4
M A N U F A C T U R E D B Y M A X T E C , I N C .
1. Connect the Tygon tubing to the bottom of the
analyzer by threading the barbed adapter onto
the oxygen sensor. (figure 2)
2. Attach the other end of the sample hose to
the sample gas source and initiate flow of the
sample to the unit at a rate of 1-10 liters per
minute (2 liters per minute is recommended).
3. Using the “ON/OFF” key, make sure the unit is in
the power “ON” mode.
4. Allow the oxygen reading to stabilize. This will normally
takeabout30secondsormore.
2.2 Calibrating the MAXO
2
®
+
Oxygen Analyzer
The MAXO
2
®
+
Analyzer should be calibrated upon initial power-up. Thereafter,
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 “ ”willappearonthebottomoftheLCD.Calibrationis
recommended if the user is unsure when the last calibration procedure was
performed, or if the measurement value is in question.
100% O
2
verification, new calibration is required when:
•ThemeasuredO
2
percentagein100%O
2
isbelow99.0%O
2
•ThemeasuredO
2
percentagein100%O
2
isabove101.0%O
2
•TheCALreminderIconisblinkingatthebottomoftheLCD
•IfyouareunsureaboutthedisplayedO
2
percentage. (see Factors
influencing accurate readings.)
Compressed air (20.9% O
2
), new calibration is required when:
•ThemeasuredO
2
percentagein20.9%O
2
isbelow19.9%O
2
•ThemeasuredO
2
percentagein20.9%O
2
isabove21.9%O
2
•TheCALreminderIconisblinkingatthebottomoftheLCD
•IfyouareunsureaboutthedisplayedO
2
percentage.
(see Factors influencing 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.
FIGURE 2
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