Grundfos Conex DIS-D Instrucciones De Instalación Y Funcionamiento página 19

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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
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