Analytical-industries GPR-3500 MO Portable Oxygen Analyzer Manuel d'utilisateur télécharger pdf (Page 21)

Advanced Instruments Inc.

100.00 %

SPAN

CALIBRATION

ENTER TO CALIBRATE

MENU TO ABORT

23. Press ENTER to initiate the span calibration procedure

24. Allow approximately 60 seconds for the calibration process while the processor determines whether the signal output or reading

has stabilized within 60% of the full scale low range.

25. Both the ZERO CALIBRATE and SPAN CALIBRATE functions result in the following displays:

PASSED

CALIBRATION

FAILED

CALIBRATION

26. If the calibration is successful, the analyzer returns to the SAMPLING mode after 30 seconds.

93.3 %

AUTO SAMPLING

100% RANGE

24.5 C 100 KPA

18. If the calibration is unsuccessful, return to the SAMPLING mode with span gas flowing through the portable oxygen purity

analyzer, make sure the reading stabilizes and repeat the SPAN CALIBRATE procedure before concluding the equipment is

defective.

19. Before disconnecting the span gas line and connecting the sample gas line, restart if necessary the flow of sample gas and allow it

to flow for 1-2 minutes to purge the air inside the line.

20. Disconnect the span gas line and replace it with the purged sample gas line.

21. Wait 10-15 minutes to ensure the reading is stable and proceed to sampling.

Output Span:

Accuracy due to manufacturer tolerances may result in a slight difference between the LCD display and the 0-1V analog output.

However, the difference is less than 0.25% of range and falls well below the specified accuracy of the analyzer. In rare instances the 0-

1V signal output may not agree to the reading displayed by the LCD. This feature enables the user to adjust the 1V signal output

should the LCD display not agree. Note: Adjust the 0V signal output with the OUTPUT ZERO option described above.

1. Access the MAIN MENU by pressing the MENU key.

2. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.

3. Press the ENTER key to select the highlighted menu option.

4. The following displays appear:

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 31 32

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Analytical-industries GPR-3500 MO Portable Oxygen Analyzer Manuel d'utilisateur Page 21