GESTRA LRR 1-50, Installation & Operating Instructions Manual

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21
Commissioning procedure
Conductivity controller LRR 1-50: Setting switchpoints and parameters
– continued –
Setting the MAX switchpoint
Activity Function
Select parameter AL.HI, set the desired conductivity and
save the setting.
Adjust MAX limit between 1 and 9999 μS/cm or 1 and
5000 ppm.
Setting the setpoint
Select parameter SP, set the desired conductivity and
save the setting.
Adjust setpoint between 1 and 9999 μS/cm or 1 and
5000 ppm.
Setting the reset hysteresis
Select parameter HySt, set the required percentage
value and save the setting.
Adjust reset hysteresis between 1 and 25 % of the
setpoint
Conductivity electrode LRG 1.-..: Setting the correction factor
Select correction factor CF, set the required value and
save the setting.
Once the operating temperature is reached measure the
electrical conductivity of a water sample (at 25°C). Set
the correction factor (in increments) until the indicated
actual value agrees with the reference measured value.
As a result the conductivity readings will be adapted
to the specific conditions of the installation and any
deviations during operation will be compensated for.
Conductivity electrode LRG 1.-.. with separate resistance thermometer and LRG 16-9
Enable temperature compensation
Select setting inP and turn rotary button to the right.
The word "YES" appears. Save the setting.
Setting the temperature coefficient
Select temperature coefficient tC, set the required
percentage value and save the setting.
Once the operating temperature is reached measure
the electrical conductivity of a water sample (at 25°C).
Set the temperature coefficient (in increments) until
the indicated actual value agrees with the reference
measured value.
If required:
Select correction factor CF, set the required value and
save the setting.
During operation the indicated conductivity reading may
deviate from the reference value due to e. g. dirt deposits
or contamination. Change the correction factor (in incre-
ments) until the indicated actual value agrees with the
reference measured value.
Standardizing the current output
Select parameter Sout, set the desired conductivity and
save the setting.
Adjust current output between 1 and 9999 μS/cm
Setting the purging pulse and duration
Select parameter Si, set the desired time and save the
setting.
Adjust purging pulse between 0 and 24 hrs.
Select parameter Sd, set the desired time and save the
setting.
Adjust purging duration between 1 and 4 minutes.