Calibrating The Maxo 2 + Oxygen Analyzer; In-Line Calibration (Flow Diverter - Tee Adaptor) - Maxtec MAXO2+ A Operating Manual & Instructions For Use

2.2 Calibrating the MAXO
NOTE: We recommend use of medical grade USP or >99% purity oxygen when
calibrating the MAXO
The MAXO + Analyzer should be calibrated upon initial power-up. Thereafter,
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Maxtec recommends calibration on a weekly basis. To serve as a reminder, a
one week timer is started with each new calibration. At the end of one week
a reminder icon "
recommended if the user is unsure when the last calibration procedure was
performed, or if the measurement value is in question. Start calibration by
pressing the
detect if you are calibrating with 100% oxygen or 20.9% oxygen (Normal air).
DO NOT attempt to calibrate to any other concentration.
For hospital and home care a new calibration is required when:
» The measured O
» The measured O
» The CAL reminder Icon is blinking at the bottom of the LCD.
» If you are unsure about the displayed O
accurate readings.)
For ID testing, (or optimum accuracy) a new calibration is required when:
» The measured O
» The measured O
» The CAL reminder Icon is blinking at the bottom of the LCD.
» If you are unsure about the displayed O
accurate readings.)
A simple calibration may be made with the sensor open to static ambient air.
For optimum accuracy Maxtec recommends that the Sensor be placed in a
closed loop circuit where gas flow is moving across the sensor in a controlled
manner. Calibrate with the same type of circuit and flow that you will use in
taking your readings.
2.2.1 In Line Calibration (Flow Diverter – Tee Adapter)
1. Attach the diverter to the MAXO
2. Insert the MAXO
3. Attach an open-ended reservoir to the end of the tee adapter. Then start the
calibration flow of oxygen at two liters per minute.
» Six to 10 inches of corrugated tubing works well as a reservoir. A calibration oxygen
flow to the MAXO
of obtaining a "false" calibration value.
4. Allow the oxygen to saturate the sensor. Although a stable value is usually
observed within 30 seconds, allow at least two minutes to ensure that the
sensor is completely saturated with the calibration gas.
5. If the MAXO
"ON" button.
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+ Oxygen Analyzer
2
+.
2
" will appear on the bottom of the LCD. Calibration is
CAL
key for more than 3 seconds. The MAXO
percentage in 100% O
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percentage in 100% O
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percentage in 100% O
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percentage in 100% O
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+ in the center position of the tee adapter (FIGURE 2, A).
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+ of two liters per minute is recommended to minimize the possibility
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+ is not already turned on, do so now by pressing the analyzer
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866.4.Maxtec
is below 97.0% O
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is above 103.0% O
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percentage. (See Factors influencing
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is below 99.0% O
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is above 101.0% O
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percentage. (See Factors influencing
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+ by threading it on to the bottom of the sensor.
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+ will automatically
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2.
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