JUMO 202580, Installation Instructions Manual

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11 Calibration in general
11.3 Calibration logbook
A separate logbook is maintained for each analysis and universal input.
The last 10
successful calibrations of the input concerned are saved in the cal-
ibration logbook. Canceled or failed calibrations (calibrations outside the per-
missible limits) are not saved in the logbook, but rather noted in the event list.
Manual changes of calibration values on the device are also documented. The
following data are recorded in the logbook:
•
Heading with description of the measuring input and calibration method
• Date and time
• Measurand
• Calibration assessment (assessment of the calibration values determined
during the true calibration)
• Calibration values determined or entered
• Reference values used
• Calibration mode (true calibration/manual entry of calibration values)
Since this information does not yet fit in a screen line, the logbook entries are
listed in abbreviated form with the date and calibration results for the time being.
More exact information can be accessed for every entry via the detail view.
Example of a calibration logbook
Calibration assessment symbols
For Ci analysis inputs (inductive conductivity) and universal inputs that have
been configured as a conductivity measuring input, a "TC curve" button is also
displayed. Tapping this button opens a list with the temperature coefficients de-
termined from the last "TC curve calibration".
Calibration values are valid:
Sensor is OK
The calibration values determined are critical.
It is recommended that the sensor be cleaned.
Manual value input