GESTRA URB 60, Оригинальное руководство по установке и эксплуатации

Страница: 54 / 68

54 URB 60 - Installation & Operating Manual -
819699-00
1. Tap one of the following parameters:
Reference reading, correction factor, tempera-
ture coefficient, damping, or 100 % range.
2. The “Safety parameters” menu opens.
The current safety parameter values are
displayed.
3. Entry of safety parameters.
You can change the safety parameters within
the admissible limits.
After entry, the format of the value is con-
verted. It is then sent to the electrode, which
sends it back as a “Reference value”.
The “input” fields below are hidden to
prevent the wrong one being filled.
4. If the reference value is the same as the input
value, it is shown with a green background.
Input = reference value
Confirm the input value.
If there is a problem with transmission, a red
background is shown.
Input ≠ reference value
Reject the entered value
and enter a new one.
If you do not enter anything for 20
seconds, the window closes automati-
cally.
Configuring the conductivity controller
Setting safety parameters
Description of safety parameters:
■ ■
ReferenceReading (“Ref. meas. value”)
The reference reading is the conductivity
of the boiler water directly measured by the
boiler service technician.
Enter the measured reference reading here.
The correction factor is calculated automat-
ically (within its limits of 0.05 to 5.00 1/cm),
transmitted to the electrode and then copied
back to the “Reference value” field.
If the calculated correction factor is outside its
limits, the entered value is rejected.
■ ■
Correction factor
During operation, the indicated conductivity
may differ from the reference reading gained
from a reference measurement, e.g. due to
soiling.
In this case, change the correction factor
until the displayed “
Reading ” matches the
reference reading from the reference meas-
urement.
■ ■
TemperatureCoeff. (temperature coeffi-
cient) when service temperature has been
reached.
Proceed as described above for the correction
factor.
■ ■
Damping (“Attenuation”)
This parameter is used to settle the oscilla-
tions of the input signal.
■ ■
100 % range
Enter the maximum expected conductivity.