Table of Contents
Advertisement
11.3
Calibration logbook
Example of a calibration logbook
Calibration assessment symbols
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 retained in the logbook:
•
Heading with description of the measurement 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.
Calibration values are valid:
Sensor is OK
The calibration values determined are critical.
It is recommended that the sensor be cleaned.
Manual value input
For Ci analysis inputs (inductive conductivity) and universal inputs that have
been configured as a conductivity measurement input, a "TC curve" button is
also displayed. Tapping this button opens a list with the temperature coefficients
determined from the last "TC curve calibration".
11 Calibration in general
51
Advertisement
Table of Contents
