A13914AF
12-5
Troubleshooting Calibration and Result Errors
MC Calibration
12
Sample Deviation
Each sample ADC is actually an average of eight readings. The ADC
difference between the minimum and maximum readings must be less
than the predefined limits a noise flag will occur. This does not apply to CO
2
.
Reference
The average of the eight ADC readings corresponding to the measurement
of the Electrolyte Reference Solution.
For CO
2
, the reference ADC represents the rate of pH change initiated by
the reference reagent.
Reference Deviation
Each reference ADC is actually an average of eight readings. The ADC
difference between the minimum and maximum readings must be less
than the predefined limits, otherwise a noise flag will occur.
Span
The difference between the average of the Sample-Reference values
reported for each calibrator level. The value is compared to an expected
value and if the calculated span is less than the expected span, the
calibration is flagged.
Set Point
The concentration value assigned to the calibrator level.
Set Point Units
The units assigned to the set point value.
Replicates Used
The field indicating which replicate of a calibrator level is used for a
particular chemistry.
Failed Calibration Log (ERR)
The fields listed below categorize information about a failed calibration.
Multiple errors are shown here for any chemistry failure. The errors should
correlate with any of the asterisked (*) fields listed within the calibration
report. This section of the report appears only when a calibration fails.
• Reagent
– Identifies the failed chemistry.
• Level
– Identifies the calibrator level which failed.
• Condition
– In the event that an error occurs, an asterisk (*) appears
next to the value which is out of specification. The corresponding error
flag will print in this field. Only those errors that FAIL the calibration will
print.
Table 12.4
ISE Module Calibration Report Field Definitions
(Continued)
Field
Description
Содержание UniCel DxC 600
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