ProMinent DULCOTROL DWCa, Руководство по сборке и эксплуатации, Страница: 89 / 140

1.
Continuous display ➨
CAL F-
A1037
-59.16 mV/dec
Slope
1 ppm = 185.0 mV 16:51:18
Single point calibration
11:11:11
11/11/2011
100 %
11/11/2011
Two point calibration
Fig. 52: Calibration menu [Fluoride]
ð
The calibration menu is displayed.
2. Using the arrow keys select the desired menu item. Press the
key
ð
You can now start the selected calibration process.
15.1.3.2 2-point fluoride sensor calibration (CAL)
Correct sensor operation
–
Correct measuring and metering is only pos‐
sible if the sensor is working perfectly
–
Observe the sensor operating instructions
–
The carrying out of a 2-point calibration is
strongly recommended and is to be preferred
to other methods
–
For calibration the sensor must be removed
and refitted in the in-line probe housing. To do
this, observe the operating instructions of your
in-line probe housing
Material required for calibration of fluoride sensors:
n
Two test containers with calibrating solution
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.
Calibration process selection
Calibrating the controller diaLog DACb
89