Advanced Instruments Inc.
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
OUTPUT ZERO
4.
Advance the reverse shade cursor using the ARROW keys to highlight ZERO CALIBRATE.
5.
Press the ENTER key to select the highlighted menu option.
The following displays appear:
0.15 PPM
ZERO
CALIBRTION
ENTER TO CALIBRATE
MENU TO ABORT
6.
Wait until the analyzer reading stabilizes (depending on the history of the sensor, it may take a few minutes to
several hours) and then press the ENTER key to calibrate (or MENU key to abort).
7.
If the offset is less than 50% of the lowest range, by pressing ENTER will pass the calibration and the analyzer will
return to the Sample mode. On the other hand, if the offset is above 50%, pressing ENTER will fail calibration and
the analyzer will return to Sample mode without completing the Zero calibration.
Both the Zero Calibrate and Span Calibrate functions result in the following displays:
PASSED
CALIBRATION
OR
FAILED
CALIBRATION
Default Zero
This feature will eliminate any previous zero calibration adjustment and display the actual signal output of the sensor
at a specified oxygen concentration. For example, assuming a zero gas is introduced, the display above 0.00 PPM will
reflect an actual zero offset. This feature allows the user to ensure that the accumulative zero offset never exceeds
50% of the lowest range limit. To perform Default Zero,
Access the MAIN MENU by pressing the MENU key.
1.
Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
2.
Press the ENTER key to select the highlighted menu option.
The following displays appear:
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