Analytical Industries GPR-1600 MS Series PPB Oxygen Analyzer - Manual (Page 31)

Advanced Instruments Inc.
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CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
OUTPUT ZERO
11. Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT SPAN.
12. Press the ENTER key to select the highlighted menu option.
13. The following display (below left) appears and after 3 seconds the system returns to the SAMPLING mode:
FACTORY
DEFAULTS
SET
3.3
PPM
AUTO SAMPLING
10 PPM RANGE
24.5 C
LO1 2 PPM 10 PPM HI2
14. Repeat steps 1 through 4 above.
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
OUTPUT ZERO
15. Advance the reverse shade cursor using the ARROW keys to highlight ZERO CALIBRATE.
16. Press the ENTER key to select the highlighted menu option.
17. The following displays appear:
0.000 PPM
ZERO
CALIBRATION
ENTER TO CALIBRATE
MENU TO ABORT
18. Press the ENTER key to calibrate or MENU key to abort and return to SAMPLING mode.
19. Allow approximately 60 seconds for the calibration process while the processor determines whether the signal output or
reading has stabilized within 50% of the full scale low range.
20. Both the Zero Calibrate and Span Calibrate functions result in the following displays:
PASSED
CALIBRATION OR
FAILED
CALIBRATION