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Calibrating the controller diaLog DACb
15.1.8
Calibrating conductive conductivity
15.1.8.1
Calibrating conductive conductivity, sensor parameter adjustment
108
5.
Continue with
.
6.
Then press
to adjust the µS/cm value or press
tinue with calibration.
7.
Carry over the result of the calibration into the controller
memory by pressing
ð The controller shows the continuous display again and
operates with the results of the calibration.
Incorrect calibration
An error message appears if the result of
the calibration lies outside the specified
tolerance limits. In this case, the current
calibration is not carried over.
Check the prerequisites for calibration
and eliminate the error. Then repeat cali‐
bration.
Measuring and control behaviour of the controller
during calibration
During calibration the actuating outputs are deacti‐
vated. Exception: a basic load or a manual control
variable has been set. This remains active. The
measured value output [standard signal output mA]
is frozen, corresponding to its settings in the mA
output menu.
When calibration/testing has been completed suc‐
cessfully, all of the error checks relating to the
measured value are restarted. The controller saves
all the determined data for zero point and slope
upon a successful calibration.
NOTICE!
The sensor must be dry
Do not allow the conductivity sensor to come into
contact with liquid. Only allow the conductivity
sensor to come into contact with liquid once the
conductivity sensor has been connected, config‐
ured and calibrated. The sensor parameters (zero
point) of a moist or wet conductivity sensor can no
longer be properly calibrated.
If the conductivity sensor has come into contact
with liquid prior to calibration, there is an option to
dry the conductivity sensor. A dry conductivity
sensor can be successfully recalibrated to the
sensor parameters.
[Sensor not dry] continues to be displayed despite the conduc‐
If
tivity sensor having been dried, then you will have to wait some
time until the controller has detected the sensor as dry.
.
to con‐
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