Page 13
Dulcodes UV-Desinfektionsanlage
4.3.7
Sensor Calibration
The UV-C sensor is calibrated at the factory and does not need recalibration.
4.3.8
Setting Trend Display Range
The recording time of the sensor signal for the trend display can be adjusted. The value (in days)
is interpreted as a time window and therefore guarantees a continuous display: After the selected
time has elapsed, the oldest value is deleted and the new value displayed.
Default
100 days
4.3.9
Setting Safety Threshold
Reliable water treatment is no longer ensured if the UV-C output decreases to such an extent that
the sensor signal drops below the safety threshold. In this case, the shut-off valve, if fitted, is
closed. This situation is indicated by two flashing arrows on the display.
A signalling device can be connected to the SAFETY THRESHOLD signalling relay of the control.
The relay is closed when the safety threshold is undershot.
WARNING!
After changing a UV lamp, check the safety and warning threshold and readjust if
necessary!
Adequate disinfection is ensured only when the safety threshold is set correctly.
IMPORTANT!
The safety threshold must be below the warning threshold. It is not possible to set this
threshold outside the warning threshold.
Observe the supplementary instructions for special applications, in which the sensor signal
is displayed in %!
Switch on the system with the Start/Stop key
Wait until the UV lamps develop their full power output, i.e. the UV-C sensor signal is stable
Read off the indicated UV-C intensity and note down
Switch off the system with the Start/Stop key
Set the safety threshold to 50 % of the read-off UV-C intensity
Example: Read UV-C intensity: 100 W/m
2
Therefore: Safety threshold = 100 W/m
2
0.50 = 50.0 W/m
2
Now set the warning threshold (see Section 4.3.10 “Setting Warning Threshold”).
Control
50.0 W/m
2
Safety
threshold
100 W/m
2
Cal. factor =
1.000
Time 5:00
Display range
Trend display
100 day(s)
BA_DS_009_10_06_GB.p65
20.10.2006, 7:31 Uhr
13
