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AMI Codes-II O3
Troubleshooting
58
7.2. Calibration Errors
7.2.1
Process Calibration DIS
Possible error
message
Slope error:
7.3. Verification Errors
Possible error
message
Invalid zero measurement:
Verification error
Possible cause
Corrective Action
Wrong manual measure
-
ment.
Repeat the manual measurement.
Use fresh reagents.
Wrong reagent mixture
Reagents not
completely solved in
water.
Reagents older than 30
days.
Make a correct mixture.
Mix long and intensively.
Possible cause
Corrective Action
Gas bubble in the pho
-
tometer.
Rinse the photometer with sample for
1-2 minutes and repeat the verifica
-
tion.
Possible cause
Corrective Action
Deviation between mea
-
sured value and refer
-
ence value is too high
Clean the verification filters
repeat the verification.
If filter cleaning does not result in a
successful verification, clean and
rinse the photometer according to
Cleaning the Photometer, p. 51
and
repeat the verification.
If the problem perists, call service.