Chapter 2: Analyzer Description ABL77 Service Manual
Calibration, Continued
Sensitivity
values
• Calibration sensitivity values are calculated based on these two measurements.
• These sensitivity values are compared to the acceptable range.
• If the values are acceptable, the calibration is complete.
• If one or more sensitivity values are outside the acceptable range, the
calibration is automatically repeated. If repeat calibration also results in one or
more parameter sensitivity values outside the acceptable range, the software
will suggest the appropriate next step. Suggestions include investigating the
fluidic pathways of the analyzer, inactivating the sensor, or replacing the
sensor cassette.
Parameter Acceptable Sensitivity Range
pH 40.0 – 61.5
CO
2
30.0 – 61.5
O
2
0.002 – 0.052
Na
+
40.0 – 61.5
K
+
40.0 – 61.5
Ca
2+
20.0 – 31.0
Cl
–
30.0 – 61.5
Hct 10.0 – 25.0
Failed
calibration
status
If the calibration fails, the system will revert to a mandatory four-hour cycle of
two-point calibrations (without repeating) to maintain the fluidic system. A
successful calibration will return the analyzer to the calibration interval entered
into the Calibration Schedule.
2-10 Rev. F
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