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12.1.5
Calibrating conductive conductivity, sensor parameter adjustment
Commissioning the controller diaLog DACb
Is there an in-line, batch or circulation process planned?
n
Should the controller operate as a one-way or two-way control?
n
Which control variables are there?
n
What control parameters are necessary?
n
What should the controller do in
n
How should the actuators be controlled?
n
How should the mA-outputs be set?
n
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.
Once you have selected the sensor type, the prompt automatically
appears asking whether the sensor parameters (zero point) have
to be determined. You can initiate this prompt manually as follows:
Continuous display ➨ Menu ➨
[Measuring channel X Conductivity]
or
[Sensor parameter adjustment] ➨
1.
Use the arrow keys to select
[Automatically determine sensor parameters] .
2.
Continue with
.
ð You will see the display showing
[Automatically determine sensor parameters] .
3.
Continue with
.
ð You will see the display with the message
[Sensor parameters are automatically determined] .
The sensor parameters are automatically carried over.
[HOLD] ?
[Measurement] ➨
or
➨
or
.
[Sensor dry] and
➨
65
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