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.
Used calibration solution
Dispose of the used calibration solution. For more
information: see calibration solution safety data
sheet.
One test container with calibration solution are required for calibra‐
tion.
1.
Press the key in the continuous display.
2.
Using the arrow keys select
[Single point calibration]
3.
Then press
CAL F-
Immerse sensor in buffer
Single point calibration
A1042
Sensor value
2.50 ppm
Sensor voltage
161.4 mV
Start with <CAL>
Fig. 56: Fluoride sensor calibration (CAL)
4.
Immerse the sensor in test container 1 with calibration solu‐
tion. When doing so gently move the sensor
5.
Then press
ð
[Calib. in progress] .
Calibrating the controller diaLog DACb
92
Summary of Contents for DULCOTROL DWCa
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