Table of Contents
Advertisement
Buffer 1
1. Fill buffer solution 1 from the supply bottle into a clean vessel.
2. Remove the electrode from the measuring cell, and immerse
in the buffer solution.
3. Press [OK] to read in the temperature of the sample water and
the measured signal.
4. Discard buffer solution 1.
– Do not return the used buffer solution to the supply bottle!
5. Flush electrode with water.
6. Press [OK] to jump to the menu "buffer value 2".
Buffer 2
1. Select buffer value 2.
2. Fill buffer solution 2 into a clean vessel.
3. Immerse the electrode.
4. The measured signal is read in and compared with the buffer
values.
– The calibration result (sensor slope and asymmetry
potential) is displayed.
CALDATA pH
slope
- 60.17 mV/pH
asym.pot
19 mV
5. Discard buffer solution 2.
6. Flush the electrode with water, and return to the measuring
cell.
7. Go back to the menu "calibration" with [ESC].
Then calibrate the chlorine value.
Calibrating the chlorine value
•
DIP: Push the button underneath the left-hand display.
•
Conex DIA and DIP: Select the calibration function with the
[CAL] button. The LED illuminates.
1. Press [OK] to select the menu "calibration".
2. Select "chlorine", and confirm with [OK].
3. Select "cal. meas. value".
chlorine
cal. meas. value
cal. result
cal. cycle
4. Enter the reference value.
– The measured signal is read in automatically and compared
with the reference value.
– The calibration result (sensor slope) is displayed.
CALDATA chlorine
slope
34.67 µA/ppm
Reading calibration data in the diagnostics menu "service"
Select "service" in the "main menu" with [UP]/[DOWN], and
•
press [OK] (DIP: on both displays).
– The data of the last 10 calibrations can be read.
10.8.3 Calibrating the parameters chlorine, chlorine dioxide
or ozone with Conex DIS-D
1. Press the [CAL] button to select the calibration menu.
– The CAL LED next to the [CAL] button illuminates.
– The display shows the current measured value.
– To prevent overdosing, the controllers must be switched off,
and the device controlled must be closed.
2. Use [UP]/[DOWN] to select the reference value.
3. Start the calibration with [OK].
– The sensor data are then read in.
– The slope (sensitivity) of the sensor is calculated.
– The calibration result is displayed immediately after
calibration.
– The sensor slope is displayed in µA/ppm.
Calibration result
•
The result of the current (last) calibration can be displayed in
the code menu at any time:
– Code 51: display of calibrated slope in µA/ppm.
Error message when reading in the current signal of the
sensor system
•
The alarm LED flashes.
•
The display shows code *13* (slope error).
The alarm is triggered, if the plausibility check results in an
upward or a downward violation of the following slope ranges,
depending on the selected measuring cell:
Measuring cell
Lower limit
AQC-D12
2.5 µA/ppm
•
Press [OK] to acknowledge the error message and to return to
the display level.
– The calibration data are imported.
The controller is operating in emergency mode!
Eliminate the fault, see section
Note
and calibrate again!
Upper limit
70.0 µA/ppm
11.5 Fault
finding,
15
Advertisement
Table of Contents
