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Section 9: Troubleshooting
Measurement requires considerable time and the end point isn't detected.
Expected trouble causes
Samples
are
reagents.
Sample troubles
Measurement value is high.
Check a value by direct injection with 5μl water and a microsyringe.
When the measurement value is not within 5000±250μg, an electric circuit can be wrong.
Contact our local distributors for repair. When the value is correct, take the following measures.
Expected trouble causes
Disturbance occurs.
Cell troubles
Measurement value is low.
Check a value by direct injection with 5μl water and a microsyringe.
When the measurement value is not within 5000±250μg, an electric circuit can be wrong.
Contact our local distributors for repair. When the value is correct, take the following measures.
Expected trouble causes
Disturbance occurs.
Background is high at
measurement start.
Potential is unstable.
Expected trouble causes
Cable connector looseness
Detection electrode
Breakage and contamination at
glass border
Stirrer
Stirrer rotation speed is
inappropriate.
Stirrer rotation speed is
unstable.
A motor is wrong.
not
fit
for
Check reagent catalogues.
Refer to Table 4-1. Moisture content examples.
Contact our distributors for unclear points.
Check reagent catalogues.
Wash a titration cell.
Check reagent catalogues.
Background should be as follows at measurement start.
Connect it again.
Replace it with new one.
Adjust the speed.
Change a stirrer bar.
Contact our local distributors for repair.
Countermeasures
Countermeasures
Countermeasures
Direction method: 0.1μg/s or less
Countermeasures
9-6
CA-200
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