HygroMatik WL-ROL 160-1200 Series, Manual

Page: 46 / 76

Page 46
11.6 Setting options at service
level
The following chapter is only intended for cer-
tified service staff. The password for reaching
the service level can be found in the addi-
tional information provided with the unit.
HygroMatik is not liable for damages caused
by incorrect parameter settings at this level.
The parameters have already been config-
ured ex works and may only be changed
with the appropriate expertise.
The contact configuration is preset in all
submenus. Do not change this carelessly!
Otherwise there is a risk of damage to the
system.
11.6.1 Conductivity sensors
The HygroMatik RO units WL-ROC 25-80 are
equipped with one conductivity sensor (per-
meate).
The WL-ROL units (and WL-ROC-140 with
blending kit) are equipped with two conduc-
tivity sensors. One sensor measures the con-
ductivity of the feed water (ROH/ MIX), the
other sensor that of the permeate. Both con-
ductivity sensors are pre-calibrated ex works.
In the case of recalibration during maintenance,
the calibration can be carried out either with the
a help of a buffer solution with known conductiv-
ity, or with a conductivity tester according to the
principle of comparative measurement.
When selecting the calibration liquid (not
included in the scope of delivery), please
note the selected measuring range:
• Note that this conductivity measure-
ment is not temperature-compensated.
• To achieve a high measuring precision
it is therefore recommended that the
calibration liquid (or the water sample
for the comparison measurement) has
approximately the same conductivity
and temperature as the permeate to be
measured.
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2 KAL. PERMEAT
3 GRENZW. PERMEAT
1 CAL. ROH- / MIX
2 CAL. PERMEATE