10.8 Calibrating conductive
conductivity
Measuring and control behaviour
of the controller during calibration
During calibration the actuating outputs
are deactivated. 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 com‐
pleted successfully, 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.
10.8.1 Calibrating conductive
conductivity, sensor
parameter adjustment
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 con‐
ductivity sensor has been connected,
configured 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.
Calibration
115
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