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Calibration / Adjustment
Manual Entry of Calibration Solution
Manual Entry of Calibration Solution
For calibration with manual entry of the calibration solution’s conductivity, the
sensor is immersed in a calibration solution. Protos determines a conductivity/
calibration temperature value pair. Then, the temperature-corrected conductiv-
ity value of the solution must be entered. To do this, read off the conductivity
for the temperature displayed from the TC table of the calibration solution.
Intermediate temperature values must be interpolated.
Protos automatically calculates the cell factor.
During calibration the module is in HOLD mode.
Current outputs and relay contacts of the module behave as configured (BASE).
NOTICE!
• Use fresh calibration solutions only!
• 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 temperature,
the Protos determines the nominal value for the calibration solution from a
stored table.
• Observe response time of temperature probe!
• For exact determination of the cell factor, 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.
Manual entry of cal
solution
