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GAS CONCENTRATION
PERCENT
PPM
12.
Select PERCENT or PPM option. After gas concentration selection, following menu appears to enter the actual span
gas value.
000.00 PPM
PRESS UP OR DOWN
TO CHANGE VALUE
ENTER TO SAVE
MENU TO RETURN
>>>
09.00 PPM
SPAN
CALIBRATION
ENTER TO CALIBRATE
MENU TO ABORT
13.
By using the UP or DOWN arrow keys, enter the appropriate digit where the cursor is blinking
14.
Press the ENTER key to advance the underline cursor right or press the MENU key to advance the underline cursor
left to reach to the desired digit of the alarm value.
15.
Repeat until the complete span value has been entered.
16.
In the example above, a span value of 09.00 PPM has been entered.
17.
After the span value has been entered, the analyzer will prompt to press the ENTER key to accept SPAN
CALIBRATION.
Caution: Allow the span gas to flow until the analyzer reading has stabilized before accepting calibration.
The wait time will vary depending on the amount of oxygen introduced to the sensor when the sample and span gas
lines were switched
18.
After successful calibration, the analyzer will display a message “Passed Calibration” and return to the Sample
mode.
NOTE: The analyzer is allowed to accept calibration when O2 reading is within 50% of the span gas value. If the O2
reading is outside of this limit, by pressing ENTER to accept calibration will result in “Failed Calibration” and return to
the Sample mode without completing Span calibration. After pressing ENTER either of the following two messages will
be displayed.
PASSED
CALIBRATION
OR
FAILED
CALIBRATION
If the calibration is unsuccessful, return to the SAMPLING mode with span gas flowing through the analyzer and retry
calibration before concluding that the analyzer is defective.
Before disconnecting the span gas line and connecting the sample gas line (if the analyzer is not equipped with a
SPAN/SAMPLE vale option), flow the sample gas for 1-2 minutes to purge the air inside the sample line and then
disconnect the span gas line and replace it with the purged sample gas line.
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