Advanced Instruments Inc.
100.0
OUTPUT ZERO OFFSET
PRESS UP OR DOWN
TO CHANGE VALUE
ENTER TO SAVE
MENU TO RETURN
6.
The default setting of 100 illustrates no adjustment to the analog output signal. Compute the adjustment value as
described in Appendix B or consult the factory. The true adjustment value must be determined empirically by trial
and error. Adjust the initial value to above 100 to increase the analog signal value or decrease it below 100 to
decrease the analog signal.
095.0
OUTPUT ZERO OFFSET
PRESS UP OR DOWN
TO CHANGE VALUE
ENTER TO SAVE
MENU TO RETURN
7.
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 OUTPUT ZERO OFFSET value.
8.
Press the ARROW keys to enter the OUTPUT ZERO OFFSET value.
9.
Repeat the OUTPUT ZERO OFFSET routine until the output is 0.00V.
10.
Save the adjustment value by pressing the ENTER key or abort by pressing the MENU key. After adjustment, the
system returns to the SAMPLING mode.
Span Calibration Procedure
Air Calibration
This procedure requires only a source of clean ambient air and removal of the sensor from its flow housing.
1.
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 reinstall the gasket will void the NEMA rating.
2.
Remove the sensor from the sensor housing. Hold the sensor pushed inside of the upper sensor housing with your
hand while exposing the sensor to ambient air.
3.
Advance the cursor on the MAIN MENU to SAMPLE and press ENTER to accept the selection.
4.
From the above SAMPLE menu advance the cursor to AUTO RANGING and press ENTER.
5.
Analyzer will return to the MAIN MENU and display the oxygen concentration which should approximate 20.9%
oxygen.
6.
Wait approximately 2 minutes to ensure the reading is stable.
7.
Using the menus below, advance the cursor on the MAIN MENU to SPAN and press ENTER to accept the selection.
Hold the sensor pressed against the
contact pins inside the housing
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