±2%, the sensor is
nearing end-of-life and should be replaced.
To perform a two-point linearity check:
1. Calibrate in room air.
2. Place the sensor in a stream of oxygen with a
known concentration of 100% until the reading
stabilizes.
3. Recalibrate the monitor.
4. After calibration, measure room air. This
reading should be 20.8% ±2% (18.8% or
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• If the variation is greater than ±2%, repeat
the two-point linearity check.
• If the variation is still greater than ±2%,
replace the sensor. (
See Section 4, Sensor
Replacement
)
Setting the Alarms
The default Alarm Set points are:
• 18% for Low Alarm
(appears in the lower left corner of the display)
• 50% for High Alarm
(appears in the lower right corner of the display)
These alarm points can be reset between 18% -
100%.
NOTE:
The MiniOX
®
3000 Oxygen Monitor
retains current alarm settings when
turned OFF.
To Set the Low Alarm
1. Press once. The following appears on the
display:
• “AL”
• up/down arrows
2. Using the arrow keys, scroll up or down to the
desired Low Alarm set point (18% to 99%).
3. The MiniOX
®
3000 Oxygen Monitor “locks” this
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• beeps once
• automatically proceeds to the Monitoring
Mode
NOTE:
The Low Alarm CANNOT be disabled or
set:
• below 18%
• above 99%
• higher than or equal to the High Alarm
setting.
To Set the High Alarm
1. Press twice. The following appears on the
display:
• “AL”
• up/down arrows
2. Using the arrow keys, scroll up or down to the
desired High Alarm set point (19% to 100%).
3. The MiniOX
®
3000 Oxygen Monitor “locks” this
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• beeps once
MiniOX
®
3000 Oxygen Monitor
Section 3, Operation
3-3
