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Advanced Instruments Inc.
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. This feature allows the user to ensure that the accumulative zero offset never
exceeds 10% of the lowest range limit. To perform Default Zero,
Access the MAIN MENU by pressing the MENU key.
Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
Press the ENTER key to select the highlighted menu option.
The following displays appear:
MAIN MENU
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT CALIBRATE
OUTPUT SIMULATE
Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT ZERO.
Press the ENTER key to select the highlighted menu option.
The following display appears and after 3 seconds the system returns to the SAMPLING mode:
FACTORY
DEFAULTS
SET
>>>
0.25
PPM
AUTO SAMPLING
1% RANGE
76 F
Analyzer
Calibration-Span Calibration
Air
Calibration
This procedure requires only a source of clean ambient air and removal of the sensor from its flow housing.
Access the interior of the analyzer by removing the 4 clamps securing the door of the analyzer.
Caution: Do not remove the gaskets from the enclosure. Failure to do so will void the NEMA rating.
Remove the sensor from the screw-in sensor housing or push the air through the analyzer SAMPLE IN thus exposing
the sensor to ambient air or alternatively, flow a certified span gas through the analyzer.
Advance the cursor on the MAIN MENU to CALIBRATE and press ENTER.
Advance the cursor to SPAN CALIBRATION and press ENTER
The following displays appear:
MAIN MENU
SELECT RANGE
CALIBRATION
VIEW HISTORY
SYSTEM OPTIONS
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT CALIBRATE
OUTPUT SIMULATE
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