JUMO digiLine CR HT10, Operating Manual, Page: 48 / 84

9 Calibration
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9.6 Calibration logbook
The calibration logbook is saved in the JUMO digiLine electronics of the sensor. The last 10 successful
calibrations are saved in the calibration logbook. After a connection to the digital sensor has been estab-
lished successfully by the JUMO DSM software, the calibration logbook entries (except the TC-curve and
Ci base calibration) in the digital sensor connected to the PC are read by the JUMO DSM software and
saved on the PC. There is no limit to the number of calibration logbook entries that can be saved on the
PC. Canceled or failed calibrations (calibrations outside the admissible limits) are not saved in the log-
book. Manual changes of calibration values are also documented. The following data are retained in the
logbook:
•
Date and time
• Calibration values determined or entered
• Calibration mode (true calibration/manual entry of calibration values)
• Calibration assessment (assessment of the calibration values determined during the true calibration)
• Sensor replacement counter reading (to assign the calibration logbook entries to the individual sen-
sors in the sensor replacement history of the JUMO digiLine electronics)
The calibration logbook can be viewed on the PC using the JUMO DSM software.
9.7 Evaluation criteria for calibration
Evaluation criteria for calibration of relative cell constant
Calibration
value [unit] Invalid Warning OK Warning Invalid
Relative cell
constant [%] ... < 50 ≤ ... < 75 to 125 < ... ≤ 150 < ...
Evaluation criteria for calibration of temperature coefficient
Calibration
value [unit] Invalid Warning OK Warning Invalid
Temperature
coefficient
[%/K] ... < 0 to 8 < ...