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Chapter 8: Troubleshooting
5.
When the calibration is complete, a summary screen will display:
6.
Press the Print button to print the results. Press the Apply button to applies the calibration results or
press the Cancel button to exit without changing the sample conductivity cell values.
Sample Cell Zero
If for any reason the sample conductivity cell has been replaced, or you suspect poor performance of the cell,
you may need to perform a sample conductivity cell conductivity autozero. If you have also performed a sample
conductivity cell calibration, be sure to wait 5 hours after the calibration before performing the sample cell zero.
1.
Make sure the Analyzer is not taking measurements.
2.
Press the Menu button and select the Maintenance tab.
3.
Press the Cal/Ver/Validate button.
4.
Press the Sample Cell Zero button.
5.
Follow the prompts on the screen.
TOC Autozero
The TOC Autozero corrects for minor differences in the response of the two CO
help when the Analyzer is reading very high or negative values. If you have recently run a system protocol, let
the Analyzer run in On-Line mode for 30 minutes before performing a TOC Autozero.
The TOC Autozero requires that the on-line water supply be available to the Analyzer. Make sure the sample inlet
is configured properly before continuing.
1.
If the Analyzer is taking measurements, press the Stop Analysis button.
2.
Press the Menu button, select the Maintenance tab and press the Cal/Ver/Validate button.
3.
Press Run TOC Autozero.
GE Analytical Instruments ©2010
Figure 43: The Sample Cell Calibration Results Screen
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sensors. This adjustment may
2
DLM 74001-04 Rev. A
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