Analytical-industries GPR-2900 Series Oxygen Analyzer Manuel d'utilisateur télécharger pdf (Page 24)

Advanced Instruments Inc.

Output Zero:

In rare instances the 4-20mA signal output may not agree to the reading displayed by the LCD. This feature enables the user to

adjust the 4mA signal output when the LCD displays 00.00. Compute the adjustment value as described in Appendix B or

consult the factory.

Note: Adjust the 20mA signal output with the OUTPUT SPAN option described below. The true adjustment value must be

determined empirically by trial and error. Adjust the initial adjustment value for additional percent errors.

Procedure:

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:

MAIN MENU

AUTO SAMPLE

MANUAL SAMPLE

CALIBRATION

CONFIG ALARMS

BYPASS ALARMS

>>>

CALIBRATION

SPAN CALIBRATE

ZERO CALIBRATE

DEFAULT SPAN

DEFAULT ZERO

OUTPUT SPAN

OUTPUT ZERO

5. Advance the reverse shade cursor using the ARROW keys to highlight OUTPUT ZERO.

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

7. The following display appears

100.0

OUTPUT ZERO OFFSET

PRESS UP OR DOWN

TO CHANGE VALUE

ENTER TO SAVE

MENU TO RETURN

8. Compute the adjustment value as described in Appendix B. Note: The true adjustment value must be determined

empirically by trial and error. Adjust the initial adjustment value for additional percent errors.

090.0

OUTPUT ZERO OFFSET

PRESS UP OR DOWN

TO CHANGE VALUE

ENTER TO SAVE

MENU TO RETURN

9. 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.

10. Press the ARROW keys to enter the OUTPUT ZERO OFFSET value.

11. Repeat steps 9 and 10 until the complete OUTPUT ZERO OFFSET value has been entered.

12. Save the adjustment value by pressing the ENTER key or abort by pressing the MENU key.

13. The system returns to the SAMPLING mode.

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Analytical-industries GPR-2900 Series Oxygen Analyzer Manuel d'utilisateur Page 24

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