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11.9 Calibration
1. Press [Cal] to switch to the calibration menu.
– The LED next to [Cal] illuminates.
2. Depending on the set access rights, it may be
necessary to enter the four-digit code number using
the [Up] and [Down] buttons. Confirm using [OK].
3. Select a parameter for the calibration.
In order to avoid an overdosing, the controllers are
switched off, and the final control elements are closed.
11.9.2 Calibrating the pH value
"Cal"
cal. meas.
pH
value
manual
temp.
cal result
cal. cycle
Fig. 36
Calibrating the pH value
44
11.9.1 Peculiarities for the calibration of chlorine
Caution
GRUNDFOS
temperature
DIN /
of buffer
NIST
solution
others
slope / asym. pot.
on
1-100 days
with pH compensation
pH calibration is of prime importance,
since during the calibration of the chlorine
value, the device uses the already
calibrated measured value for pH as a
reference value.
Therefore the pH value must be calibrated
first!
Only then calibrate the chlorine value!
buffer 1/2
automatic reading of
- measuring water
temperature
- measuring signal
and automatic
calibration
cal result:
slope /
asym. pot.
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