Grundfos Conex DIS-D Montage- Und Betriebsanleitung Seite 19

Measuring cell
3. Enter the existing measuring cell under code 31:
– Code 3100: AQC-D1/-D11 measuring cell
– Code 3101: AQC-D3/-D13 measuring cell
– Code 3102: AQC-D2/-D12 measuring cell.
4. Press [OK] to confirm.
Measuring range
5. Select the measuring range under code 32:
– Code 3200: measuring range, 0.00 to 2.00 mg/l
– Code 3201: measuring range, 0.0 to 20.0 mg/l
(Cl , ClO ) or 0.00 to 5.00 mg/l (O
2 2
6. Press [OK] to confirm.
9.6.3 Setting the sensor system;
®
Conex DIS-PR water sensor
1. Select code 40, and switch the water sensor on
or off.
– Code 4000: water sensor off
– Code 4001: water sensor on.
2. Press [OK] to confirm.
Alarm signal with low level of sample water code
*09*:
See section 10.2 Water sensor *09* / temperature
sensor *12*.
Measured parameter
1. Select code 41, and select the measured
parameter:
– Code 4100: pH measurement
– Code 4101: redox measurement.
2. Press [OK] to confirm.
Measuring range
1. Select the measuring range under code 42:
– Code 4200: measuring range, pH 0.00 to 14.00
– Code 4201: measuring range, pH 2.00 to 12.00
– Code 4202: measuring range, pH 5.00 to 9.00
– Code 4205: measuring range, redox 0 to 1500
mV
– Code 4206: measuring range redox 0 to 1000
mV
2. Press [OK] to confirm.
9.6.4 Temperature compensation; Conex
• A compensation function is used to numerically
cancel the temperature dependence of the
sensor.
• Automatic temperature compensation is only
possible if a temperature sensor (Pt100) is
connected.
• In the case of manual temperature
compensation, the temperature is entered
manually and automatically calculated in the
sensor gradient.
• Temperature compensation is not carried out for
).
3
redox values.
Activation of temperature compensation
1. Select code menu 43 and press [OK] to confirm.
– Use the [Up] or [Down] button to select code
4300 for manual temperature compensation or
code 4301 for automatic temperature
compensation. Press [OK] to confirm.
– Subsequently leave the code menu using Exit
and return to the display level.
Adjustment of temperature sensor
• If the actual resistance of the temperature sensor
(Pt100) is changed by the cable length,
compensate for the change using an offset
function.
– Select code menu 45.
– Measure the reference temperature, e.g. using
a calibrated thermometer, and enter in °C using
the [Up] or [Down] button.
• The offset is calculated automatically.
• The temperature in °C can be read at any time in
the code menu 53.
9.6.5 Calibration for chlorine, chlorine dioxide or
ozone; Conex
Note
1. Press [Cal] to select the calibration menu.
The Cal LED next to the [Cal] button illuminates.
– To prevent overdosing, the controllers are to be
switched off and the actuators closed.
– After selection of the calibration function with
the [Cal] button, the measured-value display
initially appears with the current measured
value.
2. Use the [Up] or [Down] button to select the
photometrically or analytically determined
reference value (for instance measured
photometrically using DIT).
®
DIS-D
The calibration value is saved even during
power off (failure). To check the current
calibration value use code 51.
®
DIS-PR
19