Analytical Industries GPR-1900 Series Trace PPB Oxygen Analyzer - Manual (Page 27)

Advanced Instruments Inc.
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MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
CONFIG ALARMS
BYPASS ALARMS
3.3
PPM
AUTO SAMPLING
100 PPM RANGE
24.5 C
LO1 2 PPM 10 PPM HI2
5. Return to the MAIN MENU by pressing the MENU key.
6. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
7. Press the ENTER key to select the highlighted menu option.
8. Repeat to select SPAN CALIBRATE
9. The following displays appear:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
CONFIG ALARMS
BYPASS ALARMS
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
OUTPUT ZERO
10. Assure there are no restrictions in vent line.
11. Regulate the pressure and control the flow rate as described above at 5-30 psig and a 2 SCFH flow rate.
12. Allow the span gas to flow for 1-2 minutes to purge the air trapped in the span gas line.
13. Disconnect the sample gas line and install the purged span gas line.
14. Caution: Allow the span gas to flow and wait until the reading is stable before proceeding with calibration.
The wait time will vary depending on the amount oxygen introduced to the sensor when the gas lines were switched.
15. Press the ENTER key to select the SPAN CALIBRATE option.
16. Note: A span gas concentration above 1000 ppm dictates the selection of the PERCENT option.
17. Advance the reverse shade cursor using the ARROW keys to highlight the desired GAS CONCENTRATION.
18. Press the ENTER key to select the highlighted menu option.
GAS CONCENTRATION
PERCENT
PPM
19. The following displays appear:
000.00 PPM
PRESS UP OR DOWN
TO CHANGE VALUE
ENTER TO SAVE
MENU TO RETURN
>>>
080.00 PPM
SPAN
CALIBRATION
ENTER TO CALIBRATE
MENU TO ABORT
20. 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.
21. Press the ARROW keys to enter the alarm value.