Burkert 8285 El. COND Mode D'emploi page 29

Automatic calibration
Calibration / Adjustment
Automatic calibration with standard calibration solution
Automatic with standard cal solution
For automatic calibration, the conductivity sensor is immersed in a standard
calibration solution (NaCl or KCl, selected during parameter setting). From
the measured conductance and temperature, the analyzer automatically
calculates the cell constant. The temperature dependence of the calibration
solution is taken into account.
During calibration the analyzer is in function check mode.
Current outputs and relay contacts behave as configured.
Caution!
• Use only fresh calibration solutions! The calibration solution used must
have been selected during parameter setting.
• Calibration accuracy decisively depends on the exact detection of the cali-
bration solution's temperature. Using the measured or entered temperatu-
re, the analyzer determines the nominal value for the calibration solution
from a stored table.
• Observe the response time of the temperature probe!
• For exact determination of the cell constant, wait until the temperature
probe and calibration solution have the same temperature.
Be sure to observe during calibration:
• If the measured conductance or the measured temperature fluctuate
greatly, the calibration procedure is aborted after 2 min.
• If an error message appears, you have to repeat calibration.
Adjustment: Taking over the values determined by calibration
• When the values determined by calibration are correct, they must be taken
over to adjust the analyzer.
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